WO2018119718A1 - Image extraction method and device in ultrasonic scanning, and ultrasonic imaging system - Google Patents

Image extraction method and device in ultrasonic scanning, and ultrasonic imaging system Download PDF

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Publication number
WO2018119718A1
WO2018119718A1 PCT/CN2016/112544 CN2016112544W WO2018119718A1 WO 2018119718 A1 WO2018119718 A1 WO 2018119718A1 CN 2016112544 W CN2016112544 W CN 2016112544W WO 2018119718 A1 WO2018119718 A1 WO 2018119718A1
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image
ultrasound
ultrasound image
frame
library
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PCT/CN2016/112544
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French (fr)
Chinese (zh)
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沈莹莹
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深圳迈瑞生物医疗电子股份有限公司
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Priority to CN201680083788.4A priority Critical patent/CN108778139A/en
Priority to PCT/CN2016/112544 priority patent/WO2018119718A1/en
Publication of WO2018119718A1 publication Critical patent/WO2018119718A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves

Definitions

  • the present invention relates to the field of medical technology, and in particular, to an image extraction method, apparatus, and ultrasound imaging system in ultrasonic scanning.
  • Ultrasonic instruments can be used to help ultrasound instrument users (such as doctors) to obtain non-intuitive internal information. During the observation process, doctors often need to pause to see the new findings. At present, ultrasonic instruments on the market require doctors to manually search through frames and frames in order to retrieve accurate and clear ultrasound images. In this way, for a doctor who needs a lot of inspections a day and a large number of anatomical locations, there is no doubt that the workload is very large and even exceeds its load.
  • the invention provides an image extraction method and device in an ultrasonic scan and an ultrasonic imaging system, which can quickly identify a desired frame ultrasound image in an ultrasound picture, can reduce the workload of the user, and improve work efficiency.
  • an image extraction method in an ultrasonic scan comprising the steps of:
  • the ultrasound image or movie file is output.
  • an image extracting apparatus in an ultrasonic scan which comprises:
  • a triggering unit configured to obtain a time point of triggering image position selection in the continuously acquired ultrasound image
  • the ultrasound image library generating unit is configured to acquire, according to the time point, a multi-frame ultrasound image continuously acquired on a predetermined time period associated with the time point to form a to-be-selected ultrasound image library;
  • An image evaluation unit configured to perform image evaluation on the ultrasound image in the to-be-selected ultrasound image library, to obtain an ultrasound image or a movie file that meets an image evaluation standard
  • An output unit for outputting the ultrasound image or movie file.
  • an image extraction system in an ultrasound scan which includes:
  • a transmitting circuit and a receiving circuit configured to excite the probe to emit an ultrasonic beam to the tissue target, and receive an echo of the ultrasonic beam to obtain an echo signal
  • an image processing module configured to generate an ultrasound image according to the echo signal, obtain a time point of triggering image position selection in the continuously acquired ultrasound image, and acquire a predetermined schedule associated with the time point according to the time point
  • the multi-frame ultrasound image continuously acquired in the time period forms an ultrasound image library to be selected, and performs image evaluation on the ultrasound image in the ultrasound image library to be selected to obtain an ultrasound image or a movie file that satisfies the image evaluation standard;
  • a display for displaying the ultrasound image or movie file and outputting.
  • FIG. 1 is a schematic structural view of an ultrasonic imaging apparatus provided by the present invention.
  • FIG. 2 is a schematic flow chart of an embodiment of an image extraction method in an ultrasonic scan according to the present invention
  • FIG. 3 is a schematic structural diagram of an embodiment of an image extracting apparatus in an ultrasonic scan according to the present invention
  • FIG. 4 is a schematic structural view of an embodiment of the image evaluation unit of FIG. 3;
  • FIG. 5 is a block diagram showing another embodiment of the image evaluation unit of Figure 3.
  • FIG. 1 provides a schematic structural diagram of a system of an ultrasound image acquisition device.
  • the apparatus includes a probe 20, a transmitting circuit 2, a transmit/receive selection switch 3, a receiving circuit 4, a beam combining module 5, a signal processing module 6, an image processing module 7, and a display 8.
  • the transmitting circuit 2 transmits the delayed-focused ultrasonic pulse having a certain amplitude and polarity to the probe 20 through the transmitting/receiving selection switch 3.
  • the probe 20 is excited by the ultrasonic pulse to transmit ultrasonic waves to a target area (not shown in the figure, such as cardiac tissue) of the body to be tested, and receive ultrasonic echoes with tissue information reflected from the target area after a certain delay.
  • the receiving circuit 4 receives the electrical signals generated by the conversion of the probe 20, obtains ultrasonic echo signals, and sends the ultrasonic echo signals to the beam combining module 5.
  • the beam combining module 5 performs focus delay on the ultrasonic echo signal and adds The weight and channel summation and the like are processed, and then the ultrasonic echo signal is sent to the signal processing module 6 for related signal processing.
  • the ultrasonic echo signals processed by the signal processing module 6 are sent to the image processing module 7.
  • the image processing module 7 performs different processing on the signals according to different imaging modes required by the user, obtains image data of different modes, and then forms ultrasonic images of different modes by logarithmic compression, dynamic range adjustment, digital scan conversion, etc., such as B image, C image, D image, and the like.
  • the ultrasound image generated by the image processing module 7 is sent to the display 8 for display.
  • an ultrasound image of systolic end-systolic and end-diastolic phases can be simultaneously displayed on the display interface, and the endocardial contour can be outlined on the ultrasound image.
  • the ultrasound images of the systolic end-systolic and end-diastolic phases for simultaneous display may be standard ultrasound section images (eg, apical two-chamber heart, apical four-chamber heart, etc.), or ultrasound section images corresponding to any section selected by the user.
  • the system shown in FIG. 1 further includes an operation control module 9.
  • the device user can input a control command on the display interface by operating the control module 9, for example, triggering image position selection, and selecting an operation instruction such as a final final output ultrasonic image.
  • the operation control module 9 may include a control panel such as a keyboard or a mouse.
  • an image extraction method, apparatus, and ultrasound imaging system in ultrasonic scanning are provided. Can reduce the user's workload and improve work efficiency.
  • FIG. 2 is a schematic flowchart diagram of an embodiment of an image extraction method in an ultrasound scan according to an embodiment of the present invention. It can be understood that how to determine a desired frame in an ultrasound image generally considers two factors: whether the image slice is Accurate and clear whether the picture is, it is usually expected that the frame contains the frame with the most accurate image and/or the clearest picture. In one embodiment, the two conditions can be combined to find a higher definition picture within the range of the ultrasound image that satisfies the accuracy of the image slice, thereby confirming the desired frame ultrasound image or movie file therein. Specifically, the method includes the following steps:
  • Step S10 transmitting an ultrasonic beam to the tissue target through the ultrasonic probe
  • Step S11 receiving an echo of the ultrasonic beam through the probe to obtain an echo signal
  • Step S12 generating an ultrasound image according to the echo signal and storing it;
  • step S13 the image processing module obtains a time point for triggering image position selection in the continuously acquired ultrasound image; the step is specifically:
  • the image processing module selects one frame in the continuously acquired ultrasound image, and uses the position time corresponding to the selected frame as the time point.
  • the user can input an instruction related to image saving or freezing by operating a freeze key or a storage key on the operation control module 9, and the image processing module determines the time point according to the instruction.
  • the storage keys here include commonly used video recording commands, single-frame image saving instructions, and the like.
  • the operation of the user mentioned may be a button operation after the doctor observes the target information
  • connection acquisition refers to completing an ultrasonic scan description process, which may include multiple scan cycles.
  • the scan period herein may include a period of motion formed in accordance with the motion of an anatomical structure, such as a cardiac cycle with respect to cardiac motion.
  • step S14 the image processing module acquires the multi-frame ultrasound image continuously acquired in the predetermined time period associated with the time point according to the time point to form the to-be-selected ultrasound image library; specifically, the image processing module may include at least one of the following:
  • a plurality of frames of ultrasound images continuously acquired over a predetermined period of time including the above-mentioned time points are selected to form a library of ultrasound images to be selected.
  • the image slice acquisition data before, after, or before and after the operation is determined to be accurate.
  • the fixed period of time may be 1 second, 2 seconds, 3 seconds, etc., but it may not be a long time, for example, the time when the doctor moves the probe to another position for scanning.
  • step S15 the image processing module performs image evaluation on the ultrasound image in the selected ultrasound image library to obtain an ultrasound image or a movie file that satisfies the image evaluation standard.
  • the image evaluation standard refers to the two criteria of the face matching degree and the image sharpness in the following step S15, and can also make a multi-level judgment.
  • the standard is used as the basis for the judgement.
  • step S15 one or more frames of non-continuous ultrasound images satisfying the image evaluation criteria can be obtained in one embodiment, and in other embodiments, a movie file (multi-frame continuous ultrasound images can be obtained).
  • a movie file multi-frame continuous ultrasound images can be obtained.
  • the step S15 includes: including at least one of the following steps S150 and S151:
  • Step S150 Comparing the ultrasound image in the to-be-selected ultrasound image library with a standard slice, performing image face matching degree determination, and obtaining a multi-frame ultrasound image in the candidate ultrasound image library that satisfies the face matching degree determination criterion.
  • the image slice matching degree determination is specifically: comparing all the ultrasound images in the candidate ultrasound image library with the pre-stored standard slice model images to obtain a multi-frame ultrasound image in which the aspect matching degree is satisfied.
  • the capacity of the ultrasound image library to be selected may be determined according to the characteristics of different examination sites and the appropriate predetermined duration.
  • the first few images that meet the matching feature of the facet can be selected to enter the definition candidate list;
  • the standard cut surface template matching process may not be required, and the image in the ultrasonic image library to be selected is directly used as the ultrasonic image satisfying the matching degree of the facet.
  • the difference in profile position is similar for a large period of time observed. That is, for the ultrasound images of these parts, most of the pictures in the pre-time period satisfy the index of the aspect matching.
  • Step S151 Perform image sharpness determination on the ultrasound image in the to-be-selected ultrasound image library, and obtain one or more frames of ultrasound images in the candidate ultrasound image library that satisfy the image clarity determination criterion.
  • the image sharpness determining step includes at least one of the following:
  • a threshold may be preset, and when the difference of the speed of the continuous picture exceeds the threshold, the position is determined to be a clear and fuzzy interface;
  • a plurality of reference indicators such as sound velocity calculation, correlation coefficient analysis, histogram matching, image average gray value, and the like are employed in step S152 of the present embodiment.
  • the resolution of the picture is quantized as a result of continuous stability of the picture sound speed, large front and rear frame correlation coefficient values, continuous histogram statistical results, appropriate image average gray value, and the like, or a combination of single or multiple indicators.
  • the step S15 may generate a movie file, which specifically includes the following steps:
  • a corresponding continuous multi-frame image in one scan period that satisfies the evaluation criteria is extracted, a movie file is formed, and stored.
  • the following method can be adopted to determine a scan period that satisfies the evaluation criteria:
  • Finding a first criterion for satisfying image sharpness and aspect matching degree in a plurality of consecutive sampling single frame images determining a scanning period in which the consecutive plurality of sampling single frame images are located as one scanning period satisfying an evaluation criterion;
  • the scan period in which the sampled single frame image is located is determined as one scan period that satisfies the evaluation criteria
  • a second criterion for finding that a plurality of sampled single-frame images satisfy the image sharpness and the aspect matching degree in one scan period is determined, and the scan period is determined as one scan period that satisfies the evaluation criteria.
  • the scan period is determined as one scan period that satisfies the evaluation criteria.
  • the second judging criterion is second only to the first judging criterion in terms of image sharpness and aspect matching degree.
  • the first judging criterion may be used to determine a single desired frame from the to-be-selected ultrasound image library.
  • a plurality of desired frames, such as movie files, may also be determined from the candidate ultrasound image library in conjunction with the first criterion and the second criterion.
  • step S16 the ultrasound image or movie file is output.
  • the step S16 further includes:
  • the ultrasonic image whose resolution meets the requirement is one frame, it is directly displayed and output through the display;
  • the micro-image of the multi-frame ultrasound image may be displayed by using a display, and the image processing module prompts the user to select on the display interface, and determines one frame according to the user's selection.
  • the frame image is expected to be output; when it is determined to be a movie file, the movie file is output.
