Image acquisition method and device for C-arm X-ray equipment and C-arm X-ray equipment

Abstract

The invention relates to the technical field of medical imaging, and discloses an image acquisition method and device for C-arm X-ray equipment and the C-arm X-ray equipment, and the image acquisition method comprises the steps: determining a target direction in which a scanning view needs to be enlarged under a target rack position according to a to-be-scanned area; based on the target direction, the contour of the to-be-scanned area and the scanning view field of the rack, determining a target motion track of the rack; wherein under the target movement track, the scanning view field of the rack covers the to-be-scanned area; and performing exposure acquisition according to the target movement track to obtain acquisition data. The exposure acquisition is carried out according to the target motion trail, so that the scanning visual field range can be enlarged, acquisition data of a larger scanning area can be obtained in the image acquisition process, a more accurate three-dimensional reconstruction result can be provided, the reconstructed image is more real and detailed, and the complete scanning image of the organ part can be obtained.

Description

Technical Field

[0001] The present application relates to the field of medical imaging technology, for example, to an image acquisition method and device for a C-arm X-ray device, and a C-arm X-ray device. Background Art

[0002] During interventional surgery, three-dimensional images of blood vessels are acquired through three-dimensional reconstruction technology with the help of C-arm X-ray equipment, such as DSA (Digital Subtraction Angiography) equipment. The range, angle, number of acquisition frames, and image resolution of the two-dimensional rotation acquisition process are the basis of three-dimensional reconstruction. The images within the field of view of each angle acquired through rotation fully and comprehensively present the vascular structure, vascular distribution, and the relationship between lesions and blood vessels. Acquiring a larger scanning area can enable the two-dimensional image to contain more information, and can also help doctors better judge the distribution of the lesion location in the entire area. The three-dimensional image information reconstructed on this basis is also richer in levels, and the vascular detail information obtained is more advantageous, which can display multi-faceted vascular anatomy results.

[0003] In the related art, in order to obtain a wider field of view, a local multi-stage scanning is performed by adopting a direction-based, area-based, and part-based method, and finally a complete two-dimensional image is obtained by splicing.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] Multi-stage scanning is a discontinuous process, which is inconvenient for doctors to operate and cannot obtain complete three-dimensional image information, thus making it impossible to achieve a complete scan of organ parts.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide an image acquisition method and device for a C-arm X-ray device, and a C-arm X-ray device, so as to increase the scanning field of view and obtain a complete scanning image of an organ part.

[0009] In some embodiments, an image acquisition method for a C-arm X-ray device includes: determining a target direction in which a scanning field of view needs to be increased under a target gantry position according to an area to be scanned; determining a target motion trajectory of the gantry based on the target direction and a contour of the area to be scanned, and a scanning field of view of the gantry; wherein, under the target motion trajectory, the scanning field of view of the gantry covers the area to be scanned; and performing exposure acquisition according to the target motion trajectory to obtain acquisition data.

[0010] Optionally, determining a target direction in which the scanning field of view needs to be increased under the target gantry position according to the area to be scanned includes: determining an organ protocol and a target acquisition mode under the organ protocol according to the area to be scanned; determining a target gantry position under the target acquisition mode; and determining a target direction in which the scanning field of view needs to be increased according to the contour of the area to be scanned.

[0011] Optionally, the target direction includes a width direction of the area to be scanned, and based on the target direction and the outline of the area to be scanned, and the scanning field of view of the rack, determining a target motion trajectory of the rack includes: determining a first motion trajectory of the rack based on the target direction and the width of the outline of the area to be scanned in the target direction, and the scanning field of view of the rack; the first motion trajectory is to move a detector of the rack from a first scanning position of the area to be scanned along the target direction to a second scanning position; according to the target rack position and the physical limit of the rack and the coverage angle range, determining a second motion trajectory of the rack at the first scanning position and the second scanning position respectively; the second motion trajectory of each scanning position is to rotate the detector of the rack from the first scanning angle to the second scanning angle.

