Image acquisition method and apparatus for c-arm x-ray device, c-arm x-ray device

Abstract

This application relates to the field of medical imaging technology, disclosing an image acquisition method and apparatus for a C-arm X-ray device, and the C-arm X-ray device itself. The image acquisition method includes: determining a target direction from which the scanning field of view needs to be increased under the target gantry position, based on the area to be scanned; determining the target motion trajectory of the gantry based on the target direction, the contour of the area to be scanned, and the 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. Performing exposure acquisition according to the target motion trajectory can increase the scanning field of view, thereby obtaining acquisition data for 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 thus obtaining a complete scan image of the organ.

Description

Technical Field

[0001] This application relates to the field of medical imaging technology, such as an image acquisition method and apparatus for a C-arm X-ray device, and the C-arm X-ray device itself. Background Technology

[0002] During interventional procedures, C-arm X-ray equipment, such as DSA (Digital Subtraction Angiography), is used to acquire three-dimensional images of blood vessels through 3D reconstruction technology. The range, angle, number of frames, and image resolution of the two-dimensional rotational acquisition process form the basis of 3D reconstruction. Images acquired from various angles within the field of view during rotation comprehensively present the vascular structure, vascular distribution, and the relationship between lesions and blood vessels. Acquiring a larger scanning area allows the two-dimensional image to contain more information, helping doctors better determine the distribution of lesions within the entire area. The reconstructed 3D image based on this information has richer layers, providing more detailed vascular information and showcasing multi-directional vascular anatomy.

[0003] In related technologies, in order to obtain a larger field of view, multi-stage scanning is performed locally by dividing the view into directions, regions, and parts, and finally the complete two-dimensional image is obtained by stitching the images together.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found 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 spatial 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 background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0008] This disclosure provides an image acquisition method and apparatus for a C-arm X-ray device, as well as a C-arm X-ray device, to increase the scanning field of view and obtain complete scan images of organ parts.

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

[0010] Optionally, based on the area to be scanned, determine the target direction for increasing the scanning field of view under the target gantry position, including: determining the organ protocol and the target acquisition mode under the organ protocol based on the area to be scanned; determining the target gantry position under the target acquisition mode; and determining the target direction for increasing the scanning field of view based on the contour of the area to be scanned.

[0011] Optionally, the target direction includes the width direction of the area to be scanned. Based on the target direction, 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: determining a first motion trajectory of the rack based on the target direction, the width of the contour 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 the detector of the rack from a first scanning position in the area to be scanned along the target direction to a second scanning position; and determining a second motion trajectory of the rack at the first scanning position and the second scanning position according to the target rack position, the physical limits of the rack, and the coverage angle range; the second motion trajectory at 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 the width direction of the area to be scanned. Based on the target direction, the contour of the area to be scanned, and the scanning field of view of the gantry, the target motion trajectory of the gantry is determined, including: determining multiple scanning center positions of the gantry in the target direction based on the target direction, the width of the contour of the area to be scanned in the target direction, and the scanning field of view of the gantry; determining a third motion trajectory of the gantry at each scanning center position according to the target gantry position, the physical limitations of the gantry, and the coverage angle range of each scanning center position; the third motion trajectory at each scanning center position is to rotate the detector of the gantry from a third scanning angle to a fourth scanning angle.

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

[0015] Optionally, the target gantry position includes one of a frontal acquisition position and a lateral acquisition position. In the frontal acquisition position, the C-arm of the gantry is located at one end of the scanning bed, and in the lateral acquisition position, the C-arm of the gantry is located on one side of the scanning bed.

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

[0017] Optionally, before acquiring the acquisition data, the system further includes controlling the rack according to its running speed and the target's motion trajectory, and performing exposure according to the acquisition frame rate.

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

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

[0020] The image acquisition method and apparatus for C-arm X-ray equipment and the C-arm X-ray equipment provided in this disclosure can achieve the following technical effects:

[0021] In this embodiment of the disclosure, after determining the target direction for which the scanning field of view needs to be increased at the target gantry position, the target motion trajectory of the gantry can be determined based on the target direction, the contour of the area to be scanned, and 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 range. Thus, during the image acquisition process, a larger scanning area acquisition data can be obtained, thereby obtaining more comprehensive and continuous two-dimensional image data, providing more accurate three-dimensional reconstruction results, making the reconstructed image more realistic and detailed, and thus obtaining a complete scan image of the organ.