  • the embodiment provides an image extraction method, device and ultrasound imaging system in ultrasonic scanning System.
  • the process of determining the desired frame is triggered by the user to form a library of the selected ultrasound images in the predetermined time period, and the image matching degree determination and the definition recognition are performed on all the ultrasound images in the selected ultrasound image library, so that the desired image can be quickly located. Frame position.
  • FIG. 3 is a schematic structural diagram of an embodiment of an image extracting apparatus in an ultrasonic scanning according to an embodiment of the present invention.
  • the image extracting apparatus 1 in the ultrasonic scanning includes:
  • the triggering unit 10 is configured to obtain a time point of triggering image position selection in the continuously acquired ultrasound image
  • the to-be-selected ultrasound image library generating unit 11 is configured to acquire, according to the time point, a multi-frame ultrasound image continuously acquired on a predetermined time period associated with the time point to form a to-be-selected ultrasound image library;
  • the image evaluation unit 12 is configured to perform image evaluation on the ultrasound image in the to-be-selected ultrasound image library to obtain an ultrasound image or a movie file that meets the image evaluation criteria;
  • the output unit 14 is configured to output the ultrasound image or movie file.
  • the to-be-selected ultrasound image library generating unit 11 specifically forms the to-be-selected ultrasound image library in one of the following ways:
  • a plurality of frames of ultrasound images continuously acquired over a predetermined period of time including the point in time are selected to form a library of ultrasound images to be selected.
  • the image evaluation unit 12 further comprises:
  • the cut surface determining unit 121 is configured to compare the ultrasonic image in the to-be-selected ultrasonic image library with a standard cut surface, perform image cut surface matching degree determination, and obtain a multi-frame ultrasonic image that satisfies the criterion of the matching degree of the matching surface in the selected ultrasonic image database. ;
  • the definition determining unit 122 is configured to perform resolution recognition on the ultrasound image in the to-be-selected ultrasound image library, and obtain one or more frames of ultrasound images in the image clarity determination standard in the candidate ultrasound image library.
  • the section determining unit 121 specifically compares all the ultrasound images in the candidate ultrasound image library with the pre-stored standard section model pictures to obtain a multi-frame ultrasound image in which the aspect matching degree is satisfied.
  • the sharpness judging unit 122 realizes the sharpness judgment by at least one of the following:
  • the display output unit 14 performs display output in one of the following manners:
  • the thumbnail of the multi-frame ultrasound image is displayed, prompting the user to select, and determining one of the frames as the desired frame image according to the user's selection and outputting.
  • the image evaluation unit 12 further includes:
  • Sampling unit 120 for a predetermined time of more than one scan period from the library of ultrasound images to be selected Sampling in consecutive multi-frame images of segments to obtain multiple single-frame images;
  • the slice determining unit 121 is configured to compare the ultrasonic image in the to-be-selected ultrasound image library with a standard slice, and perform image face matching degree determination;
  • the definition determining unit 122 is configured to perform sharpness recognition on the ultrasound image in the to-be-selected ultrasound image library
  • the extracting unit 123 is configured to extract consecutive consecutive multi-frame images in one scanning period that meet the image evaluation standard, form a movie file, and store the file.
  • the extracting unit 123 determines one scanning period that satisfies the evaluation criteria by the following method:
  • Finding a first criterion for satisfying image sharpness and aspect matching degree in a plurality of consecutive sampling single frame images determining a scanning period in which the consecutive plurality of sampling single frame images are located as one scanning period satisfying an evaluation criterion;
  • a second criterion for finding that a plurality of sampled single-frame images satisfy the image sharpness and the aspect matching degree in one scan period is determined, and the scan period is determined as one scan period that satisfies the evaluation criteria. For details, refer to the related description of step S15 above.
  • the functions of the slice determining unit 121 and the definition determining unit 122 can be referred to the foregoing description of FIG. 4.
  • an image extraction system in ultrasonic scanning which includes:
  • a transmitting circuit and a receiving circuit configured to excite the probe to emit an ultrasonic beam to the tissue target, and receive an echo of the ultrasonic beam to obtain an echo signal
  • An image processing module configured to generate an ultrasound image according to the echo signal, and store In the continuously acquired ultrasound image, a time point for triggering the image position selection is obtained, and according to the time point, the multi-frame ultrasound image continuously acquired on the predetermined time period associated with the time point is acquired, and the ultrasound image library to be selected is formed. Performing image evaluation on the ultrasound image in the to-be-selected ultrasound image library to obtain an ultrasound image or a movie file that satisfies the image evaluation criteria;
  • a display for displaying the ultrasound image or movie file and outputting.
  • the image processing module performs the various steps in FIG. 2, which specifically includes the functional modules of the image extracting apparatus in the ultrasonic scanning of FIG. 3 to FIG. 5, and the detailed description of each step process may be omitted. See the description of the relevant content above.
  • the image processing module mentioned herein may be constructed by one processor or multiple processors.
  • the image processing module obtains a point in time by:
  • one frame is selected in the continuously acquired ultrasound images, and the position time corresponding to the selected frame is taken as the time point.
  • the image processing module obtains a library of ultrasound images to be selected by:
  • a plurality of frames of ultrasound images continuously acquired before or/or after the time point are selected to form a library of ultrasound images to be selected.
  • the image processing module obtains a multi-frame ultrasound image that satisfies the aspect matching degree by:
  • the image processing module obtains one or more frames of ultrasound images whose resolution meets the requirements by at least one of the following:
  • the display is displayed in one of the following ways:
  • a thumbnail of the multi-frame ultrasound image is displayed, prompting the user to select, and determining one of the frames as the desired frame ultrasound image according to the user's selection and outputting.
  • this embodiment has obvious advantages in some application scenarios. For example, in a scene, when the user presses the freeze button or the store button during the process of ultrasonic acquisition of the image, the system recognizes that pressing the freeze button or the store button determines that the image provided for the freeze is presented on the display, but now In some conventional methods, if the user's hand is displaced at this time, the probe will shift, and the image presented on the display will not be the image that the user expects when pressing the freeze button or the storage button. Turning back the image, and using the method provided in this embodiment, after pressing the freeze button or the storage button, the image presented on the display is performed by performing the process of face matching degree judgment and image sharpness determination regardless of whether the probe is displaced or not. It will be closer to the image that the user expects (the desired frame image).
  • the conventional method of storing a movie file in the conventional method is: when the user determines the scanning position and the cutting position according to the display during the scanning process, press the recording button to start recording the movie, and if the probe shifts during the process. , then the image in the movie will also be off-track, then you need to re-record, and after using the method of this embodiment, when you start to press the record button, Recording a movie associated with a period of time near this point in time, and then extracting the desired movie file to the user after evaluation, whether the probe moves or not will not affect the quality of the movie file.
  • the embodiment provides an image extraction method, device and ultrasonic imaging system in ultrasonic scanning.
  • the process of determining the desired frame ultrasound image is triggered by the user, and the ultrasound image library to be selected within a predetermined time period is formed according to the motion characteristics of different examination parts of the human body, and the image matching degree of the ultrasound image in the selected ultrasound image library is determined or / and image sharpness judgment to eliminate blurred images caused by operation or tissue movement, can quickly locate the position of the desired frame ultrasound image.
  • the humanized design of the ultrasonic instrument can be realized, and the efficiency of the ultrasonic instrument user to obtain the required ultrasonic picture is improved.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Abstract

Disclosed in the present invention is an image extraction method in ultrasonic scanning. The method comprises the steps of: obtaining a time point for triggering image position selection in continuously collected ultrasonic images; obtaining, according to the time point, multiple frames of ultrasonic images continuously collected in a preset time period associated with the time point, so as to form a library of ultrasonic images to be selected; determining image section matching degrees of all ultrasonic images in the library of ultrasonic images to be selected, so as to obtain multiple frames of ultrasonic images therein satisfying a section matching degree; recognizing definitions of the multiple frames of ultrasonic images satisfying the section matching degree, so as to obtain one or more frames of ultrasonic images satisfying a definition requirement; and displaying and outputting the one or more frames of ultrasonic images satisfying the definition requirement. Also disclosed in the present invention are a corresponding device and an ultrasonic imaging system. The workload of a user can be reduced, and the work efficiency can be improved.

Description

在超声扫描中的图像提取方法、装置及超声成像***Image extraction method, device and ultrasonic imaging system in ultrasonic scanning 技术领域Technical field
本发明涉及医疗技术领域，尤其涉及一种在超声扫描中的图像提取方法、装置及超声成像***。The present invention relates to the field of medical technology, and in particular, to an image extraction method, apparatus, and ultrasound imaging system in ultrasonic scanning.
背景技术Background technique
医用超声技术以其无辐射、无创伤、检查简便易行、价格低廉等特点在临床中得到广泛应用，超声仪器的人性化设计越来越成为激烈的市场竞争中吸引用户的重要因素。Medical ultrasound technology has been widely used in clinical practice because of its characteristics of no radiation, no trauma, simple and easy to check, and low price. The humanized design of ultrasonic instruments has become an important factor in attracting users in the fierce market competition.
利用超声仪器，可以帮助超声仪器使用者(如医生)获取人体非直观的内部信息。在观察过程中，医生常常需要暂停下来查看新发现。目前市场上的超声仪器，均需要医生手动去一帧一帧逐步查找、以期检索到切面准确且清晰的超声图像。这样，对于一天需要进行大量检查、以及查看大量解剖位置的医生来说，无疑工作量非常大，甚至超出其负荷。Ultrasonic instruments can be used to help ultrasound instrument users (such as doctors) to obtain non-intuitive internal information. During the observation process, doctors often need to pause to see the new findings. At present, ultrasonic instruments on the market require doctors to manually search through frames and frames in order to retrieve accurate and clear ultrasound images. In this way, for a doctor who needs a lot of inspections a day and a large number of anatomical locations, there is no doubt that the workload is very large and even exceeds its load.
针对这一现状，有必要提供一种可以快速确定超声图像中期望帧(最佳帧)超声图像的方法以协助超声仪器使用者(如医生)快速找到想看的信息。In view of this situation, it is necessary to provide a method for quickly determining a desired frame (optimal frame) ultrasound image in an ultrasound image to assist an ultrasound instrument user (such as a doctor) to quickly find the information that he or she wants to see.
发明内容Summary of the invention
本发明提供了一种在超声扫描中的图像提取方法、装置以及超声成像***，可以快速识别出超声图片中的期望帧超声图像，可以降低用户的工作量，并提高工作效率。The invention provides an image extraction method and device in an ultrasonic scan and an ultrasonic imaging system, which can quickly identify a desired frame ultrasound image in an ultrasound picture, can reduce the workload of the user, and improve work efficiency.
作为本发明的一方面，提供了一种在超声扫描中的图像提取方法，其中，包括步骤：As an aspect of the present invention, there is provided an image extraction method in an ultrasonic scan, comprising the steps of:
通过超声探头向组织目标发射超声波束；Transmitting an ultrasonic beam to the tissue target through the ultrasonic probe;
接收超声波束的回波，获得回波信号；Receiving an echo of the ultrasonic beam to obtain an echo signal;
根据所述回波信号，生成超声图像；Generating an ultrasound image based on the echo signal;
在连续采集的超声图像中，获得触发图像位置选择的时间点； In the continuously acquired ultrasound image, a time point at which the trigger image position selection is obtained is obtained;
根据所述时间点，获取与所述时间点相关联的预定时间段上采集的多帧超声图像，形成待选超声图像库；Obtaining, according to the time point, a multi-frame ultrasound image acquired on a predetermined time period associated with the time point to form a to-be-selected ultrasound image library;
对所述待选超声图像库中的超声图像进行图像评估，获得满足图像评估标准的超声图像或电影文件；Performing image evaluation on the ultrasound image in the to-be-selected ultrasound image library to obtain an ultrasound image or a movie file that satisfies the image evaluation criteria;
输出所述超声图像或电影文件。The ultrasound image or movie file is output.
