CN113520415A

CN113520415A - X-ray image acquisition method and system

Info

Publication number: CN113520415A
Application number: CN202010310854.5A
Authority: CN
Inventors: 张宇; 牛杰; 王汉禹; 冯娟; 张娜
Original assignee: Shanghai United Imaging Healthcare Co Ltd
Current assignee: Shanghai United Imaging Healthcare Co Ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2021-10-22

Abstract

The embodiment of the specification relates to an X-ray image acquisition method and system. The X-ray image acquisition method comprises the following steps: determining an X-ray source to be exposed in the array X-ray sources; controlling at least two X-ray sources of a first group in the X-ray sources to be exposed simultaneously based on the exposure area of the X-ray sources to be exposed; an X-ray image is obtained based on exposure data acquired by the detector.

Description

X-ray image acquisition method and system

Technical Field

The present application relates to medical imaging methods and systems, and more particularly, to a method and system for acquiring X-ray images.

Background

In an X-ray medical imaging product, a cold cathode of a field emission technology can be used as a radiation source, and the field emission radiation source is affected by various factors, so that the irradiation range of a single radiation source cannot completely cover the whole part to be diagnosed. Therefore, a plurality of field emission radiation sources are required to be arranged in an X-ray medical imaging product and arranged according to a certain rule. Because the multiple radiation sources are exposed in the same area at the same time to generate double images, which affects the quality of the images, the exposure is often required to be performed in a certain order in the X-ray medical imaging products. In order to improve the efficiency and shorten the scanning time in the diagnostic process, a system and a method for acquiring images are needed, which can effectively improve the image acquisition speed and the image quality.

Disclosure of Invention

An aspect of an embodiment of the present specification provides an X-ray image acquisition method, including: determining an X-ray source to be exposed in the array X-ray sources; controlling at least two X-ray sources of a first group in the X-ray sources to be exposed simultaneously based on the exposure area of the X-ray sources to be exposed; an X-ray image is obtained based on exposure data acquired by the detector.

One aspect of an embodiment of the present specification provides an X-ray image acquisition system, which includes an X-ray source to be exposed determining module, configured to determine an X-ray source to be exposed in an array X-ray source; the control module is used for controlling at least two X-ray sources of a first group in the X-ray sources to be exposed simultaneously based on the exposure area of the X-ray sources to be exposed; and the image obtaining module is used for obtaining an X-ray image based on the exposure data acquired by the detector.

An aspect of embodiments of the present specification provides an X-ray image acquisition apparatus including a processor for executing an X-ray image acquisition method.

An aspect of the embodiments of the present specification provides a computer-readable storage medium storing computer instructions, and when the computer instructions in the storage medium are read by a computer, the computer executes an X-ray image acquisition method.

An aspect of embodiments of the present specification provides an X-ray image acquisition method for imaging a region to be imaged of a patient, including: determining exposure parameters of an X-ray source to be exposed of the array X-ray source, wherein the exposure parameters comprise an exposure sequence; according to the exposure sequence, controlling the X-ray source to be exposed to sequentially expose the area to be imaged; based on the exposure data acquired by the detector, an X-ray image is obtained.

Drawings

The present application will be further explained by way of exemplary embodiments, which will be described in detail by way of the accompanying drawings. These embodiments are not intended to be limiting, and in these embodiments like numerals are used to indicate like structures, wherein:

FIG. 1 is a schematic view of an application scenario of an X-ray image acquisition system according to some embodiments of the present application;

FIG. 2 is a schematic illustration of coordinated exposures in an X-ray image acquisition system according to some embodiments of the present application;

FIG. 3 is a schematic view of an arrangement of source positions in an X-ray image acquisition system according to some embodiments of the present application;

FIG. 4 is an exemplary scene diagram of an image acquisition process of an X-ray image acquisition system according to some embodiments of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

On the contrary, this application is intended to cover any alternatives, modifications, equivalents, and alternatives that may be included within the spirit and scope of the application as defined by the appended claims. Furthermore, in the following detailed description of the present application, certain specific details are set forth in order to provide a better understanding of the present application. It will be apparent to one skilled in the art that the present application may be practiced without these specific details.