[0012] Optionally, the target direction includes a width direction of the area to be scanned, and based on the target direction and the contour of the area to be scanned, and the scanning field of view of the rack, determining a target motion trajectory of the rack, including: determining multiple scanning center positions of the rack in the target direction based on the target direction and the width of the contour of the area to be scanned in the target direction, and the scanning field of view of the rack; determining a third motion trajectory of the rack at each scanning center position according to the target rack position, the physical limit of the rack, and the coverage angle range of each scanning center position; the third motion trajectory of each scanning center position is to rotate the detector of the rack from the third scanning angle to the fourth scanning angle.

[0013] Optionally, the target direction includes a length direction of the area to be scanned, and based on the target direction and the contour of the area to be scanned, and the scanning field of view of the rack, determining a target motion trajectory of the rack, including: determining multiple scanning center positions of the rack in the target direction based on the target direction and the length of the contour of the area to be scanned in the target direction, and the scanning field of view of the rack; and determining a fourth motion trajectory of the rack at each scanning center position according to the target rack position, the physical limit of the rack, and the coverage angle range of each scanning center position, wherein the fourth motion trajectory of each scanning center position is to rotate the detector of the rack from the fourth scanning angle to the fifth scanning angle.

[0014] Optionally, the target direction is the length direction of the area to be scanned, and the target motion trajectory of the rack is determined based on the target direction, the contour of the area to be scanned, and the scanning field of view of the rack, including: determining multiple bed positions of the scanning bed in the target direction based on the target direction and the length of the contour of the area to be scanned in the target direction, and the scanning field of view of the rack; and determining a fifth motion trajectory of the rack at each bed position according to the target rack position, the physical limit of the rack, and the coverage angle range of each scanning center position, wherein the fifth motion trajectory of each bed position is to rotate the detector of the rack from a sixth scanning angle to a seventh scanning angle.

[0015] Optionally, the target gantry position includes one of an anteroposterior acquisition position and a lateral acquisition position, wherein the anteroposterior acquisition position is where the C-arm of the gantry is located at one end of the scanning bed, and the lateral acquisition position is where the C-arm of the gantry is located at one side of the scanning bed.

[0016] Optionally, exposure acquisition is performed according to the target motion trajectory to obtain acquisition data, including: determining the running speed of the rack based on the acquisition frame rate and the number of acquisition frames, as well as the target motion trajectory; controlling the rack according to the running speed of the rack and the target motion trajectory, and performing exposure at the acquisition frame rate to obtain acquisition data.

[0017] Optionally, the rack is controlled according to the running speed of the rack and the target motion trajectory, and exposure is performed according to the acquisition frame rate. Before acquiring the acquisition data, the method further includes: controlling the rack according to the running speed of the rack and the target motion trajectory to perform a trajectory test.

[0018] In some embodiments, an image acquisition device for a C-arm X-ray device includes a processor and a memory storing program instructions, and the processor is configured to execute the image acquisition method for a C-arm X-ray device as described above when running the program instructions.

[0019] In some embodiments, the C-arm X-ray device includes: a C-arm X-ray device body; and an image acquisition device for the C-arm X-ray device as described above, which is installed on the C-arm X-ray device body.

[0020] The image acquisition method and device for a C-arm X-ray device and the C-arm X-ray device provided in the embodiments of the present disclosure can achieve the following technical effects:

[0021] In the disclosed embodiment, after determining the target direction that requires increasing the scanning field of view at the target rack position, the target motion trajectory of the rack can be determined based on the target direction and the contour of the area to be scanned, as well as the scanning field of view of the rack. Finally, exposure acquisition is performed according to the target motion trajectory, which can increase the scanning field of view. Therefore, during the image acquisition process, acquisition data of a larger scanning area can be obtained, and further more comprehensive and continuous two-dimensional image data can be obtained, providing more accurate three-dimensional reconstruction results, making the reconstructed image more realistic and detailed, thereby obtaining a complete scanned image of the organ part.