相应地，作为本发明的另一方面，提供了一种在超声扫描中的图像提取装置，其中，包括：Accordingly, as another aspect of the present invention, an image extracting apparatus in an ultrasonic scan is provided, which comprises:
触发单元，用于在连续采集的超声图像中，获得触发图像位置选择的时间点；a triggering unit, configured to obtain a time point of triggering image position selection in the continuously acquired ultrasound image;
待选超声图像库生成单元，用于根据所述时间点，获取与所述时间点相关联的预定时间段上连续采集的多帧超声图像，形成待选超声图像库；The ultrasound image library generating unit is configured to acquire, according to the time point, a multi-frame ultrasound image continuously acquired on a predetermined time period associated with the time point to form a to-be-selected ultrasound image library;
图像评估单元，用于对所述待选超声图像库中的超声图像进行图像评估，获得满足图像评估标准的超声图像或电影文件；An image evaluation unit, configured to perform image evaluation on the ultrasound image in the to-be-selected ultrasound image library, to obtain an ultrasound image or a movie file that meets an image evaluation standard;
输出单元，用于输出所述超声图像或电影文件。An output unit for outputting the ultrasound image or movie file.
相应地，作为本发明的再一方面，提供了一种在超声扫描中的图像提取***，其中，包括：Accordingly, as a further aspect of the present invention, an image extraction system in an ultrasound scan is provided, which includes:
探头；Probe
发射电路和接收电路，用于激励所述探头向组织目标发射超声波束，并接收所述超声波束的回波，获得回波信号；a transmitting circuit and a receiving circuit, configured to excite the probe to emit an ultrasonic beam to the tissue target, and receive an echo of the ultrasonic beam to obtain an echo signal;
图像处理模块，用于根据所述回波信号，生成超声图像，在连续采集的超声图像中，获得触发图像位置选择的时间点，根据所述时间点，获取与所述时间点相关联的预定时间段上连续采集的多帧超声图像，形成待选超声图像库，对所述待选超声图像库中超声图像进行图像评估，获得满足图像评估标准的超声图像或电影文件；And an image processing module, configured to generate an ultrasound image according to the echo signal, obtain a time point of triggering image position selection in the continuously acquired ultrasound image, and acquire a predetermined schedule associated with the time point according to the time point The multi-frame ultrasound image continuously acquired in the time period forms an ultrasound image library to be selected, and performs image evaluation on the ultrasound image in the ultrasound image library to be selected to obtain an ultrasound image or a movie file that satisfies the image evaluation standard;
显示器，用于显示所述超声图像或电影文件并输出。a display for displaying the ultrasound image or movie file and outputting.
附图说明 DRAWINGS
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.
图1为本发明提供的一种超声成像设备的结构示意图；1 is a schematic structural view of an ultrasonic imaging apparatus provided by the present invention;
图2为本发明提供的一种在超声扫描中的图像提取方法的一个实施例流程示意图；2 is a schematic flow chart of an embodiment of an image extraction method in an ultrasonic scan according to the present invention;
图3为本发明提供的一种在超声扫描中的图像提取装置的一个实施例的结构示意图；FIG. 3 is a schematic structural diagram of an embodiment of an image extracting apparatus in an ultrasonic scan according to the present invention; FIG.
图4是图3中图像评估单元的一个实施例的结构示意图；4 is a schematic structural view of an embodiment of the image evaluation unit of FIG. 3;
图5是图3中图像评估单元的另一个实施例的结构示意图。Figure 5 is a block diagram showing another embodiment of the image evaluation unit of Figure 3.
具体实施方式detailed description
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
下面参考附图对本发明的优选实施例进行描述。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
图1提供了一种超声图像采集设备的***结构示意图。所述装置包括：探头20、发射电路2、发射/接收选择开关3、接收电路4、波束合成模块5、信号处理模块6、图像处理模块7和显示器8。其中，发射电路2将经过延迟聚焦的具有一定幅度和极性的超声脉冲通过发射/接收选择开关3发送到探头20。探头20受超声脉冲的激励，向受测机体组织的目标区域(图中未示出，例如心脏组织)发射超声波，经一定延时后接收从目标区域反射回来的带有组织信息的超声回波，并将此超声回波重新转换为电信号。接收电路4接收探头20转换生成的电信号，获得超声回波信号，并将这些超声回波信号送入波束合成模块5。波束合成模块5对超声回波信号进行聚焦延时、加 权和通道求和等处理，然后将超声回波信号送入信号处理模块6进行相关的信号处理。经过信号处理模块6处理的超声回波信号送入图像处理模块7。图像处理模块7根据用户所需成像模式的不同，对信号进行不同的处理，获得不同模式的图像数据，然后经对数压缩、动态范围调整、数字扫描变换等处理形成不同模式的超声图像，如B图像，C图像，D图像等等。图像处理模块7生成的超声图像送入显示器8进行显示，例如，在显示界面上可以同步显示心室收缩末期和舒张末期的超声图像，并且在超声图像上可以勾勒心内膜轮廓。对于同步显示的心室收缩末期和舒张末期的超声图像可以是标准的超声切面图像(如心尖两腔心、心尖四腔心等)，或者是用户选择的任意切面所对应的超声切面图像。FIG. 1 provides a schematic structural diagram of a system of an ultrasound image acquisition device. The apparatus includes a probe 20, a transmitting circuit 2, a transmit/receive selection switch 3, a receiving circuit 4, a beam combining module 5, a signal processing module 6, an image processing module 7, and a display 8. Among them, the transmitting circuit 2 transmits the delayed-focused ultrasonic pulse having a certain amplitude and polarity to the probe 20 through the transmitting/receiving selection switch 3. The probe 20 is excited by the ultrasonic pulse to transmit ultrasonic waves to a target area (not shown in the figure, such as cardiac tissue) of the body to be tested, and receive ultrasonic echoes with tissue information reflected from the target area after a certain delay. And re-convert this ultrasonic echo into an electrical signal. The receiving circuit 4 receives the electrical signals generated by the conversion of the probe 20, obtains ultrasonic echo signals, and sends the ultrasonic echo signals to the beam combining module 5. The beam combining module 5 performs focus delay on the ultrasonic echo signal and adds The weight and channel summation and the like are processed, and then the ultrasonic echo signal is sent to the signal processing module 6 for related signal processing. The ultrasonic echo signals processed by the signal processing module 6 are sent to the image processing module 7. The image processing module 7 performs different processing on the signals according to different imaging modes required by the user, obtains image data of different modes, and then forms ultrasonic images of different modes by logarithmic compression, dynamic range adjustment, digital scan conversion, etc., such as B image, C image, D image, and the like. The ultrasound image generated by the image processing module 7 is sent to the display 8 for display. For example, an ultrasound image of systolic end-systolic and end-diastolic phases can be simultaneously displayed on the display interface, and the endocardial contour can be outlined on the ultrasound image. The ultrasound images of the systolic end-systolic and end-diastolic phases for simultaneous display may be standard ultrasound section images (eg, apical two-chamber heart, apical four-chamber heart, etc.), or ultrasound section images corresponding to any section selected by the user.
此外，图1所示的***中还包括操作控制模块9，设备使用者通过操作控制模块9可在显示界面上输入控制命令，例如触发图像位置选择，选择最终的最终输出的超声图像等操作指令。操作控制模块9可以包括键盘、鼠标等控制面板。In addition, the system shown in FIG. 1 further includes an operation control module 9. The device user can input a control command on the display interface by operating the control module 9, for example, triggering image position selection, and selecting an operation instruction such as a final final output ultrasonic image. . The operation control module 9 may include a control panel such as a keyboard or a mouse.
基于上述***结构，在本实施例中提供了一种在超声扫描中的图像提取方法、装置及超声成像***。可以降低用户的工作量，并提高工作效率。Based on the above system structure, in the present embodiment, an image extraction method, apparatus, and ultrasound imaging system in ultrasonic scanning are provided. Can reduce the user's workload and improve work efficiency.
图2为本实施例提供的一种在超声扫描中的图像提取方法的一个实施例的流程示意图，可以理解的是，如何在超声图像中确定期望帧，一般主要考虑两个因素：图像切面是否准确以及图片是否清晰，通常期望帧包含图像切面最准确和/或图片最清晰的帧。在一个实施例可以将这两个条件结合起来，在满足图像切面准确度的超声图像的范围内再寻找清晰度较高的图片，从而确认其中的期望帧超声图像或电影文件。具体地，该方法包括如下步骤：FIG. 2 is a schematic flowchart diagram of an embodiment of an image extraction method in an ultrasound scan according to an embodiment of the present invention. It can be understood that how to determine a desired frame in an ultrasound image generally considers two factors: whether the image slice is Accurate and clear whether the picture is, it is usually expected that the frame contains the frame with the most accurate image and/or the clearest picture. In one embodiment, the two conditions can be combined to find a higher definition picture within the range of the ultrasound image that satisfies the accuracy of the image slice, thereby confirming the desired frame ultrasound image or movie file therein. Specifically, the method includes the following steps:
步骤S10，通过超声探头向组织目标发射超声波束；Step S10, transmitting an ultrasonic beam to the tissue target through the ultrasonic probe;
步骤S11，通过探头接收超声波束的回波，获得回波信号；Step S11, receiving an echo of the ultrasonic beam through the probe to obtain an echo signal;
步骤S12，根据所述回波信号，生成超声图像并存储；Step S12, generating an ultrasound image according to the echo signal and storing it;
步骤S13，图像处理模块在连续采集的超声图像中，获得触发图像位置选择的时间点；该步骤具体为： In step S13, the image processing module obtains a time point for triggering image position selection in the continuously acquired ultrasound image; the step is specifically:
根据用户点击冻结键或者存储键的操作，图像处理模块在所述连续采集的超声图像中选择一帧，以所选择的帧对应的位置时间作为上述时间点。用户可以通过操作操作控制模块9上的冻结键或者存储键输入相关指令，启动有关图像保存或者冻结的指令，图像处理模块根据该指令确定上述时间点。这里的存储键包括常用的视频录制命令、单帧图像保存指令等等。According to the operation of the user clicking the freeze key or the storage key, the image processing module selects one frame in the continuously acquired ultrasound image, and uses the position time corresponding to the selected frame as the time point. The user can input an instruction related to image saving or freezing by operating a freeze key or a storage key on the operation control module 9, and the image processing module determines the time point according to the instruction. The storage keys here include commonly used video recording commands, single-frame image saving instructions, and the like.
其中，在一个实施例中，所提及的用户的操作，可以是诸如医生观察到目标信息后的按键操作；Wherein, in one embodiment, the operation of the user mentioned may be a button operation after the doctor observes the target information;
其中的连接采集指完成一次超声扫描述程，可以包括多个扫描周期。这里的扫描周期可以包括依据一个解剖结构的运动而形成的运动周期，例如关于心脏运动的心动周期。The connection acquisition refers to completing an ultrasonic scan description process, which may include multiple scan cycles. The scan period herein may include a period of motion formed in accordance with the motion of an anatomical structure, such as a cardiac cycle with respect to cardiac motion.
步骤S14，图像处理模块根据上述时间点，获取与该时间点相关联的预定时间段上连续采集的多帧超声图像，形成待选超声图像库；具体地，可以包括如下的至少之一种：In step S14, the image processing module acquires the multi-frame ultrasound image continuously acquired in the predetermined time period associated with the time point according to the time point to form the to-be-selected ultrasound image library; specifically, the image processing module may include at least one of the following:
选取上述时间点之前预定时间段上连续采集的多帧超声图像，形成待选超声图像库；Selecting a plurality of frames of ultrasound images continuously acquired on a predetermined time period before the time point to form an ultrasound image library to be selected;
选取上述时间点之后预定时间段上连续采集的多帧超声图像，形成待选超声图像库；和Selecting a plurality of frames of ultrasound images continuously acquired over a predetermined period of time after the above time point to form a library of ultrasound images to be selected; and
选择包含上述时间点的预定时间段上连续采集的多帧超声图像，形成待选超声图像库。A plurality of frames of ultrasound images continuously acquired over a predetermined period of time including the above-mentioned time points are selected to form a library of ultrasound images to be selected.
可以理解的是，在用户进行触发按键操作后，例如当医生记录当前切面并进行按键操作，则在该操作之前、之后或前后一固定时间段内的图像切面获取数据即认定为是准确的。该固定时间段可以为1秒、2秒、3秒等，但不可能是很长时间，例如不能包含医生移动探头到另一个位置进行扫描的时间。It can be understood that after the user performs the trigger button operation, for example, when the doctor records the current slice and performs the button operation, the image slice acquisition data before, after, or before and after the operation is determined to be accurate. The fixed period of time may be 1 second, 2 seconds, 3 seconds, etc., but it may not be a long time, for example, the time when the doctor moves the probe to another position for scanning.