Fig. 1 is a schematic view of an application scenario of an X-ray image acquisition system according to some embodiments of the present application.

In some embodiments, the X-ray image acquisition system 100 may include: an X-ray source to be exposed determining module 110, a control module 120, a detector 130 and an image obtaining module 140. In some embodiments, the X-ray image acquisition system 100 may further include a storage device 150. In the figure, 160 denotes an object to be imaged.

The to-be-exposed X-ray source determination module 110 may be configured to determine an X-ray source to be exposed in the array X-ray sources. As shown in fig. 1, a plurality of X-ray sources 111 may be included in the array X-ray source. The X-ray source to be exposed can be part or all of the X-ray sources in the array. In some embodiments, the to-be-exposed X-ray source determination module 110 may determine one or more X-ray sources fixed as the to-be-exposed X-ray sources according to the photographed location. In some embodiments, the to-be-exposed X-ray source determination module 110 may also be used to determine image acquisition tasks. In some embodiments, the image acquisition task may at least include information of an area to be imaged, where the area to be imaged is an area of the scanned object where an image needs to be acquired. For example, the region to be imaged may be the entire breast region. For another example, the region to be imaged may be a breast. In some embodiments, the image acquisition task may further include acquiring information of the scanned object and/or information of the photographing requirement. The information of the scanned subject may include, but is not limited to, one or more of the age, sex, medical history, disease condition, tumor location, etc. of the scanned subject in combination. The information required for photographing may include a photographing angle, an exposure dose, and the like.

In some embodiments, the control module 120 may determine the number of exposures in the X-ray source to be exposed, the order of the exposures, and the like. In some embodiments, the control module 120 may determine the grouping of X-ray sources to be exposed based on an exposure area of the X-ray sources to be exposed. In particular, one or more X-ray sources whose exposure areas do not overlap may be grouped together. For example, the X-ray sources to be exposed may be divided into at least a first group and a second group. Wherein the first group may comprise at least two X-ray sources and the second group may comprise at least one X-ray source. Each of the first and second sets are exposed simultaneously and the order of exposure of the first and second sets is different. In some embodiments, the control module 120 may be further configured to control the at least two X-ray sources 111 of the first group of the X-ray sources to be exposed simultaneously based on the exposure areas of the X-ray sources to be exposed. In some embodiments, the control module 120 may control at least one X-ray source of a second group of the X-ray sources to be exposed to expose based on an exposure area of the X-ray sources to be exposed, wherein the exposures of the first and second groups are sequential. In some embodiments, the control module 120 may control the exposure of the radiation source 111 according to the image acquisition task.

The detector 130 may receive photons from different radiation sources 111 to acquire exposure data.

The image acquisition module 140 may be configured to acquire an X-ray image based on the exposure data acquired by the detector 130.

It should be understood that the system and its modules shown in FIG. 1 may be implemented in a variety of ways. For example, in some embodiments, the system and its modules may be implemented in hardware, software, or a combination of software and hardware. Wherein the hardware portion may be implemented using dedicated logic; the software portions may be stored in a memory for execution by a suitable instruction execution system, such as a microprocessor or specially designed hardware. Those skilled in the art will appreciate that the methods and systems described above may be implemented using computer executable instructions and/or embodied in processor control code, such code being provided, for example, on a carrier medium such as a diskette, CD-or DVD-ROM, a programmable memory such as read-only memory (firmware), or a data carrier such as an optical or electronic signal carrier. The system and its modules of the present application may be implemented not only by hardware circuits such as very large scale integrated circuits or gate arrays, semiconductors such as logic chips, transistors, or programmable hardware devices such as field programmable gate arrays, programmable logic devices, etc., but also by software executed by various types of processors, for example, or by a combination of the above hardware circuits and software (e.g., firmware).

