Method and device for determining scanning view field and medical imaging equipment

Abstract

The invention discloses a method and device for determining a scanning view field and medical imaging equipment, and relates to the technical field of medical treatment. The medical imaging equipment can acquire the positioning images of the scanned object under multiple visual angles, acquire the positioning frame of the target part in the positioning image based on the segmentation result of the target part of the scanned object in each positioning image, and then automatically determine the scanning visual field of the target part based on the positioning frame of the target part in each positioning image. The scanning view does not need to be determined manually, so that the determination efficiency of the scanning view is effectively improved, personal errors can be reduced to a certain extent, and the determination accuracy of the scanning view is improved. Moreover, the medical imaging equipment can determine the scanning view field based on the positioning images under the plurality of different view angles, and the positioning images under the plurality of different view angles can assist with each other, so that the determination accuracy of the scanning view field can be improved.

Description

Technical Field

[0001] The present invention relates to the field of medical technology, and in particular to a method and device for determining a scanning field of view, and medical imaging equipment. Background Art

[0002] Medical imaging equipment can scan a target part of a scanned object (such as a human body) to obtain an image of the target part, which can assist doctors in diagnosis. Before scanning the target part, it is necessary to determine the scanning field of view (FOV) for the target part.

[0003] In the related art, a medical imaging device can obtain a positioning image at a certain viewing angle and display the positioning image for the doctor to observe. Then, the medical imaging device can determine the scanning field of view in response to the doctor's operation of demarcating the area where the target part is located in the positioning image. Since the scanning field of view needs to be determined manually in the related art, the method of determining the scanning field of view in the related art is less efficient. Summary of the invention

[0004] The present invention provides a method and device for determining a scanning field of view, and a medical imaging device, which can solve the problem that the scanning field of view is manually determined by a physician in the related art, resulting in a long scanning process and low scanning efficiency. The technical solution is as follows:

[0005] In one aspect, a method for determining a scanning field of view is provided, the method comprising:

[0006] Acquire positioning images of the scanned object at multiple viewing angles;

[0007] Based on the segmentation result of the target part of the scanned object in each of the positioning images, obtaining a positioning frame of the target part in the positioning image;

[0008] Based on the positioning frame of the target part in each of the positioning images, the scanning field of view of the target part is determined.

[0009] Optionally, based on the segmentation result of the target part of the scanned object in each positioning image, obtaining a positioning frame of the target part in the positioning image includes:

[0010] The boundary lines of the segmentation results in each positioning image are determined as the positioning frames of the target parts in the positioning images.

[0011] Optionally, before obtaining a positioning frame of the target part in the positioning image based on the segmentation result of the target part of the scanned object in each positioning image, the method further includes:

[0012] Each positioning image is input into the image segmentation model to obtain the segmentation result of the target part in the positioning image output by the image segmentation model.

[0013] Optionally, before inputting each of the positioning images into an image segmentation model to obtain a segmentation result of the target part in the positioning image output by the image segmentation model, the method further includes:

[0014] Acquire multiple sample data, each sample data includes sample positioning images under multiple viewing angles, and sample segmentation results of target parts in each sample positioning image;

[0015] The model is trained on multiple sample data to obtain an image segmentation model.

[0016] Optionally, determining the scanning field of view of the target part based on the positioning frame of the target part in each of the positioning images includes:

[0017] Based on the multiple positioning frames, determining a first scanning range of the target part in a first direction, a second scanning range in a second direction, and a third scanning range in a third direction;

[0018] Acquire a scanning field of view of a target part based on the first scanning range, the second scanning range, and the third scanning range;

[0019] The first direction, the second direction and the third direction are perpendicular to each other.

[0020] Optionally, the scanned object is a human body; and the multiple viewing angles include at least two of the following viewing angles:

[0021] Sagittal view, coronal view and target projection view;

[0022] The imaging plane under the target projection viewing angle intersects with the sagittal plane and the coronal plane of the scanned object respectively and is not perpendicular.