步骤S15，图像处理模块对待选超声图像库中的超声图像进行图像评估，获得满足图像评估标准的超声图像或电影文件。图像评估标准参照下述步骤S15中的切面匹配度和图像清晰度两个判断标准，同时也可以制定多级判断 标准来作为评判基础。In step S15, the image processing module performs image evaluation on the ultrasound image in the selected ultrasound image library to obtain an ultrasound image or a movie file that satisfies the image evaluation standard. The image evaluation standard refers to the two criteria of the face matching degree and the image sharpness in the following step S15, and can also make a multi-level judgment. The standard is used as the basis for the judgement.
可以理解的是，在步骤S15中，在一个实施例中可以获得满足图像评估标准的一帧或多帧非连续的超声图像，在另外的实施例中可以获得电影文件(多帧连续的超声图像)。下文会对该两种情形分别进行说明：It can be understood that, in step S15, one or more frames of non-continuous ultrasound images satisfying the image evaluation criteria can be obtained in one embodiment, and in other embodiments, a movie file (multi-frame continuous ultrasound images can be obtained). ). The two scenarios are described separately below:
具体地，在一个实施例中，该步骤S15包括：至少包含下述步骤S150和步骤S151之一：Specifically, in an embodiment, the step S15 includes: including at least one of the following steps S150 and S151:
步骤S150，将所述待选超声图像库中的超声图像与标准切面比较，进行图像切面匹配度判断，获得所述待选超声图像库中满足切面匹配度判断标准的多帧超声图像。Step S150: Comparing the ultrasound image in the to-be-selected ultrasound image library with a standard slice, performing image face matching degree determination, and obtaining a multi-frame ultrasound image in the candidate ultrasound image library that satisfies the face matching degree determination criterion.
图像切面匹配度判断具体为：将所述待选超声图像库中的所有超声图像分别与预存的标准切面模型图片进行比较，获得其中满足切面匹配度的多帧超声图像。The image slice matching degree determination is specifically: comparing all the ultrasound images in the candidate ultrasound image library with the pre-stored standard slice model images to obtain a multi-frame ultrasound image in which the aspect matching degree is satisfied.
可以理解的是，在该步骤中，可以预先根据不同***位的特点、设置合适的预定时长来确定待选超声图像库的容量。在将所述待选超声图像库中的所有超声图像分别与预存的标准切面模型图片进行比时，可以挑选出符合切面匹配度指标的前几幅图片进入清晰度待选列表；It can be understood that, in this step, the capacity of the ultrasound image library to be selected may be determined according to the characteristics of different examination sites and the appropriate predetermined duration. When comparing all the ultrasonic images in the selected ultrasound image library with the pre-stored standard cut surface model images, the first few images that meet the matching feature of the facet can be selected to enter the definition candidate list;
可以理解的是，在一些情况下，可以不需要进行标准切面模板匹配过程，则直接将待选超声图像库中的图片作为满足切面匹配度的超声图像。例如，对于一些人体运动相对缓慢的部位，如甲状腺，在观察到的一大段时间内剖面位置之间差异大同小异。即对于这些部位的超声图像，在预时间段内的绝大多数图片都满足切面匹配度的指标。It can be understood that, in some cases, the standard cut surface template matching process may not be required, and the image in the ultrasonic image library to be selected is directly used as the ultrasonic image satisfying the matching degree of the facet. For example, for some parts of the body that are relatively slow to move, such as the thyroid gland, the difference in profile position is similar for a large period of time observed. That is, for the ultrasound images of these parts, most of the pictures in the pre-time period satisfy the index of the aspect matching.
步骤S151，对所述待选超声图像库中的超声图像进行图像清晰度判断，获得所述待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像。Step S151: Perform image sharpness determination on the ultrasound image in the to-be-selected ultrasound image library, and obtain one or more frames of ultrasound images in the candidate ultrasound image library that satisfy the image clarity determination criterion.
该图像清晰度判断步骤包括下述中至少一种：The image sharpness determining step includes at least one of the following:
计算所述待选超声图像库中的超声图像或所述满足切面匹配度的每一帧超声图像以及其相邻帧超声图像的声速差异，确定待选超声图像库中满足 图像清晰度判断标准的一帧或多帧超声图像；具体地，可以预先设置一个阈值，当连续图片声速差异超过该阈值时，判断该位置为清晰与模糊的分界面；Calculating an ultrasound image in the to-be-selected ultrasound image library or the sound velocity difference of each frame of the ultrasound image satisfying the aspect matching degree and the adjacent frame ultrasound image, and determining that the ultrasound image library to be selected is satisfied One or more frames of ultrasound image of the image sharpness judgment standard; specifically, a threshold may be preset, and when the difference of the speed of the continuous picture exceeds the threshold, the position is determined to be a clear and fuzzy interface;
计算所述待选超声图像库中的超声图像或所述满足切面匹配度的每一帧超声图像以及其相邻帧超声图像的相关系数，根据所述相关系数，确定待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像；其中，相关系数越大，表明这两幅图片的相似度越高，可能均为清晰图片、或者均为模糊图片；Calculating an ultrasound image in the to-be-selected ultrasound image library or the correlation coefficient of each frame of the ultrasound image satisfying the matching degree of the slice and the adjacent frame ultrasound image, and determining, according to the correlation coefficient, that the ultrasound image library to be selected is satisfied One or more frames of ultrasound image of the image sharpness judgment standard; wherein the larger the correlation coefficient, the higher the similarity of the two pictures may be clear pictures or all blurred pictures;
对所述待选超声图像库中的超声图像或满足切面匹配度的每一帧超声图像以及其相邻帧超声图像进行直方图匹配，确定待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像；Performing histogram matching on the ultrasound image in the image of the candidate ultrasound image or each frame of the ultrasound image satisfying the matching degree of the slice and the adjacent frame ultrasound image, and determining one of the to-be-selected ultrasound image libraries that satisfies the image clarity criterion Frame or multi-frame ultrasound image;
对所述待选超声图像库中的超声图像或满足切面匹配度的每一帧超声图像以及其相邻帧超声图像进行平均灰度值分析，确定待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像。Performing an average gray value analysis on the ultrasound image in the ultrasound image library to be selected or each frame of the ultrasound image satisfying the matching degree of the facet and the adjacent frame ultrasound image, and determining the image clarity determination criterion in the selected ultrasound image library One or more frames of ultrasound images.
可以理解的是，当前造成图片不清晰的因素有多种，如人体呼吸运动、或医生在检查过程中移动了探头。为了排除因人体与探头的相对运动造成的影响，在本实施的步骤S152中采用了多个参考指标，如声速计算、相关系数分析、直方图匹配、图像平均灰度值等。将图片的清晰度量化为图片声速的连续稳定性、较大的前后帧相关系数值、连续的直方图统计结果、合适的图像平均灰度值等单个或多个指标组合的结果。It can be understood that there are various factors that cause the picture to be unclear, such as human breathing exercise, or the doctor moves the probe during the examination. In order to eliminate the influence caused by the relative motion of the human body and the probe, a plurality of reference indicators such as sound velocity calculation, correlation coefficient analysis, histogram matching, image average gray value, and the like are employed in step S152 of the present embodiment. The resolution of the picture is quantized as a result of continuous stability of the picture sound speed, large front and rear frame correlation coefficient values, continuous histogram statistical results, appropriate image average gray value, and the like, or a combination of single or multiple indicators.
在另外一个实施例中，该步骤S15可以生成电影文件，具体包括如下步骤：In another embodiment, the step S15 may generate a movie file, which specifically includes the following steps:
从待选超声图像库的多于一个扫描周期的预定时间段的连续多帧图像中进行抽样，获得多个单帧图像；Sampling from consecutive multi-frame images of a predetermined time period of more than one scan period of the ultrasound image library to be selected, obtaining a plurality of single-frame images;
对所述多个单帧图像进行切面匹配度判断以及图像清晰度判断中的至少一项判断；Performing at least one of a face matching degree determination and an image sharpness determination on the plurality of single frame images;
提取满足评估标准的一个扫描周期内对应的连续多帧图像，形成电影文件，并存储。 A corresponding continuous multi-frame image in one scan period that satisfies the evaluation criteria is extracted, a movie file is formed, and stored.
其中，确定满足评估标准的一个扫描周期可以采用下述的方法：Among them, the following method can be adopted to determine a scan period that satisfies the evaluation criteria:
查找连续多个抽样单帧图像均都满足图像清晰度和切面匹配度的第一判断标准，则将所述连续多个抽样单帧图像所在的扫描周期确定为满足评估标准的一个扫描周期；Finding a first criterion for satisfying image sharpness and aspect matching degree in a plurality of consecutive sampling single frame images, determining a scanning period in which the consecutive plurality of sampling single frame images are located as one scanning period satisfying an evaluation criterion;
确定一个抽样单帧图像满足图像清晰度和切面匹配度的第一判断标准，并且所述抽样单帧的相邻抽样单帧图像满足图像清晰度和切面匹配度的第二判断标准，则将该抽样单帧图像所在的扫描周期确定为满足评估标准的一个扫描周期；Determining a first criterion for satisfying image sharpness and aspect matching by a sampled single frame image, and the adjacent sampled single frame image of the sampled single frame satisfies a second criterion for image sharpness and aspect matching degree, The scan period in which the sampled single frame image is located is determined as one scan period that satisfies the evaluation criteria;
查找一个扫描周期中存在多个抽样单帧图像满足图像清晰度和切面匹配度的第二判断标准，将该扫描周期确定为满足评估标准的一个扫描周期。简答来说，如果一个扫描周期中的一个抽样单帧图像满足图像清晰度和切面匹配度的第一判断标准；而另一个扫描周期中的多个抽样单帧图像满足图像清晰度和切面匹配度的第二判断标准；则将所述另一个扫描周期确定为满足评估标准的一个扫描周期。A second criterion for finding that a plurality of sampled single-frame images satisfy the image sharpness and the aspect matching degree in one scan period is determined, and the scan period is determined as one scan period that satisfies the evaluation criteria. In short, if one sampled single frame image in one scan cycle satisfies the first criterion of image sharpness and aspect matching, and multiple sampled single frame images in another scan cycle satisfy image sharpness and facet matching a second criterion for judging; then determining the other scan period as one scan period that satisfies the evaluation criteria.
上述第二判断标准在图像清晰度和切面匹配度的要求上仅次于第一判断标准，在其中一个实施例中，可以用第一判断标准来从待选超声图像库中确定单个期望帧，也可以结合第一判断标准和第二判断标准来从候选超声图像库中确定多个期望帧，例如电影文件。当结合第一判断标准和第二判断标准时，可以更加保证自动选定的电影文件的图像连续性更好。The second judging criterion is second only to the first judging criterion in terms of image sharpness and aspect matching degree. In one embodiment, the first judging criterion may be used to determine a single desired frame from the to-be-selected ultrasound image library. A plurality of desired frames, such as movie files, may also be determined from the candidate ultrasound image library in conjunction with the first criterion and the second criterion. When the first judgment standard and the second judgment criterion are combined, it is possible to further ensure that the image continuity of the automatically selected movie file is better.
步骤S16，输出所述超声图像或电影文件。该步骤S16进一步包括：In step S16, the ultrasound image or movie file is output. The step S16 further includes:
当所述清晰度满足要求的超声图像为一帧时，通过显示器直接显示并输出；When the ultrasonic image whose resolution meets the requirement is one frame, it is directly displayed and output through the display;
当所述清晰度满足要求的超声图像为多帧时，可以通过显示器显示所述多帧超声图像的缩微图，图像处理模块在显示界面上提示用户进行选择，并根据用户的选择确定其中一帧为期望帧图像并输出；当确定的为电影文件时，输出所述电影文件。When the ultrasound image that meets the requirement is multi-frame, the micro-image of the multi-frame ultrasound image may be displayed by using a display, and the image processing module prompts the user to select on the display interface, and determines one frame according to the user's selection. The frame image is expected to be output; when it is determined to be a movie file, the movie file is output.