In the embodiment of the present application, since the regions irradiated by the X-rays emitted by the respective radiation sources are different, the control module 120 may control at least two radiation sources whose exposure regions do not coincide with each other to simultaneously expose; the detector 130 may receive photons from different radiation sources 111 and based thereon, perform imaging. By the mode, at least two ray sources can be exposed simultaneously, so that the exposure times in the shooting process are reduced, and the shooting time is shortened. The X-ray exposure system 100 according to the present application can be applied to various apparatuses capable of emitting and detecting X-rays, including but not limited to CT, DR, X-ray machine, and the like.

In some embodiments, the array X-ray source may include at least three X-ray sources. The at least three radiation sources 111 may be spaced apart in a line parallel to a receiving surface of the detector 130 (e.g., detector). In other embodiments, at least three of the radiation sources 111 may be arranged in an array in a plane parallel to the receiving surface of the detector 130. In particular, the radiation sources 111 may be arranged in an array of various shapes, such as a circular array, a square array, or a triangular array. By arranging at least three radiation sources 111 in a straight line or in a plane, the arrangement of the radiation sources 111 may be facilitated and the exposure area of each radiation source 111 on the receiving surface of the detector 130 may be more easily and accurately determined. In some alternative embodiments, the at least three radiation sources 111 may also be arranged on a curved surface or the like.

It should be noted that, a person skilled in the art can select the number of the arranged radiation sources 111 or the number of the radiation sources 111 to be exposed according to the actual imaging requirement. For example, when the range of required irradiation is larger, the number of radiation sources 111 may be increased, and vice versa, the number of radiation sources 111 may be decreased. In some embodiments, the number of radiation sources 111 may be 3, 4, 5, 9, etc., which is not further limited in this application.

In some embodiments, the X-ray imaging system 100 may also include a memory 150. The memory 150 may be used to store information/data related to the X-ray image acquisition process. For example, the memory 150 may store medical images obtained by the image obtaining module 140. In some embodiments, memory 150 may store data and/or instructions for execution by control module 120, which control module 120 may perform or use the example methods of this specification. In some embodiments, the storage device may include mass storage, removable storage, volatile read-write memory, read-only memory (ROM), and the like, or any combination thereof.

In some embodiments, the X-ray image acquisition system 100 may further include a network (not shown). The network may be a Local Area Network (LAN), Wide Area Network (WAN), public network, private network, proprietary network, Public Switched Telephone Network (PSTN), the internet, a virtual network, a metropolitan area network, a telephone network, etc., or a combination of multiple. In some embodiments, the X-ray image acquisition system 100 may be a fully digital mammography (FFDM) system or a Digital Breast Tomosynthesis (DBT) system. In some embodiments, the communication among the to-be-exposed X-ray source determination module 110, the control module 120, the detector 130, the image acquisition module 140, and the storage device 150 may be implemented by a wired connection, a wireless connection, or a combination of the above.

The above description is intended to be illustrative, and not to limit the scope of the disclosure. Many alternatives, modifications, and variations will be apparent to those skilled in the art. The features, structures, methods, and other characteristics of the exemplary embodiments described herein may be combined in various ways to obtain additional and/or alternative exemplary embodiments. For example, the memory 150 may be a data store comprising a cloud computing platform (e.g., public, private, social, and hybrid clouds, etc.). However, such changes and modifications do not depart from the scope of the present disclosure.

FIG. 2 is a schematic illustration of an exposure process in an X-ray image acquisition system according to some embodiments of the present application, and the exposure process will be described in detail with reference to FIG. 2. In the figure, an exposure area 210 is an irradiation range of one

radiation source

111, 160 is an object to be imaged, and 130 is a detector. As shown in fig. 2, the exposure areas 210 of the plurality of radiation sources 111 collectively cover the object 160 to be imaged. By such an arrangement, it can be ensured that the object 160 to be imaged can be irradiated by X-rays emitted by the one or more radiation sources 111.