[0023] Optionally, the target site includes a spine.

[0024] On the other hand, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the method for determining the scanning field of view in the above aspect is implemented.

[0025] On the other hand, a medical imaging device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method for determining the scanning field of view described above is implemented.

[0026] In another aspect, a device for determining a scanning field of view is provided, the device comprising:

[0027] An acquisition module, used to acquire positioning images of the scanned object at multiple viewing angles;

[0028] A first determination module is used to obtain a positioning frame of the target part in the positioning image based on the segmentation result of the target part of the scanned object in each positioning image;

[0029] The second determination module is used to determine the scanning field of view of the target part based on the positioning frame of the target part in each positioning image.

[0030] In summary, the embodiments of the present invention provide a method and device for determining a scanning field of view, and a medical imaging device. The medical imaging device can obtain positioning images of a scanning object at multiple viewing angles, and based on the segmentation results of the target part of the scanning object in each positioning image, obtain the positioning frame of the target part in the positioning image, and then automatically determine the scanning field of view of the target part based on the positioning frame of the target part in each positioning image. Since there is no need to manually determine the scanning field of view, the efficiency of determining the scanning field of view is effectively improved. Moreover, since the medical imaging device can determine the scanning field of view based on the positioning images at multiple different viewing angles, the positioning images at multiple different viewing angles can assist each other, so the accuracy of determining the scanning field of view can be improved. In addition, since there is no need to manually determine the scanning field of view, human errors can be reduced to a certain extent, the accuracy of determining the scanning field of view can be improved, and the workload of doctors can be reduced, thereby effectively improving the work experience of doctors.

[0031] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a flow chart of a method for determining a scanning field of view provided by an embodiment of the present invention;

[0033] Figure 2 is a flow chart of another method for determining a scanning field of view provided by an embodiment of the present invention;

[0034] Figure 3 is a schematic diagram of a first positioning image under a sagittal viewing angle provided by an embodiment of the present invention;

[0035] Figure 4 is a schematic diagram of a second positioning image under a coronal viewing angle provided by an embodiment of the present invention;

[0036] Figure 5 is a schematic diagram of the structure of a medical imaging device provided by an embodiment of the present invention;

[0037] Figure 6It is a module diagram of a device for determining a scanning field of view provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0039] Figure 1 1 is a flow chart of a method for determining a scanning field of view provided by an embodiment of the present invention, and the method is applied to a medical imaging device. Optionally, the medical imaging device may be a computed tomography (CT) device or a magnetic resonance imaging (MRI) device. Figure 1 , the method comprising:

[0040] Step 101: Acquire positioning images of a scanned object at multiple viewing angles.

[0041] When it is necessary to determine the scanning field of view for the target part of the scanned object, the medical imaging device can obtain positioning images of the scanned object under multiple viewing angles. The scanned object can be a human body. The multiple viewing angles can include at least two of the following viewing angles: a sagittal viewing angle, a coronal viewing angle, and a target projection viewing angle. The imaging plane under the target projection viewing angle intersects with the sagittal plane and the coronal plane of the scanned object respectively and is not perpendicular. The sagittal plane is the imaging plane under the sagittal viewing angle, and the coronal plane is the imaging plane under the coronal viewing angle.

[0042] Step 102: Based on the segmentation results of the target part of the scanned object in each positioning image, a positioning frame of the target part in the positioning image is obtained.

[0043] In an embodiment of the present invention, for each positioning image in a plurality of positioning images, the medical imaging device may determine the boundary line of the segmentation result of the target part of the scanned object in the positioning image as the positioning frame of the target part in the positioning image. The target part may include the spine, or any region of the spine, and the any region may be one of the following parts: cervical spine, thoracic spine, and lumbar spine. For example, the target part may be the spine.

[0044] In an optional implementation, the medical imaging device may input each positioning image into an image segmentation model to obtain a segmentation result of the target part in each positioning image output by the image segmentation model.