本实施例提出一种在超声扫描中的图像提取方法、装置以及超声成像系 统。由用户触发启动确定期望帧的流程，形成预定时间段内的待选超声图像库，并对待选超声图像库中所有超声图像进行图像切面匹配度判断以及进行清晰度识别，可以快速定位出期望图片帧位置。从而可以实现超声仪器的人性化设计，提高了超声仪器使用者获得符合要求的超声图片的效率。The embodiment provides an image extraction method, device and ultrasound imaging system in ultrasonic scanning System. The process of determining the desired frame is triggered by the user to form a library of the selected ultrasound images in the predetermined time period, and the image matching degree determination and the definition recognition are performed on all the ultrasound images in the selected ultrasound image library, so that the desired image can be quickly located. Frame position. Thereby, the humanized design of the ultrasonic instrument can be realized, and the efficiency of the ultrasonic instrument user to obtain the required ultrasonic picture is improved.
如图3所示，为本实施例提供的一种在超声扫描中的图像提取装置的一个实施例的结构示意图；在该实施例中，该在超声扫描中的图像提取装置1包括：FIG. 3 is a schematic structural diagram of an embodiment of an image extracting apparatus in an ultrasonic scanning according to an embodiment of the present invention. In this embodiment, the image extracting apparatus 1 in the ultrasonic scanning includes:
触发单元10，用于在连续采集的超声图像中，获得触发图像位置选择的时间点；The triggering unit 10 is configured to obtain a time point of triggering image position selection in the continuously acquired ultrasound image;
待选超声图像库生成单元11，用于根据所述时间点，获取与所述时间点相关联的预定时间段上连续采集的多帧超声图像，形成待选超声图像库；The to-be-selected ultrasound image library generating unit 11 is configured to acquire, according to the time point, a multi-frame ultrasound image continuously acquired on a predetermined time period associated with the time point to form a to-be-selected ultrasound image library;
图像评估单元12，用于对所述待选超声图像库中的超声图像进行图像评估，获得满足图像评估标准的超声图像或电影文件；The image evaluation unit 12 is configured to perform image evaluation on the ultrasound image in the to-be-selected ultrasound image library to obtain an ultrasound image or a movie file that meets the image evaluation criteria;
输出单元14，用于输出所述超声图像或电影文件。The output unit 14 is configured to output the ultrasound image or movie file.
在其中一个实施例中，其中待选超声图像库生成单元11具体以下述之一种方法形成待选超声图像库：In one of the embodiments, the to-be-selected ultrasound image library generating unit 11 specifically forms the to-be-selected ultrasound image library in one of the following ways:
选取所述时间点之前预定时间段上连续采集的多帧超声图像，形成待选超声图像库；Selecting a plurality of frames of ultrasound images continuously acquired on a predetermined time period before the time point to form a library of ultrasound images to be selected;
选取所述时间点之后预定时间段上连续采集的多帧超声图像，形成待选超声图像库；Selecting a plurality of frames of ultrasound images continuously acquired over a predetermined period of time after the time point to form a library of ultrasound images to be selected;
选择包含所述时间点的预定时间段上连续采集的多帧超声图像，形成待选超声图像库。A plurality of frames of ultrasound images continuously acquired over a predetermined period of time including the point in time are selected to form a library of ultrasound images to be selected.
请结合图4所示，在其中一个实施例中，其中图像评估单元12进一步包括：Please refer to FIG. 4, in one embodiment, wherein the image evaluation unit 12 further comprises:
切面判断单元121，用于将所述待选超声图像库中超声图像与标准切面比较，进行图像切面匹配度判断，获得所述待选超声图像库中满足切面匹配度判断标准的多帧超声图像； The cut surface determining unit 121 is configured to compare the ultrasonic image in the to-be-selected ultrasonic image library with a standard cut surface, perform image cut surface matching degree determination, and obtain a multi-frame ultrasonic image that satisfies the criterion of the matching degree of the matching surface in the selected ultrasonic image database. ;
清晰度判断单元122，用于对所述待选超声图像库中超声图像进行清晰度识别，获得所述待选超声图像库中图像清晰度判断标准的一帧或多帧超声图像。The definition determining unit 122 is configured to perform resolution recognition on the ultrasound image in the to-be-selected ultrasound image library, and obtain one or more frames of ultrasound images in the image clarity determination standard in the candidate ultrasound image library.
在其中一个实施例中，其中切面判断单元121具体地将所述待选超声图像库中的所有超声图像分别与预存的标准切面模型图片进行比较，获得其中满足切面匹配度的多帧超声图像。In one embodiment, the section determining unit 121 specifically compares all the ultrasound images in the candidate ultrasound image library with the pre-stored standard section model pictures to obtain a multi-frame ultrasound image in which the aspect matching degree is satisfied.
清晰度判断单元122通过下述中至少一种实现清晰度判断：The sharpness judging unit 122 realizes the sharpness judgment by at least one of the following:
计算所述待选超声图像库中的超声图像所述满足切面匹配度的每一帧超声图像以及其相邻帧超声图像的声速差异，确定所述待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像；Calculating a difference in sound speed of each frame of the ultrasound image satisfying the aspect matching degree of the ultrasound image in the to-be-selected ultrasound image library and the sound velocity of the adjacent frame ultrasound image, and determining the image clarity determination criterion in the candidate ultrasound image library One or more frames of ultrasound images;
计算所述待选超声图像库中的超声图像所述满足切面匹配度的每一帧超声图像以及其相邻帧超声图像的相关系数，根据所述相关系数，确定所述待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像；Calculating a correlation coefficient of each frame of the ultrasound image satisfying the aspect matching degree and the adjacent frame ultrasound image of the ultrasound image in the to-be-selected ultrasound image library, and determining the candidate ultrasound image library according to the correlation coefficient One or more frames of ultrasound images satisfying the criteria for image sharpness determination;
对所述待选超声图像库中的超声图像满足切面匹配度的每一帧超声图像以及其相邻帧超声图像进行直方图匹配，确定所述待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像；Performing histogram matching on each frame of the ultrasound image in the ultrasound image library to be selected to meet the aspect matching degree and the adjacent frame ultrasound image, and determining the image clarity determination criterion in the candidate ultrasound image library. One or more frames of ultrasound images;
对所述待选超声图像库中的超声图像满足切面匹配度的每一帧超声图像以及其相邻帧超声图像进行平均灰度值分析，确定所述待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像。Performing an average gray value analysis on each frame of the ultrasound image in the ultrasound image library to be selected to meet the aspect matching degree and the adjacent frame ultrasound image, and determining that the image of the candidate ultrasound image library satisfies the image clarity determination Standard one or more frames of ultrasound images.
在其中一个实施例中，所述显示输出单元14以下述之一种方式进行显示输出：In one of the embodiments, the display output unit 14 performs display output in one of the following manners:
当所述清晰度满足要求的超声图像为一帧时，直接显示并输出；When the ultrasonic image whose resolution meets the requirement is one frame, it is directly displayed and output;
当所述清晰度满足要求的超声图像为多帧时，显示所述多帧超声图像的缩微图，提示用户进行选择，并根据用户的选择确定其中一帧为期望帧图像并输出。When the ultrasound image whose resolution meets the requirement is a plurality of frames, the thumbnail of the multi-frame ultrasound image is displayed, prompting the user to select, and determining one of the frames as the desired frame image according to the user's selection and outputting.
如图5所示，在另一个实施例中，所述图像评估单元12进一步包括：As shown in FIG. 5, in another embodiment, the image evaluation unit 12 further includes:
抽样单元120，用于从待选超声图像库的多于一个扫描周期的预定时间 段的连续多帧图像中进行抽样，获得多个单帧图像； Sampling unit 120 for a predetermined time of more than one scan period from the library of ultrasound images to be selected Sampling in consecutive multi-frame images of segments to obtain multiple single-frame images;
切面判断单元121，用于将所述待选超声图像库中超声图像与标准切面比较，进行图像切面匹配度判断；The slice determining unit 121 is configured to compare the ultrasonic image in the to-be-selected ultrasound image library with a standard slice, and perform image face matching degree determination;
清晰度判断单元122，用于对所述待选超声图像库中超声图像进行清晰度识别；The definition determining unit 122 is configured to perform sharpness recognition on the ultrasound image in the to-be-selected ultrasound image library;
提取单元123，用于提取满足图像评估标准的一个扫描周期内对应的连续多帧图像，形成电影文件，并存储。The extracting unit 123 is configured to extract consecutive consecutive multi-frame images in one scanning period that meet the image evaluation standard, form a movie file, and store the file.
其中，提取单元123通过下述方法来确定满足评估标准的一个扫描周期：Wherein, the extracting unit 123 determines one scanning period that satisfies the evaluation criteria by the following method:
查找连续多个抽样单帧图像均都满足图像清晰度和切面匹配度的第一判断标准，将所述连续多个抽样单帧图像所在的扫描周期确定为满足评估标准的一个扫描周期；Finding a first criterion for satisfying image sharpness and aspect matching degree in a plurality of consecutive sampling single frame images, determining a scanning period in which the consecutive plurality of sampling single frame images are located as one scanning period satisfying an evaluation criterion;
确定一个抽样单帧图像满足图像清晰度和切面匹配度的第一判断标准，并且所述抽样单帧的相邻抽样单帧图像满足图像清晰度和切面匹配度的第二判断标准，将该抽样单帧图像所在的扫描周期确定为满足评估标准的一个扫描周期；和，Determining a first criterion for satisfying image sharpness and aspect matching by a sampled single frame image, and the adjacent single frame image of the sampled single frame satisfies a second criterion for image sharpness and aspect matching, and the sampling The scan period in which the single-frame image is located is determined as one scan period that satisfies the evaluation criteria; and,
查找一个扫描周期中存在多个抽样单帧图像满足图像清晰度和切面匹配度的第二判断标准，将该扫描周期确定为满足评估标准的一个扫描周期。具体可参见上文中步骤S15的相关说明。A second criterion for finding that a plurality of sampled single-frame images satisfy the image sharpness and the aspect matching degree in one scan period is determined, and the scan period is determined as one scan period that satisfies the evaluation criteria. For details, refer to the related description of step S15 above.
其中，切面判断单元121与清晰度判断单元122的功能可参照前述对图4的描述。The functions of the slice determining unit 121 and the definition determining unit 122 can be referred to the foregoing description of FIG. 4.
更多的细节，可一并参见前述对图2的描述，在些不进行详述。For further details, reference may be made to the foregoing description of FIG. 2, which will not be described in detail.
基于图1所示的***结构，在其中一个实施例中，还提供了一种在超声扫描中的图像提取***，其中，包括：Based on the system structure shown in FIG. 1, in one embodiment, an image extraction system in ultrasonic scanning is further provided, which includes:
探头；Probe
发射电路和接收电路，用于激励所述探头向组织目标发射超声波束，并接收所述超声波束的回波，获得回波信号；a transmitting circuit and a receiving circuit, configured to excite the probe to emit an ultrasonic beam to the tissue target, and receive an echo of the ultrasonic beam to obtain an echo signal;
图像处理模块，用于根据所述回波信号，生成超声图像，并存储，在连 续采集的超声图像中，获得触发图像位置选择的时间点，根据所述时间点，获取与所述时间点相关联的预定时间段上连续采集的多帧超声图像，形成待选超声图像库，对所述待选超声图像库中超声图像进行图像评估，获得满足图像评估标准的超声图像或电影文件；An image processing module, configured to generate an ultrasound image according to the echo signal, and store In the continuously acquired ultrasound image, a time point for triggering the image position selection is obtained, and according to the time point, the multi-frame ultrasound image continuously acquired on the predetermined time period associated with the time point is acquired, and the ultrasound image library to be selected is formed. Performing image evaluation on the ultrasound image in the to-be-selected ultrasound image library to obtain an ultrasound image or a movie file that satisfies the image evaluation criteria;
显示器，用于显示所述超声图像或电影文件并输出。a display for displaying the ultrasound image or movie file and outputting.
上述各个组件或模块的对应关系参见前述图1中的说明。图像处理模块执行图2中的各个步骤过程，其具体包含了图3至图5的在超声扫描中的图像提取装置的功能模块，在此不再重复累述，针对各个步骤过程的具体解释可参见前文相关内容的说明。本文中提到的图像处理模块可以采用一片处理器或多片处理器构成。For the corresponding relationship of each component or module described above, refer to the description in FIG. 1 above. The image processing module performs the various steps in FIG. 2, which specifically includes the functional modules of the image extracting apparatus in the ultrasonic scanning of FIG. 3 to FIG. 5, and the detailed description of each step process may be omitted. See the description of the relevant content above. The image processing module mentioned herein may be constructed by one processor or multiple processors.