[0022] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0023] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

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

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

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

[0027] Figure 4 This is a schematic diagram showing the positions of the detector and the X-ray source relative to the machine tool when the target direction is the length direction of the area to be scanned;

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

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

[0030] Figure 7 This is a schematic diagram of another image acquisition method for a C-arm X-ray device provided in this disclosure embodiment;

[0031] Figure 8 This is a schematic diagram of an image acquisition device for a C-arm X-ray equipment provided in an embodiment of this disclosure. Detailed Implementation

[0032] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0033] The terms "first," "second," etc., used 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 such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

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

[0035] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0036] The term "and / or" describes an association 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" can refer to an association or binding relationship. The correspondence between A and B means that there is an association or binding relationship between A and B.

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

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

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

[0041] S003, the processor performs exposure acquisition based on the target's motion trajectory to obtain the acquired data.

[0042] In this process, the scanning field of view of the gantry covers the area to be scanned under the target's motion trajectory.

[0043] In this embodiment, after determining the target direction requiring an increased scanning field of view at the target gantry location, the target motion trajectory of the gantry can be determined based on the target direction, the contour of the area to be scanned, and the scanning field of view of the gantry. Finally, exposure acquisition is performed based on the target motion trajectory, which increases the scanning field of view. This allows for the acquisition of data from a larger scanning area during image acquisition, providing more accurate 3D reconstruction results. The reconstructed images are more realistic and detailed, resulting in complete scanned images of the organ. Furthermore, a wider field of view and more continuous image sequences can provide richer diagnostic information, helping to more accurately identify vascular structures, lesion locations, and the relationship between blood vessels and lesions. By acquiring a wider field of view in a single operation, the need for multiple scans and stitching is reduced, potentially decreasing surgical time and radiation exposure for both the patient and the physician.

[0044] Optionally, based on the area to be scanned, determine the target direction for increasing the scanning field of view under the target gantry position, including: determining the organ protocol and the target acquisition mode under the organ protocol based on the area to be scanned; determining the target gantry position under the target acquisition mode; and determining the target direction for increasing the scanning field of view based on the contour of the area to be scanned.

[0045] In this embodiment, the area to be scanned and the corresponding organ protocol are determined based on the patient's surgical site. Combined with... Figure 2 As shown, on the C-arm X-ray equipment display interface, after determining the organ protocol, select the desired target acquisition mode. Then, within the target acquisition mode, determine the target acquisition position, i.e., the target gantry position, and the target direction from which to increase the scanning field of view. The target acquisition modes include a large field-of-view rotation acquisition mode; target acquisition positions include frontal, left lateral, and right lateral views; and target directions include none, horizontal, and vertical. The horizontal direction is the width of the area to be scanned, and the vertical direction is the length of the area to be scanned, which is also the feed direction of the scanning table. Combined with... Figure 3 The diagram shows the acquisition direction of the C-arm X-ray machine gantry when the target acquisition position is in the positive position. The positive and lateral acquisition positions are the relative positions of the C-arm of the gantry. Figure 3 If it is the correct position for data acquisition on the rack, then in Figure 3 Based on the gantry position, rotating the gantry 90 degrees along the A-axis inwards or outwards from the plane of the paper defines the side acquisition position. Rotating 90 degrees inwards from the paper defines the right side acquisition position, and rotating 90 degrees outwards from the paper defines the left side acquisition position. The C-arm is the support arm that houses the detector and radiation source. The gantry of the C-arm X-ray equipment is equipped with detectors and radiation sources, combined with... Figure 4 The diagram shows the positions of the detector and the X-ray source relative to the machine tool when the target direction is the length direction of the area to be scanned. Combined with... Figure 5 The diagram shows the positions of the detector and the X-ray 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 a frontal acquisition position and a lateral acquisition position. In the frontal acquisition position, the C-arm of the gantry is located at one end of the scanning bed, and in the lateral acquisition position, the C-arm of the gantry is located on one side of the scanning bed.