[0045] In another optional implementation, the medical imaging device may process each positioning image using a threshold segmentation method to obtain a segmentation result of the target part in each positioning image.

[0046] Step 103: Determine the scanning field of view based on the positioning frames of the target parts in each positioning image.

[0047] After the medical imaging device determines two positioning frames for the target part based on the two positioning images, the scanning field of view can be determined based on the two positioning frames for the target part.

[0048] In summary, an embodiment of the present invention provides a method for determining a scanning field of view, wherein a medical imaging device can obtain positioning images of a scanning object at multiple viewing angles, and based on the segmentation results of the target part of the scanning object in each positioning image, obtain a positioning frame of the target part in the positioning image, and then automatically determine the scanning field of view of the target part based on the positioning frame of the target part in each positioning image. Since there is no need to manually determine the scanning field of view, the efficiency of determining the scanning field of view is effectively improved. Moreover, since the medical imaging device can determine the scanning field of view based on positioning images at multiple different viewing angles, the positioning images at multiple different viewing angles can assist each other, thereby improving the accuracy of determining the scanning field of view. In addition, since there is no need to manually determine the scanning field of view, human errors can be reduced to a certain extent, the accuracy of determining the scanning field of view can be improved, and the workload of doctors can be reduced, thereby effectively improving the work experience of doctors.

[0049] The embodiment of the present invention takes the segmentation results of the target parts in each positioning image obtained by the image segmentation model as an example to exemplarily illustrate the method for determining the scanning field of view provided by the embodiment of the present invention. The method can be applied to medical imaging equipment. Figure 2 , the method may include:

[0050] Step 201: Acquire positioning images of a scanned object at multiple viewing angles.

[0051] When it is necessary to determine the scanning field of view for the target part of the scanned object, the medical imaging device can obtain positioning images of the scanned object at multiple viewing angles.

[0052] The scan object may be a human body, and the multiple viewing angles may include at least two of the following viewing angles: a sagittal viewing angle, a coronal viewing angle, and a target projection viewing angle.

[0053] The imaging plane under the target projection viewing angle intersects with the sagittal plane and the coronal plane of the scanned object respectively and is not perpendicular. The sagittal plane is the imaging plane under the sagittal viewing angle, and the coronal plane is the imaging plane under the coronal viewing angle.

[0054] It is understandable that when the scanned object is a human body, the human body is usually lying flat on the scanning bed. If the medical imaging device is able to scan the human body while the human body is lying flat, then the multiple viewing angles may include: sagittal viewing angle and coronal viewing angle. However, in some special cases, such as when the human body is too obese, the human body lying flat on the scanning bed will cause the medical imaging device to be unable to scan the human body. At this time, the human body needs to lie on its side (such as: tilted 45°) so that the medical imaging device can scan the human body. Therefore, the multiple viewing angles may include: target projection viewing angle. Step 202, input each positioning image into the image segmentation model, and obtain the segmentation result of the target part output by the image segmentation model in each positioning image.

[0055] The segmentation result of the target part in each positioning image refers to: a sub-region of the target part in the positioning image. The sub-region may be the smallest circumscribed sub-region of the target part in the positioning image, such as the smallest circumscribed rectangular region. The target part may include the spine, or any region of the spine, and the any region may be one of the following parts: cervical spine, thoracic spine and lumbar spine. For example, the target part may be the spine.

[0056] In an embodiment of the present invention, before inputting multiple positioning images into an image segmentation model, the medical imaging device may first obtain multiple sample data and perform model training on the multiple sample data to obtain an image segmentation model. Each sample data includes: sample positioning images under multiple viewing angles, and sample segmentation results of target parts in each sample positioning image. When performing model training, the sample segmentation results can be used as segmentation labels.

[0057] For example, each sample data may include: a sample positioning image under a coronal perspective, a sample positioning image under a sagittal perspective, a sample segmentation result of the target part in the sample positioning image under a coronal perspective, and a sample segmentation result of the target part in the sample positioning image under a sagittal perspective.