[0022] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0024] Figure 1 is a schematic diagram of an image acquisition method for a C-arm X-ray device provided by an embodiment of the present disclosure;

[0025] Figure 2 is a schematic diagram of a display interface of a C-arm X-ray device provided by an embodiment of the present disclosure;

[0026] Figure 3 It is a schematic diagram of the gantry acquisition direction of the C-arm X-ray device when the target acquisition position is in the upright position;

[0027] Figure 4 It is a schematic diagram of the positions of the detector and the radiation source relative to the machine tool when the target direction is the length direction of the area to be scanned;

[0028] Figure 5 is a schematic diagram of the positions of the detector and the radiation source relative to the machine tool when the target direction is the width direction of the area to be scanned;

[0029] Figure 6 is a schematic diagram of a scanning process of a C-arm X-ray device provided by an embodiment of the present disclosure;

[0030] Figure 7 is a schematic diagram of another image acquisition method for a C-arm X-ray device provided by an embodiment of the present disclosure;

[0031] Figure 8 It is a schematic diagram of an image acquisition device for a C-arm X-ray device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0032] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0033] The terms "first", "second", etc. in the technical solutions described in this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the disclosed embodiments described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0034] Unless otherwise stated, the term "plurality" means two or more.

[0035] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0036] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0037] The term "correspondence" may refer to an association relationship or a binding relationship. The correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

[0038] Combination Figure 1 As shown, the embodiment of the present disclosure provides an image acquisition method for a C-arm X-ray device. The execution subject of the image acquisition method may be a processor. The image acquisition method includes:

[0039] S001, the processor determines the target direction where the scanning field of view needs to be increased at the target rack position according to the area to be scanned.

[0040] S002: The processor determines a target motion trajectory of the rack based on the target direction, the contour of the area to be scanned, and the scanning field of view of the rack.

[0041] S003, the processor performs exposure acquisition according to the target motion trajectory to obtain acquisition data.

[0042] Among them, under the target motion trajectory, the scanning field of view of the rack covers the area to be scanned.

[0043] In the disclosed embodiment, after determining the target direction that needs to increase the scanning field of view under the target gantry position, the target motion trajectory of the gantry can be determined based on the target direction and the contour of the area to be scanned, as well as the scanning field of view of the gantry. Finally, exposure acquisition is performed according to the target motion trajectory, which can increase the scanning field of view, thereby obtaining acquisition data of a larger scanning area during the image acquisition process, providing more accurate three-dimensional reconstruction results, making the reconstructed image more realistic and detailed, and obtaining a complete scan image of the organ part. In addition, a wider field of view and a more continuous image sequence can provide richer diagnostic information, helping to more accurately identify vascular structure, lesion location, and the relationship between blood vessels and lesions. By acquiring a wider field of view at one time, the need for multiple scans and splicing is reduced, which may reduce the operation time and the radiation dose to which the patient and the doctor are exposed.

[0044] Optionally, determining a target direction in which the scanning field of view needs to be increased under the target gantry position according to the area to be scanned includes: determining an organ protocol and a target acquisition mode under the organ protocol according to the area to be scanned; determining a target gantry position under the target acquisition mode; and determining a target direction in which the scanning field of view needs to be increased according to the contour of the area to be scanned.

[0045] In this embodiment, the area to be scanned and the corresponding organ protocol are determined according to the different surgical sites of the patient. Figure 2 As shown, in the display interface of the C-arm X-ray device, after confirming the organ protocol, select the required target acquisition mode, and then in the target acquisition mode, determine the target acquisition position, that is, the target gantry position, and the target direction that needs to increase the scanning field of view under the target gantry position. Among them, the target acquisition mode includes a large field of view rotation acquisition mode, the target acquisition position includes the front position, the left position and the right position, the target direction includes none, horizontal and vertical, the horizontal direction is the width direction of the area to be scanned, and the vertical direction is the length direction of the area to be scanned, and the length direction is also the feed direction of the scanning bed. Figure 3 As shown in FIG. 1 , it is a schematic diagram of the gantry acquisition direction of the C-arm X-ray device when the target acquisition position is the anteroposterior position. The anteroposterior acquisition position and the lateral acquisition position are the relative positions of the C-arm of the gantry. Figure 3 is the positive acquisition position of the rack, then Figure 3 Based on the rack position, the rack rotates 90 degrees along the A axis into or out of the paper, which is the side acquisition position. Rotating 90 degrees into the paper can be defined as the right acquisition position, and rotating 90 degrees out of the paper can be defined as the left acquisition position. The C-arm is a support arm that carries the detector and the radiation source. The rack of the C-arm X-ray device is equipped with a detector and a radiation source. Figure 4 As shown, it is a schematic diagram of the position of the detector and the radiation source relative to the machine tool when the target direction is the length direction of the area to be scanned. Figure 5 The figure shows a schematic diagram of the positions of the detector and the radiation source relative to the machine tool when the target direction is the width direction of the area to be scanned.