[0047] Optionally, the target direction includes the width direction of the area to be scanned. Based on the target direction, 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: determining a first motion trajectory of the rack based on the target direction, the width of the contour 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 the detector of the rack from a first scanning position in the area to be scanned along the target direction to a second scanning position; and determining a second motion trajectory of the rack at the first scanning position and the second scanning position according to the target rack position, the physical limits of the rack, and the coverage angle range; the second motion trajectory at 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, based on the target direction, the width of the contour 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 are first determined, namely the first scanning position and the second scanning position. Then, based on the patient's organ location and the patient's body size, the first movement trajectory of the gantry is determined. For example, as... Figure 6 As shown, the target direction is the width of the patient's body. Starting at a 45-degree angle to the left of the patient's body and ending at a 45-degree angle to the right, the horizontal movement of the gantry from the starting to the ending position scans a horizontal area centered on the patient's body. Then, based on the target gantry position, the gantry's physical limitations, and the coverage angle range, a second motion trajectory for the gantry can be determined at the first and second scanning positions, causing the gantry's detector to rotate from the first scanning angle to the second scanning angle. This allows the gantry to acquire continuous spatial image information, ensuring more image information is acquired in both the horizontal and rotational directions. In this embodiment, the first and second motion trajectories can form a shape similar to an ellipse.

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

[0050] In this embodiment, the determination of the target motion trajectory can also be achieved by first determining multiple scanning center positions of the gantry in the target direction based on the target direction, the width of the contour of the area to be scanned in the target direction, and the scanning field of view of the gantry, and then determining a third motion trajectory for each scanning center position. For example, based on 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 and third scanning center positions are determined to the left and right sides of the first scanning center position, respectively. Taking the left scanning center position as a reference, the third scanning angle is the scanning start position, and the fourth scanning angle is the scanning end position, thereby achieving scanning within a certain range at the left scanning center position, such as scanning within a range of ±45 degrees to ±45 degrees at the left scanning center position. Then, taking the first scanning center position as a reference, combined with the rotation direction start position and rotation direction end position, the corresponding third motion trajectory is determined, thereby achieving rotational scanning within a certain range, such as scanning within a range of ±100 degrees to ±100 degrees at the first scanning center position. Finally, using the right scan center position as a reference and referring to the left scan center position, the corresponding third motion trajectory is determined, thereby achieving scanning within a certain range at the right scan center position.

[0051] Optionally, the target direction includes the length direction of the area to be scanned. Based on the target direction, the contour of the area to be scanned, and the scanning field of view of the gantry, the target motion trajectory of the gantry is determined, including: determining multiple scanning center positions of the gantry in the target direction based on the target direction, the length of the contour of the area to be scanned in the target direction, and the scanning field of view of the gantry; and determining a fourth motion trajectory of the gantry at each scanning center position according to the target gantry position, the physical limitations of the gantry, and the coverage angle range of each scanning center position. The fourth motion trajectory at each scanning center position is to rotate the detector of the gantry 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, the length of the area to be scanned needs to be measured according to its specific characteristics. Based on the center position of the area to be scanned, the upper and lower scanning center positions are determined. Then, a fourth motion trajectory for each scanning center position is determined using a method similar to that used to determine the third motion trajectory. In this embodiment, switching between multiple scanning center positions is achieved by moving the gantry.

[0053] Optionally, the target direction is the length direction of the area to be scanned. Based on the target direction, the contour of the area to be scanned, and the scanning field of view of the gantry, the target motion trajectory of the gantry is determined, including: determining multiple positions of the scanning bed in the target direction based on the target direction, the length of the contour of the area to be scanned in the target direction, and the scanning field of view of the gantry; and determining the fifth motion trajectory of the gantry at each position according to the target gantry position, the physical limits of the gantry, and the coverage angle range of each scanning center position. The fifth motion trajectory of each position is to rotate the detector of the gantry from the sixth scanning angle to the 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 be determined based on the target direction, the length of the contour of the area to be scanned in the target direction, and the scanning field of view of the gantry, thereby determining the fifth motion trajectory of each bed position. 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 based on the target motion trajectory to obtain acquisition data, including determining the rack's operating speed based on the acquisition frame rate and number of acquisition frames, as well as the target motion trajectory; controlling the rack based on the rack's operating speed and the target motion trajectory, and performing exposure according to the acquisition frame rate to obtain acquisition data.