[0058] Optionally, the sample segmentation results of the target parts in each sample positioning image may be obtained by manual annotation.

[0059] In an embodiment of the present invention, each sample data includes: segmentation results of target parts in sample positioning images under multiple different viewing angles, that is, multiple sample positioning images can display target parts under different viewing angles. As a result, the image segmentation model can identify the characteristics of the target parts under different viewing angles (such as structural information and texture information, etc.), so that the target parts under different viewing angles can be aligned (such as the corresponding relationship between the target parts under different viewing angles can be obtained). In this way, the trained image segmentation model can use the segmentation results under the first viewing angle among multiple viewing angles as an aid to segment the target parts in the positioning image under the second viewing angle when performing image segmentation, so as to more accurately identify and distinguish different anatomical structures, thereby effectively improving the reliability of the image segmentation model, so that the accuracy of the segmentation results output by the image segmentation model is higher. Among them, the first viewing angle is different from the second viewing angle.

[0060] It can be understood that the image segmentation model provided by the embodiment of the present invention can ensure that the segmentation result obtained by performing image segmentation on the positioning image at a certain viewing angle is highly accurate when the positioning image at that viewing angle is unclear, such as when the noise is relatively serious, the artifacts are relatively serious, or the target part is blocked. That is, the image segmentation model can effectively reduce the influence of the noise, artifacts, or the occlusion of the target part of the positioning image on the segmentation result of the positioning image, thereby ensuring that the accuracy of the scanning field of view automatically determined in the end is high.

[0061] Step 203: Based on the segmentation results of the target part of the scanned object in each positioning image, a positioning frame of the target part in the positioning image is obtained.

[0062] In the embodiment of the present invention, for each positioning image among the multiple positioning images, the medical imaging device may determine the boundary line of the segmentation result of the target part of the scanned object in the positioning image as the positioning frame of the target part in the positioning image.

[0063] Assuming that the target part is the thoracic spine, and the multiple perspectives include sagittal perspective and coronal perspective, the positioning images acquired by the medical imaging device include: Figure 3 The first positioning image 31 in the sagittal view is shown, and Figure 4 A second positioning image 41 is shown in the coronal perspective.

[0064] refer to Figure 3 The medical imaging device determines the positioning frame based on the segmentation result of the thoracic spine in the first positioning image 31 as follows: Figure 3 The first rectangular frame 311 in . Figure 3 The left long side A3 of the first rectangular frame 311 is Figure 3The left boundary of the segmentation result in the first rectangular frame 311 is the right boundary of the segmentation result. The upper short side A1 of the first rectangular frame 311 is the upper boundary of the segmentation result, and the lower short side A2 of the first rectangular frame 311 is the lower boundary of the segmentation result.

[0065] refer to Figure 4 The medical imaging device determines the positioning frame based on the segmentation result of the thoracic spine in the second positioning image 41 as follows: Figure 4 The second rectangular frame 411 in . Figure 4 The left long side B3 of the second rectangular frame 411 is Figure 4 The left boundary of the segmentation result in the second rectangular frame 411 is the right boundary of the segmentation result. The upper short side B1 of the second rectangular frame 411 is the upper boundary of the segmentation result, and the lower short side B2 of the second rectangular frame 411 is the lower boundary of the segmentation result.

[0066] Step 204: Determine the scanning field of view of the target part based on the positioning frame of the target part in each positioning image.

[0067] In an embodiment of the present invention, the scanning field of view may refer to a three-dimensional space area that a medical imaging device can cover during a scanning process. Based on this, the medical imaging device may determine a first scanning range of the target part in a first direction, a second scanning range in a second direction, and a third scanning range in a third direction based on the positioning frame of the target part in each positioning image in a plurality of positioning images, and then obtain the scanning field of view of the target part based on the first scanning range, the second scanning range, and the third scanning range. The first direction, the second direction, and the third direction are mutually perpendicular.