[0046] Optionally, the target gantry position includes one of an anteroposterior acquisition position and a lateral acquisition position, wherein the anteroposterior acquisition position is where the C-arm of the gantry is located at one end of the scanning bed, and the lateral acquisition position is where the C-arm of the gantry is located at one side of the scanning bed.

[0047] Optionally, the target direction includes a width direction of the area to be scanned, and based on the target direction and the outline of the area to be scanned, and the scanning field of view of the rack, determining a target motion trajectory of the rack includes: determining a first motion trajectory of the rack based on the target direction and the width of the outline of the area to be scanned in the target direction, and the scanning field of view of the rack; the first motion trajectory is to move a detector of the rack from a first scanning position of the area to be scanned along the target direction to a second scanning position; according to the target rack position and the physical limit of the rack and the coverage angle range, determining a second motion trajectory of the rack at the first scanning position and the second scanning position respectively; the second motion trajectory of each scanning position is to rotate the detector of the rack from the first scanning angle to the second scanning angle.

[0048] In this embodiment, taking the target direction as the width direction of the area to be scanned as an example, according to the target direction and the width of the outline of the area to be scanned in the target direction, and the scanning field of view of the gantry, the positions to be scanned on the left and right sides of the patient, i.e., the first scanning position and the second scanning position, are first determined, and according to the organ position of the patient and the fatness or thinness of the patient, the first motion trajectory of the gantry is determined. Figure 6 As shown, the target direction is the width direction of the patient's body, with 45 degrees to the left of the patient's body as the starting position and 45 degrees to the right of the patient's body as the ending position. The horizontal movement of the rack from the starting position to the ending position will scan the horizontal area centered on the patient's body. Then, according to the target rack position, the physical limit of the rack, and the coverage angle range, the second motion trajectory of the rack at the first scanning position and the second scanning position can be determined respectively, so that the detector of the rack rotates from the first scanning angle to the second scanning angle, so that the rack can collect continuous spatial image information to ensure that more image information can be collected in the horizontal direction and the rotation direction. In this embodiment, the first motion trajectory and the second motion trajectory can form an elliptical shape.

[0049] Optionally, the target direction includes a width direction of the area to be scanned, and based on the target direction and the contour of the area to be scanned, and the scanning field of view of the rack, determining a target motion trajectory of the rack, including: determining multiple scanning center positions of the rack in the target direction based on the target direction and the width of the contour of the area to be scanned in the target direction, and the scanning field of view of the rack; determining a third motion trajectory of the rack at each scanning center position according to the target rack position, the physical limit of the rack, and the coverage angle range of each scanning center position; the third motion trajectory of each scanning center position is to rotate the detector of the rack from the third scanning angle to the fourth scanning angle.

[0050] In this embodiment, the target motion trajectory can also be determined by first determining multiple scanning center positions of the rack in the target direction according to the target direction and the width of the outline of the area to be scanned in the target direction, as well as the scanning field of view of the rack, and then determining the third motion trajectory of each scanning center position. For example, according to the width of the area to be scanned in the horizontal direction, the center position of the area to be scanned is first determined as the first scanning center position, and then the second scanning center position and the third scanning center position are determined on the left and right sides of the first scanning center position respectively. With the left scanning center position as a reference, the third scanning angle is the scanning starting position, and the fourth scanning angle is the scanning ending position, so as to achieve a certain range of scanning at the left scanning center position, for example, scanning in the range of positive 45 degrees to negative 45 degrees at the left scanning center position. Then, with the first scanning center position as a reference, combined with the rotation direction starting position and the rotation direction ending position, the corresponding third motion trajectory is determined, so as to achieve a certain range of rotation scanning, for example, scanning in the range of positive 100 degrees to negative 100 degrees at the first scanning center position. Finally, the corresponding third motion trajectory is determined with the right scanning center position as a reference and with reference to the left scanning center position, thereby realizing scanning within a certain range of the right scanning center position.