在其中一个实施例中，所述图像处理模块通过下述方式获得时间点：In one of the embodiments, the image processing module obtains a point in time by:
根据用户的操作，在所述连续采集的超声图像中选择一帧，以所选择的帧对应的位置时间作为所述时间点。According to the operation of the user, one frame is selected in the continuously acquired ultrasound images, and the position time corresponding to the selected frame is taken as the time point.
在其中一个实施例中，所述图像处理模块通过下述方式获得待选超声图像库：In one embodiment, the image processing module obtains a library of ultrasound images to be selected by:
选取所述时间点之前或/及之后预定时间段上连续采集的多帧超声图像，形成待选超声图像库。A plurality of frames of ultrasound images continuously acquired before or/or after the time point are selected to form a library of ultrasound images to be selected.
在其中一个实施例中，所述图像处理模块通过下述方式获得满足切面匹配度的多帧超声图像：In one of the embodiments, the image processing module obtains a multi-frame ultrasound image that satisfies the aspect matching degree by:
将所述待选超声图像库中的所有超声图像分别与预存的标准切面模型图片进行比较，获得其中满足切面匹配度的多帧超声图像。Comparing all the ultrasound images in the candidate ultrasound image library with the pre-stored standard section model images to obtain a multi-frame ultrasound image in which the aspect matching degree is satisfied.
在其中一个实施例中，所述图像处理模块通过下述方式中至少一种获得清晰度满足要求的一帧或多帧超声图像：In one embodiment, the image processing module obtains one or more frames of ultrasound images whose resolution meets the requirements by at least one of the following:
计算所述待选超声图像库中的超声图像或所述满足切面匹配度的每一帧超声图像以及其相邻帧超声图像的声速差异，确定所述待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像；Calculating an ultrasound image in the to-be-selected ultrasound image library or the sound velocity difference of each frame of the ultrasound image satisfying the aspect matching degree and the adjacent frame ultrasound image, and determining that the image of the candidate ultrasound image library satisfies the image clarity determination Standard one or more frames of ultrasound images;
计算所述待选超声图像库中的超声图像或所述满足切面匹配度的每一 帧超声图像以及其相邻帧超声图像的相关系数，根据所述相关系数，确定所述待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像；Calculating an ultrasound image in the to-be-selected ultrasound image library or each of the matching slice matching degrees a frame ultrasound image and a correlation coefficient of the adjacent frame ultrasound image, and determining, according to the correlation coefficient, one or more frames of ultrasound images in the candidate ultrasound image library that satisfy the image clarity determination criterion;
对所述待选超声图像库中的超声图像或满足切面匹配度的每一帧超声图像以及其相邻帧超声图像进行直方图匹配，确定所述待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像；Performing histogram matching on the ultrasound image in the to-be-selected ultrasound image library or each frame of the ultrasound image satisfying the matching degree of the facet and the adjacent frame ultrasound image, and determining the image clarity determination criterion in the candidate ultrasound image library One or more frames of ultrasound images;
对所述待选超声图像库中的超声图像或满足切面匹配度的每一帧超声图像以及其相邻帧超声图像进行平均灰度值分析，确定所述待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像。Performing an average gray value analysis on the ultrasound image in the to-be-selected ultrasound image library or each frame of the ultrasound image satisfying the aspect matching degree and the adjacent frame ultrasound image, and determining that the image clarity is satisfied in the candidate ultrasound image library A standard one or more frame ultrasound image is judged.
在其中一个实施例中，所述显示器以下述之一种方式进行显示输出：In one of the embodiments, the display is displayed in one of the following ways:
当所述清晰度满足要求的超声图像为一帧时，直接显示并输出；When the ultrasonic image whose resolution meets the requirement is one frame, it is directly displayed and output;
当所述清晰度满足要求的超声图像为多帧时，显示所述多帧超声图像的缩微图，提示用户进行选择，并根据用户的选择确定其中一帧为期望帧超声图像并输出。When the ultrasound image whose resolution meets the requirement is a plurality of frames, a thumbnail of the multi-frame ultrasound image is displayed, prompting the user to select, and determining one of the frames as the desired frame ultrasound image according to the user's selection and outputting.
可以理解的是，本实施例在一些应用场景中具有很明显的优点。例如，在一个场景中，当用户在超声采集图像的过程，按下冻结键或存储键之后，***会识别按下冻结键或存储键后确定提供给冻结的图像呈现在显示器上，但是在现有的常规方法中，如果此时用户手部出现位移，则探头会发生移位，那么呈现在显示器上的图像将不是用户在按下冻结键或存储键时期望得到的图像，这个时候就需要回翻图像，而采用本实施例提供的方法，在按下冻结键或存储键后，无论探头是否发生移位，通过进行切面匹配度判断和图像清晰度判断的过程，在显示器上呈现的图像将会更加接近用户期望得到的图像(期望帧图像)。It can be understood that this embodiment has obvious advantages in some application scenarios. For example, in a scene, when the user presses the freeze button or the store button during the process of ultrasonic acquisition of the image, the system recognizes that pressing the freeze button or the store button determines that the image provided for the freeze is presented on the display, but now In some conventional methods, if the user's hand is displaced at this time, the probe will shift, and the image presented on the display will not be the image that the user expects when pressing the freeze button or the storage button. Turning back the image, and using the method provided in this embodiment, after pressing the freeze button or the storage button, the image presented on the display is performed by performing the process of face matching degree judgment and image sharpness determination regardless of whether the probe is displaced or not. It will be closer to the image that the user expects (the desired frame image).
在另外一个场景中，当用户在超声采集图像的过程中，可以实现自动存储电影文件。现有的常规方法中存储电影文件的操作方式是：当用户在扫描过程中对照显示器确定好了扫描位置以及切面位置，那么按下录制键，开始录制电影，在此过程中探头如果发生移位，那么电影中的图像也会跑偏，那么就需要重新录制，而采用本实施例的方法后，则当开始按下录制键时，会 录制关联此时间点附近一段时间内的电影，然后评估后提取期望电影文件给用户，探头是否发生移动都不会影响电影文件的质量。In another scenario, when the user is acquiring images in the ultrasound, automatic storage of the movie file can be achieved. The conventional method of storing a movie file in the conventional method is: when the user determines the scanning position and the cutting position according to the display during the scanning process, press the recording button to start recording the movie, and if the probe shifts during the process. , then the image in the movie will also be off-track, then you need to re-record, and after using the method of this embodiment, when you start to press the record button, Recording a movie associated with a period of time near this point in time, and then extracting the desired movie file to the user after evaluation, whether the probe moves or not will not affect the quality of the movie file.
本实施例提供一种在超声扫描中的图像提取方法、装置及超声成像***。由用户触发启动确定期望帧超声图像的流程，根据人体不同***位的运动特点，形成预定时间段内的待选超声图像库，并对待选超声图像库中的超声图像进行图像切面匹配度判断或/及进行图像清晰度判断，以排除因操作或组织运动造成的模糊图片，可以快速定位出期望帧超声图像的位置。从而可以实现超声仪器的人性化设计，提高了超声仪器使用者获得符合要求的超声图片的效率。The embodiment provides an image extraction method, device and ultrasonic imaging system in ultrasonic scanning. The process of determining the desired frame ultrasound image is triggered by the user, and the ultrasound image library to be selected within a predetermined time period is formed according to the motion characteristics of different examination parts of the human body, and the image matching degree of the ultrasound image in the selected ultrasound image library is determined or / and image sharpness judgment to eliminate blurred images caused by operation or tissue movement, can quickly locate the position of the desired frame ultrasound image. Thereby, the humanized design of the ultrasonic instrument can be realized, and the efficiency of the ultrasonic instrument user to obtain the required ultrasonic picture is improved.
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，上述的程序可存储于计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，上述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the above program can be stored in a computer readable storage medium, and the program is executed. At the time, the flow of the embodiment of each of the above methods may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明，不能认定本发明的具体实施只局限于这些说明。对于本发明所属技术领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本发明的保护范围。 The above is a further detailed description of the present invention in connection with the specific preferred embodiments, and the specific embodiments of the present invention are not limited to the description. It will be apparent to those skilled in the art that the present invention may be made without departing from the spirit and scope of the invention.

Claims (24)

  1. 一种在超声扫描中的图像提取方法，其中，包括：An image extraction method in ultrasonic scanning, which comprises:
    通过超声探头向组织目标发射超声波束；Transmitting an ultrasonic beam to the tissue target through the ultrasonic probe;
    接收超声波束的回波，获得回波信号；Receiving an echo of the ultrasonic beam to obtain an echo signal;
    根据所述回波信号，生成超声图像；Generating an ultrasound image based on the echo signal;
    在连续采集的超声图像中，获得触发图像位置选择的时间点；In the continuously acquired ultrasound image, a time point at which the trigger image position selection is obtained is obtained;
    根据所述时间点，获取与所述时间点相关联的预定时间段上采集的多帧超声图像，形成待选超声图像库；Obtaining, according to the time point, a multi-frame ultrasound image acquired on a predetermined time period associated with the time point to form a to-be-selected ultrasound image library;
    对所述待选超声图像库中的超声图像进行图像评估，获得满足图像评估标准的超声图像或电影文件；Performing image evaluation on the ultrasound image in the to-be-selected ultrasound image library to obtain an ultrasound image or a movie file that satisfies the image evaluation criteria;
    输出所述超声图像或电影文件。The ultrasound image or movie file is output.
  2. 如权利要求1所述的一种在超声扫描中的图像提取方法，其中，所述在连续采集的超声图像中，获得触发图像位置选择的时间点的步骤具体为：The image extraction method in the ultrasonic scanning according to claim 1, wherein in the continuously acquired ultrasound image, the step of obtaining a time point for triggering the image position selection is specifically:
    根据用户点击冻结键或者存储键的操作，在所述连续采集的超声图像中选择一帧，以所选择的帧对应的位置时间作为所述时间点。According to the operation of the user clicking the freeze key or the storage key, one frame is selected in the continuously acquired ultrasonic image, and the position time corresponding to the selected frame is taken as the time point.
  3. 如权利要求1所述的一种在超声扫描中的图像提取方法，其中，所述根据所述时间点，获取与所述时间点相关联的预定时间段上连续采集的多帧超声图像，形成待选超声图像库的步骤具体为下述之一种：The image extraction method in an ultrasound scan according to claim 1, wherein the acquiring, according to the time point, acquiring a plurality of frames of ultrasound images continuously acquired over a predetermined time period associated with the time point, forming The steps of the ultrasound image library to be selected are specifically as follows:
    选取所述时间点之前预定时间段上连续采集的多帧超声图像，形成待选超声图像库；Selecting a plurality of frames of ultrasound images continuously acquired on a predetermined time period before the time point to form a library of ultrasound images to be selected;
    选取所述时间点之后预定时间段上连续采集的多帧超声图像，形成待选超声图像库；Selecting a plurality of frames of ultrasound images continuously acquired over a predetermined period of time after the time point to form a library of ultrasound images to be selected;
    选择包含所述时间点的预定时间段上连续采集的多帧超声图像，形成待选超声图像库。A plurality of frames of ultrasound images continuously acquired over a predetermined period of time including the point in time are selected to form a library of ultrasound images to be selected.
  4. 如权利要求1所述的一种在超声扫描中的图像提取方法，其特征在于，对所述待选超声图像库中的超声图像进行图像评估，获得满足图像评估 标准的超声图像或电影文件的步骤至少包含下述步骤之一：The image extraction method in ultrasonic scanning according to claim 1, wherein image evaluation is performed on the ultrasound image in the to-be-selected ultrasound image library, and the image evaluation is satisfied. The steps of a standard ultrasound image or movie file include at least one of the following steps:
    将所述待选超声图像库中的超声图像与标准切面比较，进行图像切面匹配度判断；Comparing the ultrasonic image in the selected ultrasound image library with a standard cut surface, and performing image cut surface matching degree determination;
    对所述待选超声图像库中的超声图像进行图像清晰度判断。Image sharpness determination is performed on the ultrasound image in the to-be-selected ultrasound image library.