[0056] In this embodiment, the acquisition frame rate is the number of images acquired per second, and the acquisition frame number is the number of images to be acquired. Based on the acquisition frame rate and acquisition frame number, the time required for acquisition can be determined. Then, based on the target motion trajectory, the motion length can be determined, and the rack's operating speed can be calculated. Finally, based on the operating speed and target motion trajectory, the rack is controlled to perform exposure acquisition to obtain the acquired data. The acquisition frame rate and acquisition frame number can be automatically set according to the scanning protocol or manually configured through the display interface.

[0057] Optionally, before acquiring the acquisition data, the system further includes controlling the rack according to its running speed and the target's motion trajectory, and performing exposure according to the acquisition frame rate.

[0058] In this embodiment, trajectory testing of the target motion trajectory ensures that the machine tool can start and end its movement at the correct positions, thereby ensuring coverage of the required scanning area. After completing the trajectory test, the parameters represented by the target motion trajectory are sent to the controller, enabling the controller to control the detector to perform exposure acquisition according to the correct trajectory.

[0059] Optionally, the image acquisition method for a C-arm X-ray device further includes: determining the field of view based on the target acquisition position during normal scanning of the C-arm X-ray device; calculating the starting angle, ending angle, and rotation speed of the rotation direction based on the organ protocol, field of view, number of acquisition frames, and acquisition frequency; and performing exposure acquisition based on the starting angle, ending angle, and rotation speed of the rotation direction.

[0060] In this embodiment, when the C-arm X-ray equipment is scanning normally, that is, when there is no need to increase the scanning field of view, the starting angle, ending angle and rotation speed of the gantry in the rotation direction are calculated directly based on the organ protocol, acquisition position, field of view, number of acquisition frames and acquisition frequency. 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 acquiring the acquired data, performing an image reconstruction operation on the acquired data to obtain a reconstructed image.

[0062] Combination Figure 7 As shown, this disclosure provides another image acquisition method for a C-arm X-ray device, including:

[0063] S101, the processor determines the target direction where the scanning field of view needs to be increased under the target rack position based on the area to be scanned.

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

[0065] S103, the processor performs exposure acquisition based on the target's motion trajectory to obtain the acquired data.

[0066] S104, the processor performs image reconstruction on the acquired data to obtain a reconstructed image.

[0067] In this embodiment, the images determined by the acquired data are all two-dimensional images. It is also necessary to perform three-dimensional reconstruction on the acquired data to obtain more comprehensive reconstructed images, thereby realizing the scanning of complete organ parts.

[0068] Combination Figure 8As shown, this disclosure provides an image acquisition device 300 for a C-arm X-ray apparatus, including a processor 200 and a memory 201. Optionally, the image acquisition device may further include a communication interface 202 and a bus 203. The processor 200, communication interface 202, and memory 201 can communicate with each other via the bus 203. The communication interface 202 can be used for information transmission. The processor 200 can call logical instructions in the memory 201 to execute the image acquisition method for a C-arm X-ray apparatus described in the above embodiment.

[0069] Furthermore, the logic instructions in the aforementioned memory 201 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

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

[0071] The memory 201 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 201 may include high-speed random access memory and may also include non-volatile memory.

[0072] This disclosure provides a C-arm X-ray device, including: a C-arm X-ray device body, and the aforementioned 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 herein is not limited to placement inside the C-arm X-ray device, but also includes installation and connection with other components of the C-arm X-ray device, including but not limited to physical connections, electrical connections, or signal transmission connections. Those skilled in the art will understand that the image acquisition device for the C-arm X-ray device can be adapted to any feasible C-arm X-ray device body, thereby realizing other feasible embodiments.

[0073] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the image acquisition method for a C-arm X-ray device described above.

[0074] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing program code.