[0051] Optionally, the target direction includes a length direction of the area to be scanned, and based on the target direction and the contour of the area to be scanned, and the scanning field of view of the rack, determining a target motion trajectory of the rack, including: determining multiple scanning center positions of the rack in the target direction based on the target direction and the length of the contour of the area to be scanned in the target direction, and the scanning field of view of the rack; and determining a fourth motion trajectory of the rack at each scanning center position according to the target rack position, the physical limit of the rack, and the coverage angle range of each scanning center position, wherein the fourth motion trajectory of each scanning center position is to rotate the detector of the rack from the fourth scanning angle to the fifth scanning angle.

[0052] In this embodiment, if the target direction is the length direction of the area to be scanned, it is necessary to measure the length of the area to be scanned according to the difference in the area to be scanned, and determine the upper scanning center position and the lower scanning center position of the area to be scanned according to the center position of the area to be scanned, and then determine the fourth motion trajectory of each scanning center position by a method similar to that of determining the third motion trajectory. In this embodiment, switching between multiple scanning center positions is achieved by moving the rack.

[0053] Optionally, the target direction is the length direction of the area to be scanned, and the target motion trajectory of the rack is determined based on the target direction, the contour of the area to be scanned, and the scanning field of view of the rack, including: determining multiple bed positions of the scanning bed in the target direction based on the target direction and the length of the contour of the area to be scanned in the target direction, and the scanning field of view of the rack; and determining a fifth motion trajectory of the rack at each bed position according to the target rack position, the physical limit of the rack, and the coverage angle range of each scanning center position, wherein the fifth motion trajectory of each bed position is to rotate the detector of the rack from a sixth scanning angle to a seventh scanning angle.

[0054] In this embodiment, in addition to determining multiple scanning center positions of the gantry in the target direction, multiple bed positions of the scanning bed in the target direction can also be determined according to the target direction and the length of the contour of the area to be scanned in the target direction, as well as the scanning field of view of the gantry, and then the fifth motion trajectory of each bed position is determined. In this embodiment, switching between multiple scanning center positions is achieved by moving the bed board of the scanning bed.

[0055] Optionally, exposure acquisition is performed according to the target motion trajectory to obtain acquisition data, including determining the running speed of the rack according to the acquisition frame rate and the number of acquisition frames, as well as the target motion trajectory; according to the running speed of the rack and the target motion trajectory, the rack is controlled, and exposure is performed according to the acquisition frame rate to obtain acquisition data.

[0056] In this embodiment, the acquisition frame rate is the number of images acquired within one second, and the acquisition frame number is the number of images that need to be acquired. According to the acquisition frame rate and the acquisition frame number, the time required for acquisition can be determined, and then the motion length can be determined according to the target motion trajectory, and the running speed of the rack can be calculated. Finally, according to the running speed and the target motion trajectory, the rack is controlled to perform exposure acquisition to obtain acquisition data. The acquisition frame rate and the acquisition frame number can be automatically set according to the scanning protocol, or can be manually configured through the display interface.

[0057] Optionally, the rack is controlled according to the running speed of the rack and the target motion trajectory, and exposure is performed according to the acquisition frame rate. Before acquiring the acquisition data, the method further includes: controlling the rack according to the running speed of the rack and the target motion trajectory to perform a trajectory test.

[0058] In this embodiment, the target motion trajectory is tested to ensure that the machine tool can start and end movement at the correct position to ensure that the required scanning area can be covered. After the trajectory test is completed, the parameters represented by the target motion trajectory are sent to the controller so that the controller controls the detector to perform exposure acquisition according to the correct trajectory.

[0059] Optionally, the image acquisition method for a C-arm X-ray device also includes: when the C-arm X-ray device is scanning normally, determining the field of view according to the target acquisition position; calculating the rotation direction starting angle, rotation direction ending angle and rotation speed according to the organ protocol, field of view, acquisition frame number and acquisition frequency; and performing exposure acquisition according to the rotation direction starting angle, rotation direction ending angle and rotation speed.

[0060] In this embodiment, the C-arm X-ray device is scanning normally, that is, there is no need to increase the scanning field of view. At this time, the starting angle, ending angle and rotation speed of the frame in the rotation direction are calculated directly according to the organ protocol, acquisition position, field of view, acquisition frame number and acquisition frequency, and all parameters are integrated and sent to the motion controller for exposure acquisition.

[0061] Optionally, the image acquisition method for a C-arm X-ray device further includes: after obtaining the acquired data, performing an image reconstruction operation on the acquired data to obtain a reconstructed image.