In some embodiments, the to-be-exposed X-ray source determination module 110 may acquire information of the area to be imaged. The control module 120 can determine the number and the position of the radiation sources 111 for exposure according to the information of the region to be imaged. For example, after determining the region of the scanning object where the image needs to be acquired, the control module 120 may set the number of exposures of the radiation source 111 according to the region. For another example, the control module 120 may determine the sequence and combination of exposures of the respective radiation sources 111 according to the number and positions of exposures of the radiation sources 111.

In some embodiments, the radiation source may be of various types, such as a hot cathode emission radiation source, a cold cathode emission radiation source, a field emission radiation source, and the like, as well as combinations thereof. Preferably, a field emission radiation source may be used as the radiation source described in this specification. The field emission ray source is a quantum effect in which free electrons in metal escape from the surface of metal through a potential barrier under the action of a strong electric field, and electrons can be generated without heating. The field emission can enable various materials (such as metal needle tips, carbon nano tubes and the like) to generate electron emission at normal temperature to obtain electron beams, and the field emission has the obvious advantages of high starting/stopping speed, energy conservation, no need of heat dissipation and the like.

The mode that multiple ray sources expose simultaneously that the X-ray image acquisition method in this application adopted for a plurality of ray sources that the irradiation region does not overlap expose simultaneously on the detector, then read out the image data of the position diagnosed simultaneously after a plurality of regions have accepted the numerical value on the detector, can shorten the time of accomplishing the image and obtaining the task greatly like this, improve diagnostic efficiency, also can reduce and cause by the diagnostician in the image acquisition in-process body and by the movement of the position diagnosed, and reduce the possibility that produces the motion artifact.

In the embodiment shown in fig. 2, simultaneous exposure of multiple radiation sources may be used.

In some embodiments, multiple radiation sources may be exposed simultaneously to acquire all exposure images of the region to be imaged, and the radiation source for each exposure may be a group of radiation sources. For example, 11, 12, 13, 21, 22, 23, 31, 32, 33 in fig. 2 represent exposure areas of different radiation sources, respectively, and optionally two different areas thereof, there are two possibilities of coincidence and non-coincidence of the two areas. Taking region 11 as an example, region 11 overlaps with region 12 and region 21, but does not overlap with other regions (e.g., regions 22 and 23).

By properly arranging the exposure mode, at least one exposure can be carried out by a radiation source with at least two non-coincident exposure areas. As shown in FIG. 2, the exposure sources can be divided into two groups, and the exposures of the two groups of sources are sequential. For example, the

radiation sources

11, 13, 22, 31, 33 may be a group a, the number of the radiation sources in the group is 5, and the exposure ranges of the 5 radiation sources in the group are not overlapped with each other; the

radiation sources

12, 21, 23, 32 may be B groups, the number of the radiation sources in this group is 4, and the exposure ranges of the 4 radiation sources in this group are not overlapped with each other. In some embodiments, the exposure order of at least two sets of radiation sources may be determined by control module 120. For example, the group A sources may be exposed first. The exposure can also be performed by the B group ray source firstly.

It should be noted that, on the basis of the present application, those skilled in the art can make various reasonable changes to the technical solution of the present application. For example, the combination of the radiation sources may be varied. For example, the combination of radiation source exposures shown in FIG. 2 can be three groups (radiation sources 11, 13), (

radiation sources

22, 31, 33), and (

radiation sources

12, 21, 23, 32); there may be 5 groups (source 11), (sources 22, 13), (sources 31, 33), (sources 12, 21) and (sources 23, 32). Such variations are intended to be within the scope of the present application. In some embodiments, a set of radiation sources may be exposed simultaneously.

