CN114469152A - DSA-based medical CT machine enhanced scanning monitoring method, storage medium and terminal - Google Patents
DSA-based medical CT machine enhanced scanning monitoring method, storage medium and terminal Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 37
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- 238000004590 computer program Methods 0.000 claims description 12
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Abstract
The embodiment of the invention discloses a DSA-based enhanced scanning monitoring method for a medical CT machine, a storage medium and a terminal. The invention discloses a DSA-based medical CT machine enhanced scanning monitoring method, which comprises the following steps: s1, acquiring the position information of the bolus detection position; s2, acquiring projection diagram information of the ray source at the bolus detection position for multiple times; s3, generating scanning detection data according to the projection diagram information of the ray source; and S4, generating a monitoring result time curve graph according to the scanning detection data. The DSA-based medical CT machine enhanced scanning monitoring method can effectively reduce the useless radiation quantity of a patient, and provides accurate and effective scanning results for doctors.
Description
Technical Field
The embodiment of the invention relates to the technical field of CT detection, in particular to a DSA-based medical CT machine enhanced scanning monitoring method, a storage medium and a terminal.
Background
Enhanced scanning is a core technology on a medical CT machine, and the conventional enhanced scanning generally adopts a small dose to carry out testability bolus scanning and adopts a bolus tracking technology to image contrast agents. The technique adopts a multi-temporal scanning scheme, and for a patient, the patient can bear extra radiation dose and is harmful to the body because the patient respectively scans at different moments and the scanning result is possibly useless for the medical diagnosis result.
Disclosure of Invention
The embodiment of the invention provides a DSA-based enhanced scanning monitoring method for a medical CT machine, a storage medium and a terminal, aiming at the problems, the method can effectively reduce the useless radiation quantity of a patient, and provide accurate and effective scanning results for doctors.
The invention provides a DSA-based medical CT machine enhanced scanning monitoring method, which comprises the following steps:
s1, acquiring the position information of the bolus detection position;
s2, acquiring projection diagram information of the ray source at the bolus detection position for multiple times;
s3, generating scanning detection data according to the projection diagram information of the ray source;
and S4, generating a monitoring result time curve graph according to the scanning detection data.
By adopting the technical scheme, compared with the traditional enhanced scanning technology, the CT scanning does not need to be carried out continuously for a long time, the experience of a doctor does not need to be relied on, and more accurate and abundant information is provided for the doctor to carry out medical diagnosis on the premise of reducing the CT radiation dose received by the user and reducing the experience requirement of the doctor.
Optionally, step S2 specifically includes the following steps:
s201, shooting and acquiring first projection data and second projection data of a ray source at the positive position and the lateral position of the bolus detection position respectively;
s202, generating projection graph information of the ray source according to the first projection data and the second projection data.
Optionally, the first projection data and the second projection data are obtained for simultaneous shooting.
By adopting the technical scheme, the amount of information contained in the obtained projection diagram information of the ray source is more, and the subsequent data processing and judgment can be more accurate.
Optionally, after step S4, the method further includes:
and S5, generating a contrast agent dynamic display image according to the scanning detection data.
By adopting the technical scheme, the generated scanning detection data and the three-dimensional image generation technology are utilized to dynamically display the motion dynamics of the contrast agent and display the affected part, so that a user can conveniently and visually observe the contrast agent, and the observation efficiency and accuracy are improved.
Optionally, step S4 is followed by:
and S6, generating reminding information according to the scanning detection data.
By adopting the technical scheme, the doctor can be reminded of the optimal imaging time, so that the doctor can conveniently observe at the optimal observation time, or the image data of the optimal observation time is provided for the doctor.
The invention provides a computer readable storage medium, which stores a computer program, wherein the computer program is executed by a processor to implement the aforementioned method for enhanced scan monitoring of a medical CT machine.