[0068] It is understandable that before determining the scanning field of view, a three-dimensional coordinate system can be established to describe the position and size of the scanning field of view. The X axis of the three-dimensional coordinate system can be parallel to the sagittal axis of the scanning object, the Y axis can be parallel to the coronal axis of the scanning object, and the Z axis can be parallel to the long axis of the scanning object.

[0069] Continuing with the target part being the thoracic spine, multiple perspectives including sagittal perspective and coronal perspective as an example, assuming that multiple positioning frames include Figure 3 The first rectangular frame 311 is shown, and Figure 4 The second rectangular frame 411 is shown. Assume that the first direction is the direction of the X axis of the three-dimensional coordinate system, the second direction is the direction of the Y axis of the three-dimensional coordinate system, and the third direction is the direction of the Z axis of the three-dimensional coordinate system.

[0070] Since the first positioning image 31 is a positioning image under the sagittal perspective, and the second positioning image 41 is a positioning image under the coronal perspective, the medical imaging device can determine the first scanning range of the target part in the first direction based on the left long side A3 and the right long side A4 of the first rectangular frame 311, and can determine the second scanning range of the target part in the second direction based on the left long side B3 and the right long side B4 of the second rectangular frame 411. And the medical imaging device can determine the third scanning range in the third direction based on the upper short side A1 and the lower short side A2 of the first rectangular frame 311, or based on the upper short side B1 and the lower short side B2 of the second rectangular frame 411.

[0071] For example, the medical imaging device can determine the lower limit of the first scanning range based on the position of the left long side A3 of the first rectangular frame 311 in the first positioning image 31, and determine the upper limit of the first scanning range based on the position of the right long side A4 of the first rectangular frame 311 in the first positioning image 31.

[0072] It can be understood that the implementation process of the medical imaging device determining the upper and lower limits of the second scanning range and the upper and lower limits of the third scanning range can refer to the relevant implementation process of determining the upper and lower limits of the first scanning range, and the embodiments of the present invention will not be repeated here.

[0073] In the embodiment of the present invention, for the third scanning range in the third direction, the medical imaging device may directly determine the third scanning range in the third direction based on the upper short side A1 and the lower short side A2 of the first rectangular frame 311. Alternatively, the medical imaging device may directly determine the third scanning range in the third direction based on the upper short side B1 and the lower short side B2 of the second rectangular frame 411. Alternatively, the medical imaging device may determine whether to determine the third scanning range in the third direction based on the first rectangular frame 311 in the first positioning image 31 or the second rectangular frame 411 in the second positioning image 41 based on the imaging quality of the sub-image of the target part in the first positioning image 31 and the second positioning image 41.

[0074] For example, assuming that during the scanning of the thoracic spine, the human body's arms are placed on the chest and abdomen, resulting in the thoracic spine being blocked, which will result in a lower imaging quality of the thoracic spine sub-image in the obtained second positioning image 41. Therefore, the medical imaging device can determine the third scanning range in the third direction based on the upper short side A1 and the lower short side A2 of the first rectangular frame 311 in the first positioning image 31. In this way, the accuracy of the obtained third scanning range can be ensured to be high.

[0075] It can be understood that, since the first positioning image is a positioning image under the sagittal perspective, and the second positioning image is a positioning image under the coronal perspective, Figure 3 and Figure 4As shown, the pixel row extension direction of the first positioning image 31 can be parallel to the X-axis, the pixel column extension direction of the first positioning image 31 can be parallel to the Z-axis, the pixel row extension direction of the second positioning image 41 can be parallel to the Y-axis, and the pixel column extension direction of the second positioning image 41 can be parallel to the Z-axis.

[0076] Step 205: Scan the target part of the scan object according to the scanning field of view of the target part.

[0077] After the medical imaging device obtains the scanning field of view of the target part, it can scan the target part of the scanned object according to the target scanning field of view.