  5. 如权利要求4所述的一种在超声扫描中的图像提取方法，其中，对所述待选超声图像库中的超声图像进行图像清晰度判断的步骤包括下述中至少一种：The image extraction method in ultrasonic scanning according to claim 4, wherein the step of performing image sharpness determination on the ultrasonic image in the to-be-selected ultrasonic image library comprises at least one of the following:
    计算所述待选超声图像库中的超声图像或所述满足切面匹配度的每一帧超声图像以及其相邻帧超声图像的声速差异，确定所述待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像；Calculating an ultrasound image in the to-be-selected ultrasound image library or the sound velocity difference of each frame of the ultrasound image satisfying the aspect matching degree and the adjacent frame ultrasound image, and determining that the image of the candidate ultrasound image library satisfies the image clarity determination Standard one or more frames of ultrasound images;
    计算所述待选超声图像库中的超声图像或所述满足切面匹配度的每一帧超声图像以及其相邻帧超声图像的相关系数，根据所述相关系数，确定所述待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像；Calculating an ultrasound image in the to-be-selected ultrasound image library or the correlation coefficient of each frame of the ultrasound image satisfying the matching degree of the slice and the adjacent frame ultrasound image, and determining the candidate ultrasound image library according to the correlation coefficient One or more frames of ultrasound images satisfying the criteria for image sharpness determination;
    对所述待选超声图像库中的超声图像或满足切面匹配度的每一帧超声图像以及其相邻帧超声图像进行直方图匹配，确定所述待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像；Performing histogram matching on the ultrasound image in the to-be-selected ultrasound image library or each frame of the ultrasound image satisfying the matching degree of the facet and the adjacent frame ultrasound image, and determining the image clarity determination criterion in the candidate ultrasound image library One or more frames of ultrasound images;
    对所述待选超声图像库中的超声图像或满足切面匹配度的每一帧超声图像以及其相邻帧超声图像进行平均灰度值分析，确定所述待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像。Performing an average gray value analysis on the ultrasound image in the to-be-selected ultrasound image library or each frame of the ultrasound image satisfying the aspect matching degree and the adjacent frame ultrasound image, and determining that the image clarity is satisfied in the candidate ultrasound image library A standard one or more frame ultrasound image is judged.
  6. 如权利要求5所述的一种在超声扫描中的图像提取方法，其中，所述输出所述超声图像或电影文件的步骤进一步包括：An image extraction method in an ultrasonic scan according to claim 5, wherein said step of outputting said ultrasonic image or movie file further comprises:
    当所述清晰度满足要求的超声图像为一帧时，直接显示并输出；When the ultrasonic image whose resolution meets the requirement is one frame, it is directly displayed and output;
    当所述清晰度满足要求的超声图像为多帧时，显示所述多帧超声图像的缩微图，提示用户进行选择，并根据用户的选择确定其中一帧为期望帧图像并输出。When the ultrasound image whose resolution meets the requirement is a plurality of frames, the thumbnail of the multi-frame ultrasound image is displayed, prompting the user to select, and determining one of the frames as the desired frame image according to the user's selection and outputting.
  7. 如权利要求4所述的一种在超声扫描中的图像提取方法，其中，对所述待选超声图像库中的超声图像进行图像评估，获得满足图像评估标准的超声图像或电影文件包括如下步骤： The image extraction method in ultrasonic scanning according to claim 4, wherein performing image evaluation on the ultrasonic image in the library of the selected ultrasound image to obtain an ultrasound image or a movie file that satisfies the image evaluation standard comprises the following steps :
    从待选超声图像库的多于一个扫描周期的预定时间段的连续多帧图像中进行抽样，获得多个单帧图像；Sampling from consecutive multi-frame images of a predetermined time period of more than one scan period of the ultrasound image library to be selected, obtaining a plurality of single-frame images;
    对所述多个单帧图像进行切面匹配度判断以及图像清晰度判断中的至少一项判断；Performing at least one of a face matching degree determination and an image sharpness determination on the plurality of single frame images;
    提取满足图像评估标准的一个扫描周期内对应的连续多帧图像，形成电影文件。A corresponding continuous multi-frame image within one scan period that satisfies the image evaluation criteria is extracted to form a movie file.
  8. 如权利要求7所述的一种在超声扫描中的图像提取方法，其中，提取满足评估标准的一个扫描周期内对应的连续多帧图像的步骤包括如下中至少一种：The image extraction method in ultrasonic scanning according to claim 7, wherein the step of extracting the corresponding continuous multi-frame image within one scanning period that satisfies the evaluation criterion comprises at least one of the following:
    查找连续多个抽样单帧图像均都满足图像清晰度和切面匹配度的第一判断标准，将所述连续多个抽样单帧图像所在的扫描周期确定为满足评估标准的一个扫描周期；Finding a first criterion for satisfying image sharpness and aspect matching degree in a plurality of consecutive sampling single frame images, determining a scanning period in which the consecutive plurality of sampling single frame images are located as one scanning period satisfying an evaluation criterion;
    确定一个抽样单帧图像满足图像清晰度和切面匹配度的第一判断标准，并且所述抽样单帧的相邻抽样单帧图像满足图像清晰度和切面匹配度的第二判断标准，将该抽样单帧图像所在的扫描周期确定为满足评估标准的一个扫描周期；以及Determining a first criterion for satisfying image sharpness and aspect matching by a sampled single frame image, and the adjacent single frame image of the sampled single frame satisfies a second criterion for image sharpness and aspect matching, and the sampling The scan period in which the single frame image is located is determined as one scan period that satisfies the evaluation criteria;
    查找一个扫描周期中存在多个抽样单帧图像满足图像清晰度和切面匹配度的第二判断标准，将该扫描周期确定为满足评估标准的一个扫描周期。A second criterion for finding that a plurality of sampled single-frame images satisfy the image sharpness and the aspect matching degree in one scan period is determined, and the scan period is determined as one scan period that satisfies the evaluation criteria.
  9. 一种在超声扫描中的图像提取装置，其中，包括：An image extraction device in an ultrasonic scan, comprising:
    触发单元，用于在连续采集的超声图像中，获得触发图像位置选择的时间点；a triggering unit, configured to obtain a time point of triggering image position selection in the continuously acquired ultrasound image;
    待选超声图像库生成单元，用于根据所述时间点，获取与所述时间点相关联的预定时间段上连续采集的多帧超声图像，形成待选超声图像库；The ultrasound image library generating unit is configured to acquire, according to the time point, a multi-frame ultrasound image continuously acquired on a predetermined time period associated with the time point to form a to-be-selected ultrasound image library;
    图像评估单元，用于对所述待选超声图像库中的超声图像进行图像评估，获得满足图像评估标准的超声图像或电影文件；An image evaluation unit, configured to perform image evaluation on the ultrasound image in the to-be-selected ultrasound image library, to obtain an ultrasound image or a movie file that meets an image evaluation standard;
    输出单元，用于输出所述超声图像或电影文件。An output unit for outputting the ultrasound image or movie file.
  10. 如权利要求9所述的一种在超声扫描中的图像提取装置，其中触发单元具体地根据用户点击冻结键或者存储键的操作，在所述连续采集的超声 图像中选择一帧，以所选择的帧对应的位置时间作为所述时间点。An image extracting apparatus in an ultrasonic scan according to claim 9, wherein the triggering unit is specifically in accordance with the operation of the user clicking a freeze key or a storage key in the continuously acquired ultrasound One frame is selected in the image, and the position time corresponding to the selected frame is taken as the time point.
  11. 如权利要求9所述的一种在超声扫描中的图像提取装置，其中待选超声图像库生成单元具体地以下述之一种方法形成待选超声图像库：An image extracting apparatus in an ultrasonic scan according to claim 9, wherein the to-be-selected ultrasonic image library generating unit specifically forms the to-be-selected ultrasonic image library in one of the following methods:
    选取所述时间点之前预定时间段上连续采集的多帧超声图像，形成待选超声图像库；Selecting a plurality of frames of ultrasound images continuously acquired on a predetermined time period before the time point to form a library of ultrasound images to be selected;
    选取所述时间点之后预定时间段上连续采集的多帧超声图像，形成待选超声图像库；Selecting a plurality of frames of ultrasound images continuously acquired over a predetermined period of time after the time point to form a library of ultrasound images to be selected;
    选择包含所述时间点的预定时间段上连续采集的多帧超声图像，形成待选超声图像库。A plurality of frames of ultrasound images continuously acquired over a predetermined period of time including the point in time are selected to form a library of ultrasound images to be selected.
  12. 如权利要求9-11任一项所述的一种在超声扫描中的图像提取装置，其中图像评估单元进一步包括：An image extracting apparatus in an ultrasonic scan according to any one of claims 9 to 11, wherein the image evaluating unit further comprises:
    切面判断单元，用于将所述待选超声图像库中超声图像与标准切面比较，进行图像切面匹配度判断，获得所述待选超声图像库中满足切面匹配度判断标准的多帧超声图像；a section determining unit, configured to compare the ultrasound image in the to-be-selected ultrasound image library with a standard section, and perform image section matching degree determination, and obtain a multi-frame ultrasound image in the to-be-selected ultrasound image library that satisfies the criterion of the aspect matching degree;
    清晰度判断单元，用于对所述待选超声图像库中超声图像进行清晰度识别，获得所述待选超声图像库中图像清晰度判断标准的一帧或多帧超声图像。And a sharpness determining unit, configured to perform sharpness recognition on the ultrasonic image in the to-be-selected ultrasonic image library, and obtain one or more frames of ultrasonic images of the image sharpness determination standard in the to-be-selected ultrasonic image library.
  13. 如权利要求12所述的一种在超声扫描中的图像提取装置，其中清晰度判断单元通过下述中至少一种方法进行清晰度判断：An image extracting apparatus in an ultrasonic scan according to claim 12, wherein the sharpness judging unit performs the sharpness judgment by at least one of the following methods:
    计算所述待选超声图像库中的超声图像或所述满足切面匹配度的每一帧超声图像以及其相邻帧超声图像的声速差异，确定所述待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像；Calculating an ultrasound image in the to-be-selected ultrasound image library or the sound velocity difference of each frame of the ultrasound image satisfying the aspect matching degree and the adjacent frame ultrasound image, and determining that the image of the candidate ultrasound image library satisfies the image clarity determination Standard one or more frames of ultrasound images;
    计算所述待选超声图像库中的超声图像或所述满足切面匹配度的每一帧超声图像以及其相邻帧超声图像的相关系数，根据所述相关系数，确定所述待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像；Calculating an ultrasound image in the to-be-selected ultrasound image library or the correlation coefficient of each frame of the ultrasound image satisfying the matching degree of the slice and the adjacent frame ultrasound image, and determining the candidate ultrasound image library according to the correlation coefficient One or more frames of ultrasound images satisfying the criteria for image sharpness determination;
    对所述待选超声图像库中的超声图像或满足切面匹配度的每一帧超声图像以及其相邻帧超声图像进行直方图匹配，确定所述待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像； Performing histogram matching on the ultrasound image in the to-be-selected ultrasound image library or each frame of the ultrasound image satisfying the matching degree of the facet and the adjacent frame ultrasound image, and determining the image clarity determination criterion in the candidate ultrasound image library One or more frames of ultrasound images;
    对所述待选超声图像库中的超声图像或满足切面匹配度的每一帧超声图像以及其相邻帧超声图像进行平均灰度值分析，确定所述待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像。Performing an average gray value analysis on the ultrasound image in the to-be-selected ultrasound image library or each frame of the ultrasound image satisfying the aspect matching degree and the adjacent frame ultrasound image, and determining that the image clarity is satisfied in the candidate ultrasound image library A standard one or more frame ultrasound image is judged.
  14. 如权利要求13所述的一种在超声扫描中的图像提取装置，其中，所述输出单元以下述之一种方式进行输出：An image pickup apparatus in an ultrasonic scan according to claim 13, wherein said output unit outputs in one of the following manners:
    当所述清晰度满足要求的超声图像为一帧时，直接显示并输出；When the ultrasonic image whose resolution meets the requirement is one frame, it is directly displayed and output;
    当所述清晰度满足要求的超声图像为多帧时，显示所述多帧超声图像的缩微图，提示用户进行选择，并根据用户的选择确定其中一帧为期望帧图像并输出。When the ultrasound image whose resolution meets the requirement is a plurality of frames, the thumbnail of the multi-frame ultrasound image is displayed, prompting the user to select, and determining one of the frames as the desired frame image according to the user's selection and outputting.