The invention provides a terminal device, which comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, and is characterized in that the processor implements the medical CT machine enhanced scanning monitoring method when executing the computer program.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart of a DSA-based enhanced scanning monitoring method for a medical CT machine according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the drawings for convenience in describing and simplifying the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication connection; either directly or indirectly through intervening media, either internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Enhanced scanning is one of the CT techniques, in which a drug is injected into a blood vessel from a vein (typically, the antecubital vein) while CT scanning is performed on the blood vessel. The method has the advantages that the undiscovered focus is found in a flat scan (scanning without injecting medicine into the blood vessel), and the method is mainly used for identifying whether the lesion is vascular or nonvascular, determining the relation between the mediastinal lesion and the great blood vessel of the heart and knowing the blood supply condition of the lesion so as to help identify benign and malignant lesions and the like. The ultimate goal is to increase the information content of the lesion to facilitate qualitative analysis or even definitive diagnosis of the lesion. However, the conventional CT scan at present requires the patient to eat more useless CT radiometers, and the similar delayed CT scan requires the user to estimate how long a time is after an injection according to experience, and the target organ is scanned to grasp the phase to be photographed, and the scheme depends heavily on the experience of the technician.
Meanwhile, angiography is generally called Digital Subtraction Angiography (DSA), which is a powerful technique for processing digitized image information by a computer to remove bone and soft tissue images and clearly visualize blood vessels. Angiography is an important diagnostic method in clinic, plays an irreplaceable role in interventional therapy, and is widely applied to diagnosis and treatment of head and neck and central nervous system diseases, cardiac macrovascular diseases, tumors and peripheral vascular diseases. As DSA technology is incomparable with other inspection means in the aspects of image quality, blood flow direction judgment, superior blood supply and the like.
Based on the above, the applicant has invented a medical CT machine enhanced scanning monitoring method using DSA technology, using small dose of test bolus and intermittent scanning, so as to provide the doctor with the optimal CT detection time and obtain the optimal detection result, and at the same time, minimize the useless radiation to the user.
As shown in fig. 1, the present invention provides a medical CT machine enhanced scanning monitoring method based on DSA, which comprises the following steps:
and S1, acquiring the position information of the bolus detection position.
Note that the bolus detection position in step S1 is generally a partial region and a neighboring region of the blood vessel. The method for acquiring the position information of the bolus detection position can be that a camera is used for photographing the injection position, then an obvious region where the blood vessel is located is identified, the region is used as a detection target region, and the detection target region is the bolus detection position; it is also possible to manually pre-establish a region of standard size, which is placed with the blood vessel as the center, and use the region boundary as the boundary of the bolus detection location. It should be noted that the bolus detection location does not necessarily include the injection location, i.e., the injection location may be outside or within the area of the bolus detection location. Aiming at the bolus detection position, a plane area formed by a regular polygon or a closed curve can be established, and the range of the plane area can be represented by a function phi (x, y); a spatial extent of the solid space, which may be represented by a function Ω (x, y, z), may also be established for the bolus detection position.
And S2, acquiring projection view information of the ray source at the bolus detection position for multiple times.
In this step, the CT apparatus is used to acquire the projection map information of the radiation source generated by the radiation source at the bolus detection position a plurality of times with the bolus detection position as the detection region, where the plurality of times are set by the system, or manually set by the operator according to the actual situation. This step is performed by the CT device and the acquired projection view information of the radiation source is called for in the following steps.
And S3, generating scanning detection data according to the projection diagram information of the radiation source.
In this step, the radiation source projection view information is used to generate scan detection data. In this step, not only the DSA technique but also an image information processing technique in the related art is used, and for example, the radiation source projection image information is recognized by image gradation, and the scan detection data is constructed using the gradation value information. The generated scan detection data information includes: contrast agent images of the bolus detection position at different moments and focus information of the to-be-detected part of the patient reflected under the action of the contrast agent.
And S4, generating a monitoring result time curve graph according to the scanning detection data.
In this step, a dynamic change process of the contrast agent dose changing with time and a numerical change curve of the image data relating to the lesion site of the patient reflected by the contrast agent are generated using the generated scan detection data.
It can be seen that in this technical solution, compared with the existing traditional enhanced scanning technology, there is no need to perform a long-time and continuous CT scan until a qualified source projection image that can be used for medical diagnosis is generated, and only a short CT scan is performed at different times (for example, every 10 milliseconds) to generate projection image information of multiple sources, and compared with the existing delayed scanning technology, there is no need to rely on the experience of a doctor. Through the ray source projection image information of a plurality of different moments, the DSA technology and the existing image processing technology are utilized to process the ray source projection image information to obtain scanning detection data, and then a monitoring result time curve graph is generated, so that on the premise of reducing the CT radiation dose received by a user and reducing the experience requirements of doctors, more accurate and rich information is provided for the doctors to make medical diagnosis.