[0078] In summary, an embodiment of the present invention provides a method for determining a scanning field of view, wherein a medical imaging device can obtain positioning images of a scanning object at multiple viewing angles, and based on the segmentation results of the target part of the scanning object in each positioning image, obtain a positioning frame of the target part in the positioning image, and then automatically determine the scanning field of view of the target part based on the positioning frame of the target part in each positioning image. Since there is no need to manually determine the scanning field of view, the efficiency of determining the scanning field of view is effectively improved. Moreover, since the medical imaging device can determine the scanning field of view based on positioning images at multiple different viewing angles, the positioning images at multiple different viewing angles can assist each other, thereby improving the accuracy of determining the scanning field of view. In addition, since there is no need to manually determine the scanning field of view, human errors can be reduced to a certain extent, the accuracy of determining the scanning field of view can be improved, and the workload of doctors can be reduced, thereby effectively improving the work experience of doctors.

[0079] An embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the above-mentioned method for determining a scanning field of view is implemented, for example Figure 1 or Figure 2 The method for determining the scanning field of view is shown.

[0080] Figure 5 is a schematic diagram of the structure of a medical imaging device provided by an embodiment of the present invention, such as Figure 5 As shown, the medical imaging device 50 may include a memory 501, a processor 502, and a computer program stored in the memory 501 and executable on the processor 502. When the processor 502 executes the computer program, the method for determining the scanning field of view shown in the above embodiment is implemented. Figure 1 or Figure 2 The method for determining the scanning field of view is shown.

[0081] Figure 6 is a module diagram of another scanning field of view determination device provided by an embodiment of the present invention, such as Figure 6 As shown, the device comprises:

[0082] The acquisition module 601 is used to acquire positioning images of the scanned object at multiple viewing angles.

[0083] The first determining module 602 is configured to obtain a positioning frame of the target part in the positioning image based on the segmentation result of the target part of the scanned object in each of the positioning images.

[0084] The second determination module 603 is used to determine the scanning field of view of the target part based on the positioning frame of the target part in each positioning image.

[0085] Optionally, the first determination module 602 is used to determine the boundary line of the segmentation result in each positioning image as the positioning frame of the target part in the positioning image.

[0086] Optional, reference Figure 6 The device may also include an image segmentation module 604, which is used to input each positioning image into the image segmentation model to obtain a segmentation result of the target part in the positioning image output by the image segmentation model.

[0087] Optional, reference Figure 6 , the device may also include a model training module 605, which is used to obtain multiple sample data, each sample data includes sample positioning images under multiple viewing angles, and sample segmentation results of target parts in each sample positioning image;

[0088] The model is trained on multiple sample data to obtain an image segmentation model.

[0089] Optionally, a second determination module 603 is used to determine a first scanning range of the target part in the first direction, a second scanning range in the second direction, and a third scanning range in the third direction based on the multiple positioning frames;

[0090] Acquire a scanning field of view of a target part based on the first scanning range, the second scanning range, and the third scanning range;

[0091] The first direction, the second direction and the third direction are perpendicular to each other.

[0092] Optionally, the scanned object is a human body; and the multiple viewing angles include at least two of the following viewing angles:

[0093] Sagittal view, coronal view and target projection view;

[0094] The imaging plane under the target projection viewing angle intersects with the sagittal plane and the coronal plane of the scanned object respectively and is not perpendicular.

[0095] Optionally, the target site includes a spine.

[0096] In summary, an embodiment of the present invention provides a device for determining a scanning field of view, wherein the medical imaging device can obtain positioning images of a scanning object at multiple viewing angles, and based on the segmentation results of the target part of the scanning object in each positioning image, obtain the positioning frame of the target part in the positioning image, and then automatically determine the scanning field of view of the target part based on the positioning frame of the target part in each positioning image. Since there is no need to manually determine the scanning field of view, the efficiency of determining the scanning field of view is effectively improved. Moreover, since the medical imaging device can determine the scanning field of view based on positioning images at multiple different viewing angles, the positioning images at multiple different viewing angles can assist each other, thereby improving the accuracy of determining the scanning field of view. In addition, since there is no need to manually determine the scanning field of view, human errors can be reduced to a certain extent, the accuracy of determining the scanning field of view can be improved, and the workload of doctors can be reduced, thereby effectively improving the work experience of doctors.