The ray sources with at least two non-coincident exposure areas are used for simultaneous exposure, so that the coincidence of areas to be imaged can be avoided, artifacts are avoided, the times of X-ray exposure during image acquisition are reduced, and the time for image acquisition is shortened.

FIG. 3 is a schematic diagram of an arrangement of source positions in an X-ray image acquisition system according to some embodiments of the present application.

As shown in fig. 3, 311, 312, 313, 321, 322, 323, 331, 332, 333 represent other different array radiation sources, respectively. In some embodiments, the X-ray exposure method may be performed by at least two non-adjacent radiation sources. Non-adjacent means that there are other sources of radiation that are at a distance from at least one of the at least two sources of radiation that is less than the distance between any two of the at least two sources of radiation. Taking the radiation source 311 as an example, in fig. 3, the radiation source 311 and the radiation source 322 are two non-adjacent radiation sources, and the radiation source 312 is a radiation source that does not participate in the exposure; source 312 to source 311 is a distance D1 and source 311 to source 322 is a distance D2. If D1 is less than D2, then source 311 may be said to not be adjacent to source 322.

Exposure by non-adjacent ray sources can reduce the overlapped part of the exposure areas of different ray sources in the same exposure, thereby reducing the generation of artifacts. In some embodiments, the exposure sequence may be arranged in various ways such that exposures are made by non-adjacent radiation sources. For example, the radiation sources may be used at intervals such that non-adjacent radiation sources are exposed simultaneously. By intermittently using radiation sources is meant that at least one of said exposures is performed by at least two non-adjacent radiation sources. For example, as shown in FIG. 3,

sources

311, 313 are spaced apart by source 312; as another example, radiation sources 322 are spaced apart from

radiation sources

313, 331. This approach is similar to the previously described arrangement of sources where the regions do not coincide, except that it is defined primarily from the location of the source, and the previously described approach is defined primarily from the region of the source to be imaged.

The method shown in fig. 2 and 3 is a different limitation on the ray source arrangement, and it should be noted that the method shown in fig. 2 and 3 is only an example and does not constitute a limitation of the present application.

In some embodiments, the X-ray image acquisition system 100 may determine exposure parameters of the X-ray sources to be exposed of the array of X-ray sources based on the acquired information of the patient and/or the information required for the imaging. In some embodiments, the exposure parameters of the X-ray source to be exposed comprise an exposure sequence. The X-ray image acquisition system 100 can control the X-ray source to be exposed to sequentially expose the region to be imaged based on the exposure sequence, thereby obtaining an X-ray image. In some embodiments, the radiation source used in the X-ray image acquisition system 100 may be various, such as a hot cathode emission radiation source, a cold cathode emission radiation source, a field emission radiation source, and the like, and combinations thereof. Preferably, a cold cathode emission radiation source may be used as the radiation source described in this embodiment.

In some embodiments, the exposure parameters of the X-ray source to be exposed may further include one or more of the following: A) determining the number of times of exposure of a region to be imaged and a ray source required to be used for each exposure; B) the exposure intensity and/or exposure time of the radiation source in each exposure is determined.

In some embodiments, determining the number of exposures required for the area to be imaged and the radiation source required to be used for each exposure may include: determining the ray source and position information required for obtaining a complete image of a region to be imaged according to the size, shape and position of each ray source exposure region; determining the exposure times required in the exposure process according to the required ray source and the position information thereof; the radiation source used for each exposure is determined. Wherein the exposure sequence in each exposure may be set such that the exposure data of the X-ray sources to be exposed in a single exposure are non-coincident.

In some embodiments, determining the exposure intensity and/or exposure time of the radiation source in each exposure comprises: the exposure intensity and/or exposure time of the radiation source in each exposure may be determined for the patient's information and/or the imaging requirements. For example, the exposure may be performed with different exposure intensities for different regions of the diagnostic region, or with different exposure times for different regions of the diagnostic region. For example, for a region where the diagnostic portion is thick, the exposure intensity may be increased and/or the exposure time may be extended as appropriate to improve the sharpness of the taken image. As another example, the patient may be required to perform a minimum amount of exposure, which may be appropriate to reduce the intensity of the exposure and/or shorten the exposure time while ensuring that the picture is clear.

