Spect imaging system, imaging method and spect imaging apparatus

Abstract

This application relates to a SPECT imaging system, imaging method, and SPECT imaging device. The SPECT imaging system includes multiple imaging modules and a data integration module. Each imaging module scans and images a local area of ​​the object under test, obtaining local imaging data. The data integration module is communicatively connected to the multiple imaging modules and integrates the multiple local imaging data to obtain a complete image. Each imaging module in this application can scan and image a local area of ​​the object under test, thereby obtaining corresponding local imaging data. Simultaneously, the data integration module integrates the multiple local imaging data to obtain a complete image. Since each imaging module includes a motion control unit and a probe, their scanning processes are relatively independent. When multiple areas need to be scanned, multiple imaging modules can perform scanning simultaneously, thus enabling parallel scanning of the object under test and improving scanning efficiency.

Description

Technical Field

[0001] This application relates to the field of SPECT technology, and in particular to a SPECT imaging system, imaging method and SPECT imaging device. Background Technology

[0002] Single-photon emission computed tomography (SPECT) is an imaging technique widely used in medical diagnostics. It reconstructs tomographic images of tissues or organs by detecting gamma rays emitted by radioactive isotopes within the body. SPECT has a wide range of applications, primarily in medical diagnostics, particularly in cardiovascular diseases, oncology, neurology, and bone diseases. It assesses organ function, blood flow, and disease progression by detecting the distribution of radiolabeled drugs within the body.

[0003] Traditional SPECT systems typically employ a single-probe or dual-probe design, requiring sequential scanning of different body parts of the patient. However, this sequential scanning method is not only time-consuming but can also incur additional time costs due to patient repositioning and repositioning. Summary of the Invention

[0004] Therefore, it is necessary to provide a SPECT imaging system, imaging method, and SPECT imaging device that can improve scanning efficiency in response to the above-mentioned technical problems.

[0005] In a first aspect, this application proposes a SPECT imaging system, comprising: multiple imaging modules and a data integration module, wherein each imaging module is used to scan a local area of ​​the object to be tested to obtain local imaging data; wherein each imaging module includes at least one motion control unit and a probe, the motion control unit being used to control the motion trajectory of the probe; the data integration module is communicatively connected to the multiple imaging modules respectively, and the data integration module is used to integrate the multiple local imaging data to obtain an overall image.

[0006] In one embodiment, the imaging module further includes a data processing unit, which is communicatively connected to at least one of the probes and obtains the local imaging data based on the X-ray signals acquired by the probes.

[0007] In one embodiment, the motion control unit includes a robotic arm, which controls the motion trajectory of the probe.

[0008] In one embodiment, the SPECT imaging system further includes a central motion control module, which is communicatively connected to the motion control units in all the imaging modules. The central motion control module is used to send motion control information to the motion control units based on the relative position information of the probe, and the motion control units are used to control the motion trajectory of the probe based on the motion control information.

[0009] In one embodiment, the SPECT imaging system further includes: an attitude monitoring module, which is communicatively connected to the central motion control module. The attitude monitoring module is used to acquire the attitude information of the object under test, and the central motion control module is also used to send motion control information to the motion control unit based on the attitude information and the relative position information of the probe.

[0010] In one embodiment, the data integration module is communicatively connected to the attitude monitoring module, and the data integration module is further configured to integrate multiple local imaging data according to the attitude information to obtain a whole-body image.

[0011] In one embodiment, the SPECT imaging system further includes a data display module, which is communicatively connected to the data integration module, and is used to display multiple local images and / or the overall image; wherein the local images are obtained from the local imaging data.

[0012] Secondly, this application also proposes an imaging method for a SPECT imaging system, which is applied to the SPECT imaging system described in the first aspect embodiment above;

[0013] The method includes: selecting multiple target probes according to a scanning protocol, each target probe having at least one corresponding motion control unit; determining the spatial distribution of the multiple target probes and their corresponding collimator types; scanning the object under test using the multiple target probes and their corresponding collimators to obtain multiple target imaging data; wherein the target imaging data is local imaging data obtained by scanning a local area of ​​the object under test; and obtaining a target image based on the multiple target imaging data.

[0014] In one embodiment, the step of scanning the object under test using multiple target probes and their corresponding collimators includes: acquiring the attitude information of the object under test in real time; acquiring the relative distance between each target probe; and adjusting the spatial distribution of the multiple target probes according to the attitude information and the relative distance.

[0015] Thirdly, this application also proposes a SPECT imaging device, including the SPECT imaging system described in the first aspect embodiment above;

[0016] The device includes: a frame; multiple detectors, which are detachably mounted on the frame via corresponding robotic arms; wherein the robotic arms can independently control the movement of the corresponding detectors.

[0017] The aforementioned SPECT imaging system, method, and device are equipped with multiple imaging modules. Each module can scan and image a local area of ​​the object under test, thereby obtaining corresponding local imaging data. Simultaneously, a data integration module integrates the multiple local imaging data to obtain a complete image. Since each imaging module includes a motion control unit and a probe, their scanning processes are relatively independent. When multiple areas of the object under test need to be scanned, multiple imaging modules can perform simultaneous scanning, thus enabling parallel scanning and improving scanning efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the modules of a SPECT imaging system in one embodiment;

[0020] Figure 2 This is a schematic diagram of the imaging module in one embodiment;

[0021] Figure 3 This is a schematic diagram of the layout of the imaging module in one embodiment;

[0022] Figure 4 This is a schematic diagram of the layout of the imaging module in another embodiment;

[0023] Figure 5 This is a schematic diagram of the layout of the imaging module in yet another embodiment;

[0024] Figure 6 This is a schematic diagram of the central motion control module in one embodiment;

[0025] Figure 7 This is a schematic diagram of the attitude monitoring module in one embodiment;

[0026] Figure 8This is a schematic diagram of the SPECT imaging system modules in another embodiment;

[0027] Figure 9 This is a schematic diagram of the data display module in one embodiment;

[0028] Figure 10 This is a schematic diagram of the data display module in another embodiment;

[0029] Figure 11 This is a schematic flowchart of an imaging method for a SPECT imaging system in one embodiment;

[0030] Figure 12 This is a schematic diagram of the scanning process for the object under test in one embodiment;

[0031] Figure 13 This is a schematic diagram of a SPECT imaging apparatus in one embodiment. Detailed Implementation

[0032] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0034] It is understood that the terms "first," "second," etc., used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. Furthermore, in the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if there is transmission of electrical signals or data between the connected objects.