[0097] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection portion with one or more wirings (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0098] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0099] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0100] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0101] In addition, the terms "first", "second", etc. used in the embodiments of the present invention are only used for descriptive purposes and should not be understood as indicating or implying relative importance, or implicitly indicating the number of technical features indicated in the present embodiment. Therefore, the features defined by the terms "first", "second", etc. in the embodiments of the present invention can explicitly or implicitly indicate that the embodiment includes at least one of the features. In the description of the present invention, the word "multiple" means at least two or two or more, such as two, three, four, etc., unless otherwise clearly and specifically defined in the embodiments.

[0102] In the present invention, unless otherwise clearly specified or limited in the embodiments, the terms "installed", "connected", "connected" and "fixed" etc. in the embodiments should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integrated connection. It can be understood that it can also be a mechanical connection, an electrical connection, etc.; of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements, or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific implementation situation.

[0103] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0104] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A method for determining a scanning field of view, characterized in that: The method comprises: Acquire positioning images of the scanned object at multiple viewing angles; Based on the segmentation result of the target part of the scanned object in each of the positioning images, obtaining a positioning frame of the target part in the positioning image; Based on the positioning frame of the target part in each of the positioning images, the scanning field of view of the target part is determined.

2. The method according to claim 1, characterized in that Based on the segmentation results of the target part of the scanned object in each of the positioning images, obtaining a positioning frame of the target part in the positioning image includes: The boundary line of the segmentation result in each of the positioning images is determined as a positioning frame of the target part in the positioning image.

3. The method according to claim 1, characterized in that Before obtaining a positioning frame of the target part in the positioning image based on the segmentation result of the target part of the scanned object in each positioning image, the method further includes: Each of the positioning images is input into an image segmentation model to obtain a segmentation result of the target part in the positioning image output by the image segmentation model.

4. The method according to claim 3, characterized in that Before inputting each of the positioning images into an image segmentation model to obtain a segmentation result of the target part in the positioning image output by the image segmentation model, the method further includes: Acquire a plurality of sample data, each of the sample data comprising a plurality of sample positioning images under the viewing angles, and a sample segmentation result of the target part in each of the sample positioning images; Model training is performed on the multiple sample data to obtain the image segmentation model.

5. The method according to any one of claims 1 to 4, characterized in that: Determining a scanning field of view of the target part based on a positioning frame of the target part in each of the positioning images includes: Based on the plurality of positioning frames, determining a first scanning range of the target part in a first direction, a second scanning range in a second direction, and a third scanning range in a third direction; Acquire a scanning field of view of the target part based on the first scanning range, the second scanning range, and the third scanning range; The first direction, the second direction and the third direction are perpendicular to each other.

6. The method according to claim 5, characterized in that The scanning object is a human body; the multiple viewing angles include at least two of the following viewing angles: Sagittal view, coronal view and target projection view; The imaging plane under the target projection viewing angle intersects with the sagittal plane and the coronal plane of the scanned object respectively and is not perpendicular.

7. The method according to any one of claims 1 to 4, characterized in that: The target site includes the spine.

8. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and when the computer program is executed by a processor, the method for determining the scanning field of view according to any one of claims 1 to 7 is implemented.

9. A medical imaging device, characterized in that: The invention comprises a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the method for determining the scanning field of view according to any one of claims 1 to 7 is implemented.

10. A device for determining a scanning field of view, characterized in that: The device comprises: An acquisition module, used to acquire positioning images of the scanned object at multiple viewing angles; A first determination module, configured to obtain a positioning frame of the target part in the positioning image based on a segmentation result of the target part of the scanned object in each of the positioning images; The second determination module is used to determine the scanning field of view of the target part based on the positioning frame of the target part in each of the positioning images.

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