In some embodiments, the X-ray sources to be exposed may comprise at least a first group comprising at least two X-ray sources and a second group comprising at least one X-ray source; wherein each of the first and second sets are exposed simultaneously and the exposure order of the first and second sets is different. The arrangement of the specific groups of X-ray sources to be exposed can be seen from the corresponding description of the embodiment in fig. 2, and will not be described in detail here.

In some embodiments, information about the patient and/or information about the imaging requirements may be acquired when determining the image acquisition task. Such as the patient's age, height, weight, medical history, degree of fat or thin, site thickness, skeletal joint point information, and diagnostic requirements. In some embodiments, the information may also be obtained by direct entry, retrieval of the patient's profile from a database, or other means. For example, the above information may be acquired based on a 3D camera (which may also be referred to as a depth camera), and then the posture information of the patient is acquired based on the image information of the patient.

In some embodiments, the to-be-exposed X-ray source determination module 110 may divide the to-be-imaged region of the patient, and after the division, may further determine: the position, size and shape of each part of the region to be imaged; and the number of the divided partial to-be-imaged areas. In some embodiments, the to-be-exposed X-ray source determining module 110 may determine the number of times that the X-ray source participates in exposure according to the number of the partial to-be-imaged regions; the number and the positions of the ray sources used for each exposure can be determined according to the position, the size and the shape of each part of the region to be imaged. Specifically, the to-be-exposed X-ray source determination module 110 may divide the to-be-imaged area into different exposure levels. For example, the region to be imaged may be divided into an emphasized region to be imaged and a sub-emphasized region to be imaged. During exposure, the exposure intensity can be properly improved and/or the exposure time can be prolonged aiming at the key area to be imaged so as to improve the definition of a shot image; lower exposure intensities are used for the areas to be imaged for the secondary emphasis and/or the exposure time is reduced to reduce the exposure dose.

In some embodiments, the to-be-exposed X-ray source determination module 110 may also be configured to pre-expose the area to be imaged. The pre-exposure refers to exposing the area to be imaged by using lower exposure intensity so as to further determine the area to be imaged, which needs to be exposed in a focused manner, in the part to be diagnosed of the patient. In some embodiments, the to-be-exposed X-ray source determination module may also be used to determine the importance of each portion of the area to be imaged. The to-be-exposed X-ray source determining module 110 may determine the number of times the X-ray source participates in exposure according to the importance of the to-be-imaged region; the number and the positions of the ray sources used for each exposure can be determined according to the position, the size and the shape of each part of the region to be imaged.

In some embodiments, the methods of the present description may be used to acquire breast images, one example of which is provided in fig. 4.

As shown in fig. 4, 4100 is a front view of the breast imaging apparatus, and 4200 is a top view of the breast imaging apparatus. In the figure, 410 denotes a first region, 420 denotes a second region, 160 denotes a breast to be imaged, and 430 denotes a breast compression plate. As shown in fig. 4, the breast 160 is disposed within the second region 420. The breast compression plate 430 covers the top of the breast 160 and serves to compress the breast further from the source and closer to the detector, thereby improving the signal-to-noise ratio of the acquired image. Meanwhile, due to the structural characteristics of the breast, the shape of the breast is a conical structure under natural conditions, and the breast compression plate 430 can make the height of the breast in the vertical direction even, so that the gray level of the acquired image is more uniform.