Optionally, step S2 specifically includes the following steps:
s201, shooting and acquiring first projection data and second projection data of a ray source at the positive position and the lateral position of the bolus detection position respectively.
It should be noted that the normal position is shot in a direction perpendicular to the center position of the bolus detection position, and the lateral position is shot in a direction forming a certain angle with the vertical direction at the edge of the bolus detection position. The first projection data and the second projection data are data sets captured at a positive position and a lateral position, respectively.
S202, generating projection graph information of the ray source according to the first projection data and the second projection data.
In this step, the ray source projection map information is generated by using ray source projection information obtained from two different azimuth shooting angles, which belongs to the prior art. The generated projection view information of the ray source can be planar or stereo, and the latter needs to integrate the first projection data and the second projection data by combining the spatial position relations of the right position and the lateral position, such as shooting angles, intervals and the like.
By adopting the technical scheme, the obtained projection diagram information of the ray source contains more information, and the subsequent data processing and judgment can be more accurate.
Optionally, the first projection data and the second projection data are obtained for simultaneous shooting.
By adopting the technical scheme, the data obtained by the first projection data and the second projection data can be mutually verified and supplemented, so that the obtained projection diagram information of the ray source is more accurate and perfect.
Optionally, after step S4, the method further includes:
and S5, generating a contrast agent dynamic display image according to the scanning detection data.
In the step, the generated scanning detection data is utilized, the three-dimensional image generation technology is utilized, the motion dynamics of the contrast agent is dynamically displayed, and the affected part is displayed, so that a user can conveniently and visually observe the affected part, and the observation efficiency and accuracy are improved.
Optionally, step S4 is followed by:
and S6, generating reminding information according to the scanning detection data.
In this step, the user can set different contrast agent density values according to different affected parts in the system, and remind the doctor of the optimal imaging time by detecting the density value of the contrast agent, so that the doctor can conveniently observe at the optimal observation time, or provide image data of the optimal observation time for the doctor.
In addition, when the above-described processes in the embodiments are implemented in the form of software functional units and sold or used as independent products, they may be stored in a computer-readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer-readable medium may contain suitable additions or subtractions depending on the requirements of legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer-readable media may not include electrical carrier signals or telecommunication signals in accordance with legislation and patent practice.
In the present invention, unless otherwise explicitly specified or limited, the first feature "on" or "under" the second feature may be directly contacting the first feature and the second feature or indirectly contacting the first feature and the second feature through an intermediate.
Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lower level than the second feature.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A DSA-based medical CT machine enhanced scanning monitoring method is characterized by comprising the following steps:
s1, acquiring the position information of the bolus detection position;
s2, acquiring projection diagram information of the ray source at the bolus detection position for multiple times;
s3, generating scanning detection data according to the projection diagram information of the ray source;
and S4, generating a monitoring result time curve graph according to the scanning detection data.
2. The medical CT machine enhanced scan monitoring method of claim 1, wherein the step S2 specifically comprises the steps of:
s201, shooting and acquiring first projection data and second projection data of a ray source at the positive position and the lateral position of the bolus detection position respectively;
s202, generating projection graph information of the ray source according to the first projection data and the second projection data.
3. The medical CT machine enhanced scan monitoring method of claim 2, wherein the first projection data and the second projection data are obtained for simultaneous acquisitions.
4. The medical CT machine enhanced scan monitoring method of claim 3, further comprising, after step S4:
and S5, generating a contrast agent dynamic display image according to the scanning detection data.
5. The medical CT machine enhanced scan monitoring method of any one of claims 1-4, further comprising, after step S4:
and S6, generating reminding information according to the scanning detection data.
6. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out a medical CT machine enhanced scan monitoring method according to any one of claims 1 to 5.
7. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the medical CT machine enhanced scan monitoring method according to any one of claims 1 to 5 when executing the computer program.
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| DE102011083703A1 (en) * | 2011-09-29 | 2013-04-04 | Siemens Aktiengesellschaft | Method for capturing images for image data set of digital subtraction angiography and perfusion data set involves simultaneously receiving time series images and projection images using biplane X-ray device |
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