[0062] Combination Figure 7 As shown, the embodiment of the present disclosure provides another image acquisition method for a C-arm X-ray device, comprising:

[0063] S101, the processor determines, according to the area to be scanned, a target direction in which a scanning field of view needs to be increased at a target rack position.

[0064] S102: The processor determines a target motion trajectory of the rack based on the target direction, the contour of the area to be scanned, and the scanning field of view of the rack.

[0065] S103, the processor performs exposure acquisition according to the target motion trajectory to obtain acquisition data.

[0066] S104: The processor performs an image reconstruction operation on the collected data to obtain a reconstructed image.

[0067] In this embodiment, the images determined by the collected data are all two-dimensional images, and the collected data needs to be reconstructed in three dimensions to obtain a more comprehensive reconstructed image, thereby achieving scanning of a complete organ site.

[0068] Combination Figure 8As shown, an embodiment of the present disclosure provides an image acquisition device 300 for a C-arm X-ray device, including a processor (processor) 200 and a memory (memory) 201. Optionally, the image acquisition device may also include a communication interface (Communication Interface) 202 and a bus 203. Among them, the processor 200, the communication interface 202, and the memory 201 can communicate with each other through the bus 203. The communication interface 202 can be used for information transmission. The processor 200 can call the logic instructions in the memory 201 to execute the image acquisition method for the C-arm X-ray device of the above embodiment.

[0069] In addition, the logic instructions in the memory 201 described above may be implemented in the form of software functional units and when sold or used as independent products, may be stored in a computer-readable storage medium.

[0070] The memory 201 is a computer-readable storage medium that can be used to store software programs and computer executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 200 executes the functional application and data processing by running the program instructions / modules stored in the memory 201, that is, the image acquisition method for the C-arm X-ray device in the above embodiment is implemented.

[0071] The memory 201 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 201 may include a high-speed random access memory and may also include a non-volatile memory.

[0072] The disclosed embodiment provides a C-arm X-ray device, including: a C-arm X-ray device body, and the above-mentioned image acquisition device for the C-arm X-ray device. The image acquisition device for the C-arm X-ray device is installed in the C-arm X-ray device body. The installation relationship described here is not limited to placement inside the C-arm X-ray device, but also includes installation connections with other components of the C-arm X-ray device, including but not limited to physical connections, electrical connections or signal transmission connections, etc. Those skilled in the art can understand that the image acquisition device for the C-arm X-ray device can be adapted to a feasible C-arm X-ray device body, thereby realizing other feasible embodiments.

[0073] An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured to execute the above-mentioned image acquisition method for a C-arm X-ray device.

[0074] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiment of the present disclosure. The aforementioned storage medium may be a non-transient storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

[0075] The above description and accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent possible changes only. Unless explicitly required, separate components and functions are optional, and the order of operation may vary. The parts and features of some embodiments may be included in or replace the parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the technical solutions recorded in this application. As used in the technical solutions recorded in this application, unless the context clearly indicates, the singular forms of "a", "an" and "the" are intended to include plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of listings containing one or more associated ones. In addition, when used in the present application, the term "comprise" and its variants "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method or device comprising the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

[0076] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods for each specific application to implement the described functions, but such implementations should not be considered to exceed the scope of the embodiments of the present disclosure. The technicians may clearly understand that, for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0077] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units can be only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present disclosure may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit.

[0078] The flowchart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to the embodiment of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. In the description corresponding to the flowchart and the block diagram in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in a different order from the order disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified functions or actions, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. An image acquisition method for a C-arm X-ray device, characterized in that: include: According to the area to be scanned, determine the target direction where the scanning field of view needs to be enlarged under the target rack position; Determine the target motion trajectory of the rack based on the target direction and the contour of the area to be scanned, and the scanning field of view of the rack; wherein, under the target motion trajectory, the scanning field of view of the rack covers the area to be scanned; Exposure and acquisition are performed according to the target motion trajectory to obtain acquisition data.

2. The image acquisition method according to claim 1, characterized in that: According to the area to be scanned, determine the target direction where the scanning field of view needs to be enlarged under the target rack position, including: Determine the organ protocol and the target acquisition mode under the organ protocol according to the area to be scanned; determining a target rack position in a target acquisition mode; According to the outline of the area to be scanned, determine the target direction in which the scanning field of view needs to be increased.