When acquiring X-ray images, the human body stands on the side of the first region 410, the chest is tightly attached to the first region, and the outer side of the chest wall faces the second region 420. The chest wall is a region formed by sternum, ribs and human tissues among the ribs, the inner side of the chest wall is a chest cavity, and tissues and organs such as heart, lung, spleen, pancreas and the like are arranged in the chest cavity; the outside of the chest wall is the pectoral muscle of the human body and the mammary gland and breast of the female. During the process of acquiring the mammary gland image, the X-ray is prevented from penetrating through the breast wall to irradiate tissues and organs in the breast wall as much as possible.

In some embodiments, the sources in the second region 420 may be linearly arranged. In some embodiments, the sources in the second region 420 may also be arrayed in a plane. In particular, the radiation sources in the second region 420 may be arranged in a variety of regularly shaped arrays, such as circular arrays, square arrays, triangular arrays, or the like. By providing the radiation sources in the second region 420 as a regular shaped array, the arrangement of the radiation sources can be facilitated and the irradiation region of the radiation sources can be determined more easily and accurately. In alternative embodiments, the sources in the second region 420 may also be arranged on a curved surface, or the like.

The sources in the first region 410 may be arranged in a linear fashion. In some embodiments, the sources in the first region 410 may also be linearly arranged in a non-linear manner. For example, it may be specifically set in conjunction with the shape of the breast wall of the person to be diagnosed.

In some embodiments, the arrangement density of the radiation sources in the first region 410 in the direction parallel to the breast wall may be higher than the arrangement density of the radiation sources in the second region 420 in the direction parallel to the breast wall. The density of human tissues close to the chest wall side of the human body is higher, and the arrangement density of the ray sources is increased, so that the definition of finally obtained images can be improved.

In some embodiments, the irradiation direction of the radiation sources in the first region 410 may be deflected to an angle perpendicular to the outer side of the breast wall of the diagnosed person, and the X-rays emitted by the radiation sources after the deflection of the angle do not pass through the breast wall of the diagnosed person.

In some embodiments, after the images are acquired by exposure, the images may be reconstructed and stitched. In some embodiments, the X-ray image acquisition method includes reconstructing an image. The reconstructed image is an image reconstruction based on exposure data of one or more X-ray sources acquired in one or more exposures. In some embodiments, the image reconstruction process may be performed by the image acquisition module 140. After the reconstructed images are obtained, the image obtaining module 140 may further stitch the reconstructed images obtained by the respective radiation sources in one or more exposures. In some embodiments, during stitching, the image obtaining module 140 may perform distortion adjustment, color adjustment, and/or gray scale adjustment according to a corresponding position relationship between the array X-ray source and the region to be imaged, and further determine the scanned image of the region to be imaged by a method such as synthesis or three-dimensional image reconstruction. Three-dimensional image reconstruction methods may include, but are not limited to, algebraic methods, iterative methods, fourier transform methods, convolution backprojection methods, and the like.

For example only, the image obtaining module 140 may select at least one of the one or more scanned images as a reference scanned image during stitching; arranging the obtained images according to the position relationship between the array X-ray sources and the corresponding areas to be imaged; respectively extracting non-overlapping parts in one or more scanning images; deleting the non-reference scanned image of the overlapped part; and splicing the non-overlapping part and the overlapping part to obtain a complete image of the diagnosis part after splicing.

The beneficial effects that the multi-point linkage exposure control system based on the surface light source disclosed by the application can bring include but are not limited to: (1) the speed of image acquisition is increased; (2) the quality of the obtained image is improved; (3) the experience in the diagnosis process is improved; (4) the amount of radiation of the diagnosed person is reduced. It is to be noted that different embodiments may produce different advantages, and in different embodiments, any one or combination of the above advantages may be produced, or any other advantages may be obtained.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims

1. An X-ray image acquisition method, comprising:

determining an X-ray source to be exposed in the array X-ray sources;

controlling at least two X-ray sources of a first group in the X-ray sources to be exposed simultaneously based on the exposure area of the X-ray sources to be exposed;

an X-ray image is obtained based on exposure data acquired by the detector.