[0075] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the technical solutions described herein. As used in the technical solutions described herein, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used herein means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0076] Those skilled in the art will recognize that the units and algorithm steps of the various examples 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 implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

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

[0078] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using 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: Based on the area to be scanned, determine the target direction where the scanning field of view needs to be increased under the target rack position; Based on the target direction, the contour of the area to be scanned, and the scanning field of view of the gantry, the target motion trajectory of the gantry is determined; wherein, under the target motion trajectory, the scanning field of view of the gantry covers the area to be scanned; Exposure data is collected based on the target's motion trajectory to obtain the collected data; The target direction includes the width direction of the area to be scanned. Based on the target direction, the contour of the area to be scanned, and the scanning field of view of the gantry, the target motion trajectory of the gantry is determined, including: Based on the target direction, the width of the contour 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 in the area to be scanned along the target direction to a second scanning position; according to the target rack position, the physical limits of the rack, and the coverage angle range, a second motion trajectory of the rack is determined at the first scanning position and the second scanning position respectively; the second motion trajectory at each scanning position is to rotate the detector of the rack from the first scanning angle to the second scanning angle; or, Based on the target direction and the width of the contour of the area to be scanned in the target direction, as well as the scanning field of view of the gantry, multiple scanning center positions of the gantry in the target direction are determined; according to the target gantry position, the physical limits of the gantry, and the coverage angle range of each scanning center position, the third motion trajectory of the gantry at each scanning center position is determined; the third motion trajectory at each scanning center position is to rotate the detector of the gantry from the third scanning angle to the fourth scanning angle.

2. The image acquisition method according to claim 1, characterized in that, Based on the area to be scanned, determine the target directions where the scanning field of view needs to be increased under the target rack position, including: Based on the area to be scanned, determine the organ protocol and the target acquisition mode under the organ protocol; Determine the target rack location in target acquisition mode; Based on the contour 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 length direction of the area to be scanned. Based on the target direction, the contour of the area to be scanned, and the scanning field of view of the gantry, the target motion trajectory of the gantry is determined, including: Based on 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, the positions of multiple scanning centers of the gantry in the target direction are determined; Based on the target rack position, the rack's physical limitations, and the coverage angle range of each scanning center position, the fourth motion trajectory of the rack at each scanning center position is determined. The fourth motion trajectory at each scanning center position is to rotate the rack's detector from the fourth scanning angle to the fifth scanning angle.

4. 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, the contour of the area to be scanned, and the scanning field of view of the gantry, the target motion trajectory of the gantry is determined, including: Based on 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, multiple positions of the scanning bed in the target direction are determined; Based on the target rack position, the physical limits of the rack, and the coverage angle range of each scanning center position, the fifth motion trajectory of the rack at each bed position is determined. The fifth motion trajectory of each bed position is to rotate the detector of the rack from the sixth scanning angle to the seventh scanning angle.

5. The image acquisition method according to any one of claims 1 to 4, characterized in that, The target gantry position includes one of the frontal acquisition position and the lateral acquisition position. The frontal acquisition position is when the C-arm of the gantry is located at one end of the scanning bed, and the lateral acquisition position is when the C-arm of the gantry is located on one side of the scanning bed.

6. The image acquisition method according to any one of claims 1 to 4, characterized in that, Exposure data is collected based on the target's motion trajectory to obtain the collected data, including: The rack's operating speed is determined based on the acquisition frame rate and number of acquisition frames, as well as the target's motion trajectory. Based on the rack's operating speed and the target's trajectory, the rack is controlled, and exposure is performed according to the acquisition frame rate to acquire data.

7. The image acquisition method according to claim 6, characterized in that, Based on the rack's operating speed and the target's trajectory, the rack is controlled, and exposure is performed according to the acquisition frame rate. Before acquiring the data, the following steps are also included: Based on the rack's operating speed and the target's trajectory, the rack is controlled to perform trajectory testing.

8. An image acquisition device for a C-arm X-ray apparatus, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to execute, when running the program instructions, the image acquisition method for a C-arm X-ray device as described in any one of claims 1 to 7.

9. 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 8 is installed on the body of the C-arm X-ray device.

Images