3. The image acquisition method according to claim 1, characterized in that: The target direction includes the width direction of the area to be scanned. Based on the target direction and the contour of the area to be scanned, and the scanning field of view of the rack, the target motion trajectory of the rack is determined, including: Based on the target direction and the width of the outline of the area to be scanned in the target direction, and the scanning field of view of the rack, a first motion trajectory of the rack is determined; the first motion trajectory is to move the detector of the rack from a first scanning position of the area to be scanned to a second scanning position along the target direction; According to the target rack position, the physical limit of the rack and the coverage angle range, the second motion trajectory of the rack at the first scanning position and the second scanning position is determined respectively; the second motion trajectory of each scanning position is to rotate the detector of the rack from the first scanning angle to the second scanning angle.

4. The image acquisition method according to claim 1, characterized in that: The target direction includes the width direction of the area to be scanned. Based on the target direction and the contour of the area to be scanned, and the scanning field of view of the rack, the target motion trajectory of the rack is determined, including: Determine multiple scanning center positions of the rack in the target direction based on the target direction, the width of the outline of the area to be scanned in the target direction, and the scanning field of view of the rack; According to the target rack position and the physical limit of the rack and the coverage angle range of each scanning center position, the third motion trajectory of the rack at each scanning center position is determined respectively; the third motion trajectory of each scanning center position is to rotate the detector of the rack from the third scanning angle to the fourth scanning angle.

5. The image acquisition method according to claim 1, characterized in that: The target direction includes the length direction of the area to be scanned. Based on the target direction and the contour of the area to be scanned, and the scanning field of view of the rack, the target motion trajectory of the rack is determined, including: Determine multiple scanning center positions of the rack in the target direction based on the target direction and the length of the contour of the area to be scanned in the target direction, and the scanning field of view of the rack; According to the target rack position and the physical limit of the rack and the coverage angle range of each scanning center position, the fourth motion trajectory of the rack at each scanning center position is determined respectively, and the fourth motion trajectory of each scanning center position is to rotate the detector of the rack from the fourth scanning angle to the fifth scanning angle.

6. The image acquisition method according to claim 1, characterized in that: The target direction is the length direction of the area to be scanned. Based on the target direction and the contour of the area to be scanned, and the scanning field of view of the rack, the target motion trajectory of the rack is determined, including: Based on the target direction and the length of the contour of the area to be scanned in the target direction, and the scanning field of view of the gantry, a plurality of bed positions of the scanning bed in the target direction are determined; According to the target gantry position, the physical limit of the gantry and the coverage angle range of each scanning center position, the fifth motion trajectory of the gantry at each bed is determined respectively, and the fifth motion trajectory of each bed is to rotate the detector of the gantry from the sixth scanning angle to the seventh scanning angle.

7. The image acquisition method according to any one of claims 1 to 6, characterized in that: The target gantry position includes one of an anteroposterior acquisition position and a lateral acquisition position. The anteroposterior acquisition position is that the C-arm of the gantry is located at one end of the scanning bed, and the lateral acquisition position is that the C-arm of the gantry is located at one side of the scanning bed.

8. The image acquisition method according to any one of claims 1 to 6, characterized in that: Exposure acquisition is performed according to the target motion trajectory to obtain acquisition data, including: Determine the running speed of the rack based on the acquisition frame rate, the number of acquisition frames, and the target motion trajectory; The rack is controlled according to its running speed and target motion trajectory, and exposure is performed according to the acquisition frame rate to obtain the acquisition data.

9. The image acquisition method according to claim 8, characterized in that: According to the running speed of the rack and the target motion trajectory, the rack is controlled and exposed according to the acquisition frame rate. Before acquiring the acquisition data, the following is also included: According to the running speed of the rack and the target motion trajectory, the rack is controlled to perform trajectory testing.

10. An image acquisition device for a C-arm X-ray device, comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to execute the image acquisition method for a C-arm X-ray device according to any one of claims 1 to 9 when running the program instructions.

11. A C-arm X-ray device, characterized in that: include: C-arm X-ray equipment body; The image acquisition device for a C-arm X-ray device as described in claim 10 is installed on the C-arm X-ray device body.

Images