2. The X-ray image acquisition method as set forth in claim 1, further comprising:

and controlling at least one X-ray source of a second group in the X-ray sources to be exposed to expose based on the exposure area of the X-ray sources to be exposed, wherein the exposure of the first group and the second group is sequential.

3. The X-ray image acquisition method of claim 1, wherein the exposure areas of the at least two X-ray sources exposed simultaneously do not overlap.

4. The X-ray image acquisition method according to claim 1,

the at least two X-ray sources exposed simultaneously are not adjacent, the non-adjacent means that other X-ray sources exist in the array X-ray sources, and the distance between the X-ray sources and at least one of the at least two X-ray sources is smaller than the distance between any two of the at least two X-ray sources.

5. The X-ray image acquisition method according to claim 1, wherein the X-ray image acquisition method is used for acquiring a breast image;

the array X-ray sources are distributed in a first area and a second area;

the first area is positioned on one side of a breast wall, and the X-ray sources are linearly arranged in the first area;

the X-ray sources are arranged linearly or planarly in the second region.

6. The X-ray image acquisition method as set forth in claim 1, wherein the obtaining an X-ray image based on the exposure data acquired by the detector comprises:

performing image reconstruction based on exposure data of one or more X-ray sources acquired in one or more exposures;

and performing image splicing on the reconstructed image data based on the exposure area corresponding to each ray source.

7. The X-ray image acquisition method as set forth in claim 1, further comprising: determining an image acquisition task, wherein the image acquisition task comprises information of an area to be imaged, and the area to be imaged is an area needing to acquire an image in a scanned object;

the method for determining the X-ray source to be exposed in the array X-ray source comprises the following steps:

and determining an X-ray source to be exposed in the array X-ray sources based on the area to be imaged.

8. The X-ray image acquisition method according to claim 7, wherein the image acquisition task further includes information of a scanning subject and/or information of a photographing requirement; the X-ray image acquisition method further comprises:

and determining the exposure intensity of the X-ray source to be exposed according to the information of the scanning object and/or the information of the shooting requirement.

9. An X-ray image acquisition system, the system comprising:

the X-ray source to be exposed determining module is used for determining the X-ray source to be exposed in the array X-ray sources;

the control module is used for controlling at least two X-ray sources of a first group in the X-ray sources to be exposed simultaneously based on the exposure area of the X-ray sources to be exposed;

and the image obtaining module is used for obtaining an X-ray image based on the exposure data acquired by the detector.

10. An X-ray image acquisition apparatus comprising a processor, wherein the processor is configured to perform the X-ray image acquisition method according to any one of claims 1 to 8.

11. A computer-readable storage medium storing computer instructions, wherein when the computer instructions in the storage medium are read by a computer, the computer executes the X-ray image acquisition method according to any one of claims 1 to 8.

12. An X-ray image acquisition method for imaging a region to be imaged of a patient, comprising:

determining exposure parameters of an X-ray source to be exposed of the array X-ray source, wherein the exposure parameters comprise an exposure sequence;

according to the exposure sequence, controlling the X-ray source to be exposed to sequentially expose the area to be imaged;

based on the exposure data acquired by the detector, an X-ray image is obtained.

13. The method of claim 12, wherein said exposure parameters further comprise exposure times, exposure time and/or exposure intensity.

14. The method of claim 12, wherein the array X-ray source is a cold cathode X-ray source.

15. The X-ray image acquisition method according to claim 12, wherein the region to be imaged is a breast.

16. The X-ray image acquisition method of claim 12, wherein the exposure sequence in a single exposure is set such that the exposure data of the X-ray sources to be exposed in a single exposure are non-coincident.

17. The X-ray image acquisition method of claim 12 wherein the X-ray sources to be exposed comprise a first group and a second group, wherein the first group comprises at least two X-ray sources and the second group comprises at least one X-ray source, wherein each of the first and second groups are exposed simultaneously and the exposure order of the first and second groups is different.