  15. 如权利要求9-11任一项所述的一种在超声扫描中的图像提取装置，其中，所述图像评估单元进一步包括：An image extracting apparatus in an ultrasonic scan according to any one of claims 9 to 11, wherein the image evaluating unit further comprises:
    抽样单元，用于从待选超声图像库的多于一个扫描周期的预定时间段的连续多帧图像中进行抽样，获得多个单帧图像；a sampling unit, configured to perform sampling from consecutive multi-frame images of a predetermined time period of more than one scanning period of the ultrasound image library to be selected, to obtain a plurality of single-frame images;
    切面判断单元，用于将所述待选超声图像库中超声图像与标准切面比较，进行图像切面匹配度判断；a facet determining unit, configured to compare the ultrasonic image in the to-be-selected ultrasound image library with a standard slice, and perform image face matching degree determination;
    清晰度判断单元，用于对所述待选超声图像库中超声图像进行清晰度识别；a sharpness determining unit, configured to perform sharpness recognition on the ultrasonic image in the to-be-selected ultrasonic image library;
    提取单元，用于提取满足图像评估标准的一个扫描周期内对应的连续多帧图像，形成电影文件。And an extracting unit, configured to extract a corresponding continuous multi-frame image in one scanning period that satisfies the image evaluation standard, to form a movie file.
  16. 如权利要求15所述的一种在超声扫描中的图像提取装置，其中，提取单元通过下述方法来确定满足评估标准的一个扫描周期：An image pickup apparatus in an ultrasonic scan according to claim 15, wherein the extracting unit determines a scan period that satisfies the evaluation criteria by the following method:
    查找连续多个抽样单帧图像均都满足图像清晰度和切面匹配度的第一判断标准，将所述连续多个抽样单帧图像所在的扫描周期确定为满足评估标准的一个扫描周期；Finding a first criterion for satisfying image sharpness and aspect matching degree in a plurality of consecutive sampling single frame images, determining a scanning period in which the consecutive plurality of sampling single frame images are located as one scanning period satisfying an evaluation criterion;
    确定一个抽样单帧图像满足图像清晰度和切面匹配度的第一判断标准，并且所述抽样单帧的相邻抽样单帧图像满足图像清晰度和切面匹配度的第二判断标准，将该抽样单帧图像所在的扫描周期确定为满足评估标准的一个扫描周期；以及 Determining a first criterion for satisfying image sharpness and aspect matching by a sampled single frame image, and the adjacent single frame image of the sampled single frame satisfies a second criterion for image sharpness and aspect matching, and the sampling The scan period in which the single frame image is located is determined as one scan period that satisfies the evaluation criteria;
    查找一个扫描周期中存在多个抽样单帧图像满足图像清晰度和切面匹配度的第二判断标准，将该扫描周期确定为满足评估标准的一个扫描周期。A second criterion for finding that a plurality of sampled single-frame images satisfy the image sharpness and the aspect matching degree in one scan period is determined, and the scan period is determined as one scan period that satisfies the evaluation criteria.
  17. 一种超声成像***，其中，包括：An ultrasound imaging system, comprising:
    探头；Probe
    发射电路和接收电路，用于激励所述探头向组织目标发射超声波束，并接收所述超声波束的回波，获得回波信号；a transmitting circuit and a receiving circuit, configured to excite the probe to emit an ultrasonic beam to the tissue target, and receive an echo of the ultrasonic beam to obtain an echo signal;
    图像处理模块，用于根据所述回波信号，生成超声图像，在连续采集的超声图像中，获得触发图像位置选择的时间点，根据所述时间点，获取与所述时间点相关联的预定时间段上连续采集的多帧超声图像，形成待选超声图像库，对所述待选超声图像库中超声图像进行图像评估，获得满足图像评估标准的超声图像或电影文件；And an image processing module, configured to generate an ultrasound image according to the echo signal, obtain a time point of triggering image position selection in the continuously acquired ultrasound image, and acquire a predetermined schedule associated with the time point according to the time point The multi-frame ultrasound image continuously acquired in the time period forms an ultrasound image library to be selected, and performs image evaluation on the ultrasound image in the ultrasound image library to be selected to obtain an ultrasound image or a movie file that satisfies the image evaluation standard;
    显示器，用于显示所述超声图像或电影文件并输出。a display for displaying the ultrasound image or movie file and outputting.
  18. 根据权利要求17所述的一种超声成像***，其特征在于，所述***还包括：操作控制模块，操作控制模块包括冻结键或者存储键，根据用户点击冻结键或者存储键的操作输入指令，所述图像处理模块在所述连续采集的超声图像中选择一帧，以所选择的帧对应的位置时间作为所述时间点。The ultrasonic imaging system according to claim 17, wherein the system further comprises: an operation control module, wherein the operation control module comprises a freeze key or a storage key, and according to an operation input instruction of the user clicking a freeze key or a storage key, The image processing module selects one frame in the continuously acquired ultrasound image, and uses the position time corresponding to the selected frame as the time point.
  19. 根据权利要求17所述的一种超声成像***，其特征在于，所述图像处理模块还通过以下方式之一来形成待选超声图像库：The ultrasound imaging system according to claim 17, wherein the image processing module further forms a library of ultrasound images to be selected by one of the following methods:
    选取所述时间点之前预定时间段上连续采集的多帧超声图像，形成待选超声图像库；Selecting a plurality of frames of ultrasound images continuously acquired on a predetermined time period before the time point to form a library of ultrasound images to be selected;
    选取所述时间点之后预定时间段上连续采集的多帧超声图像，形成待选超声图像库；以及Selecting a plurality of frames of ultrasound images continuously acquired over a predetermined period of time after the time point to form a library of ultrasound images to be selected;
    选择包含所述时间点的预定时间段上连续采集的多帧超声图像，形成待选超声图像库。A plurality of frames of ultrasound images continuously acquired over a predetermined period of time including the point in time are selected to form a library of ultrasound images to be selected.
  20. 根据权利要求17所述的一种超声成像***，其特征在于，所述图像处理模块还通过以下方式之一来对所述待选超声图像库中的超声图像进行图像评估，获得满足图像评估标准的超声图像或电影文件：The ultrasound imaging system according to claim 17, wherein the image processing module further performs image evaluation on the ultrasound image in the to-be-selected ultrasound image library in one of the following manners to obtain an image evaluation standard. Ultrasound image or movie file:
    将所述待选超声图像库中的超声图像与标准切面比较，进行图像切面匹 配度判断；Comparing the ultrasonic image in the selected ultrasound image library with a standard cut surface, and performing image cut surface Degree of judgment;
    对所述待选超声图像库中的超声图像进行图像清晰度判断。Image sharpness determination is performed on the ultrasound image in the to-be-selected ultrasound image library.
  21. 根据权利要求20所述的一种超声成像***，其特征在于，所述图像处理模块还通过下述中至少一种来执行对所述待选超声图像库中的超声图像进行图像清晰度判断：The ultrasound imaging system according to claim 20, wherein the image processing module further performs image sharpness determination on the ultrasound image in the candidate ultrasound image library by at least one of:
    计算所述待选超声图像库中的超声图像或所述满足切面匹配度的每一帧超声图像以及其相邻帧超声图像的声速差异，确定所述待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像；Calculating an ultrasound image in the to-be-selected ultrasound image library or the sound velocity difference of each frame of the ultrasound image satisfying the aspect matching degree and the adjacent frame ultrasound image, and determining that the image of the candidate ultrasound image library satisfies the image clarity determination Standard one or more frames of ultrasound images;
    计算所述待选超声图像库中的超声图像或所述满足切面匹配度的每一帧超声图像以及其相邻帧超声图像的相关系数，根据所述相关系数，确定所述待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像；Calculating an ultrasound image in the to-be-selected ultrasound image library or the correlation coefficient of each frame of the ultrasound image satisfying the matching degree of the slice and the adjacent frame ultrasound image, and determining the candidate ultrasound image library according to the correlation coefficient One or more frames of ultrasound images satisfying the criteria for image sharpness determination;
    对所述待选超声图像库中的超声图像或满足切面匹配度的每一帧超声图像以及其相邻帧超声图像进行直方图匹配，确定所述待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像；Performing histogram matching on the ultrasound image in the to-be-selected ultrasound image library or each frame of the ultrasound image satisfying the matching degree of the facet and the adjacent frame ultrasound image, and determining the image clarity determination criterion in the candidate ultrasound image library One or more frames of ultrasound images;
    对所述待选超声图像库中的超声图像或满足切面匹配度的每一帧超声图像以及其相邻帧超声图像进行平均灰度值分析，确定所述待选超声图像库中满足图像清晰度判断标准的一帧或多帧超声图像。Performing an average gray value analysis on the ultrasound image in the to-be-selected ultrasound image library or each frame of the ultrasound image satisfying the aspect matching degree and the adjacent frame ultrasound image, and determining that the image clarity is satisfied in the candidate ultrasound image library A standard one or more frame ultrasound image is judged.
  22. 根据权利要求17所述的一种超声成像***，其特征在于，当所述清晰度满足要求的超声图像为一帧时，直接通过所述显示器显示并输出；当所述清晰度满足要求的超声图像为多帧时，通过显示器显示所述多帧超声图像的缩微图，图像处理模块提示用户进行选择，并根据用户的选择确定其中一帧为期望帧图像并输出。An ultrasound imaging system according to claim 17, wherein when said ultrasound image having a resolution satisfying the requirements is one frame, it is directly displayed and outputted through said display; when said resolution meets the required ultrasound When the image is a multi-frame, the thumbnail of the multi-frame ultrasound image is displayed through the display, the image processing module prompts the user to select, and determines one of the frames as the desired frame image according to the user's selection and outputs.
  23. 根据权利要求17所述的一种超声成像***，其特征在于，所述图像处理模块还通过以下方式对所述待选超声图像库中的超声图像进行图像评估，获得满足图像评估标准的超声图像或电影文件：The ultrasound imaging system according to claim 17, wherein the image processing module further performs image evaluation on the ultrasound image in the to-be-selected ultrasound image library to obtain an ultrasound image that satisfies the image evaluation standard. Or movie file:
    从待选超声图像库的多于一个扫描周期的预定时间段的连续多帧图像中进行抽样，获得多个单帧图像；Sampling from consecutive multi-frame images of a predetermined time period of more than one scan period of the ultrasound image library to be selected, obtaining a plurality of single-frame images;
    对所述多个单帧图像进行切面匹配度判断以及图像清晰度判断中的至 少一项判断；以及Performing a facet matching degree judgment on the plurality of single frame images and determining the image sharpness determination One less judgment; and
    提取满足图像评估标准的一个扫描周期内对应的连续多帧图像，形成电影文件。A corresponding continuous multi-frame image within one scan period that satisfies the image evaluation criteria is extracted to form a movie file.
  24. 根据权利要求23所述的一种超声成像***，其特征在于，所述图像处理模块还通过下述方式之一提取满足图像评估标准的一个扫描周期内对应的连续多帧图像：An ultrasound imaging system according to claim 23, wherein said image processing module further extracts a corresponding continuous multi-frame image within one scan period that satisfies the image evaluation criteria by one of:
    查找连续多个抽样单帧图像均都满足图像清晰度和切面匹配度的第一判断标准，将所述连续多个抽样单帧图像所在的扫描周期确定为满足评估标准的一个扫描周期；Finding a first criterion for satisfying image sharpness and aspect matching degree in a plurality of consecutive sampling single frame images, determining a scanning period in which the consecutive plurality of sampling single frame images are located as one scanning period satisfying an evaluation criterion;
    确定一个抽样单帧图像满足图像清晰度和切面匹配度的第一判断标准，并且所述抽样单帧的相邻抽样单帧图像满足图像清晰度和切面匹配度的第二判断标准，将该抽样单帧图像所在的扫描周期确定为满足评估标准的一个扫描周期；以及Determining a first criterion for satisfying image sharpness and aspect matching by a sampled single frame image, and the adjacent single frame image of the sampled single frame satisfies a second criterion for image sharpness and aspect matching, and the sampling The scan period in which the single frame image is located is determined as one scan period that satisfies the evaluation criteria;
    查找一个扫描周期中存在多个抽样单帧图像满足图像清晰度和切面匹配度的第二判断标准，将该扫描周期确定为满足评估标准的一个扫描周期。 A second criterion for finding that a plurality of sampled single-frame images satisfy the image sharpness and the aspect matching degree in one scan period is determined, and the scan period is determined as one scan period that satisfies the evaluation criteria.
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