[0036] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.

[0037] As described in the background section, in many cases, patients may require examinations of multiple sites due to various symptoms or suspected multiple diseases. Traditional SPECT systems typically require scanning each site sequentially, which is not only time-consuming but can also incur additional time costs due to patient repositioning and repositioning. For patients requiring examination of multiple sites, the lengthy scanning process can cause discomfort and even hinder the smooth progress of diagnosis. Although traditional SPECT systems can generate images reflecting the distribution of radioisotopes in the body, image quality may be affected to some extent due to factors such as long scanning times and patient repositioning. Furthermore, because SPECT systems cannot simultaneously capture gamma-ray signals from multiple body parts of the patient, this can lead to insufficient comprehensiveness and uniformity of data collection, thereby affecting the accuracy of subsequent image reconstruction and analysis.

[0038] For the reasons mentioned above, this application provides a SPECT imaging system, imaging method, and SPECT imaging device to solve the aforementioned technical problems.

[0039] In one embodiment, such as Figure 1 As shown, a SPECT imaging system is provided, including: multiple imaging modules and a data integration module. Each imaging module is used to scan a local area of ​​the object under test to obtain local imaging data; the data integration module is communicatively connected to the multiple imaging modules and is used to integrate the multiple local imaging data to obtain an overall image.

[0040] Specifically, the SPECT imaging system in this embodiment includes multiple imaging modules (imaging module 1, imaging module 2, ..., imaging module N). Each imaging module is used to scan a local area of ​​the subject and obtain corresponding local imaging data. For example, the SPECT imaging system has three imaging modules, which are used to scan the head, chest, and legs of the subject respectively, thereby obtaining head imaging data, chest imaging data, and leg imaging data. The imaging modules can be configured with a single probe, dual probe, triple probe, or full-ring structure, as long as they can complete the scanning of the corresponding local area of ​​the subject. During scanning, the imaging modules can record timestamps at a certain frequency in the acquired data and record signal positions in the data. Combined with a preset coordinate system, the data obtained from simultaneous scanning is integrated and analyzed in a unified manner to obtain multiple local imaging data.

[0041] The data integration module communicates with multiple imaging modules. It acquires multiple local imaging data points sent by these modules and integrates them to obtain the final overall image. During integration, the module utilizes the positional information within the generated local imaging data to merge overlapping portions and obtain the final overall image. It is understandable that blank areas may exist in the generated overall image if the multiple local imaging data points do not completely cover the entire object under test.

[0042] In this SPECT imaging system, different imaging modules can scan different local areas independently. When multiple local areas need to be scanned, multiple imaging modules can perform simultaneous scanning, thus enabling parallel scanning of the subject and improving scanning efficiency. Furthermore, when multiple imaging modules work simultaneously, they can capture gamma-ray signals from different local areas at the same time, enhancing the system's flexibility and adaptability. Parallel operation of multiple imaging modules allows for more comprehensive and uniform data collection, resulting in higher resolution, clearer, and less noisy images, reducing data loss and artifacts caused by patient movement or repositioning. Simultaneously, it shortens scan time, reducing patient discomfort and improving the patient's examination experience. Moreover, the reduced examination time allows patients to complete the examination and leave the hospital in a shorter time, minimizing their stay in the hospital. Multiple imaging modules enable the SPECT imaging system to adapt to various examination needs, whether for a single symptom or multiple suspected diseases, allowing for rapid and accurate completion.

[0043] In one embodiment, each imaging module includes at least one motion control unit and a probe. The motion control unit controls the motion trajectory of the probe. Specifically, in this embodiment, the imaging module may consist of one or more probes (probe 1, probe 2, ..., probe N), depending on its structure. When the probes in the imaging module need to move, a motion control unit is connected to each probe. For example, motion control unit 1 is connected to probe 1, motion control unit 2 is connected to probe 2, ..., and motion control unit N is connected to probe N. The motion control unit can precisely control the motion trajectory of the probe, ensuring that the probe accurately aligns with the local area of ​​the object under test, thereby enabling the probe to capture high-quality image data. The motion control unit plans the motion trajectory of the probe according to a preset scanning protocol or motion command. For example, the motion control unit can control the probe to rotate around the local area to acquire a tomographic image of the local area; or control the probe to translate to acquire a planar image of the local area. It is understood that the motion trajectory includes parameters such as the probe's rotation speed, rotation angle, and linear movement distance to ensure that the probe fully and uniformly covers the local area. In some other embodiments, when the probes in the imaging module do not need to move, a motion control unit may not be provided in the imaging module. For example, when the imaging module has a full ring structure or a heart-specific structure, the probe position in the imaging module is fixed and does not need to move. In this case, there is no need to set up a motion control unit.

[0044] In one embodiment, such as Figure 2 As shown, the imaging module also includes a data processing unit, which is communicatively connected to at least one probe and obtains local imaging data based on the X-ray signals acquired by the probe.

[0045] Specifically, each probe in the imaging module can obtain a radiation signal based on the gamma rays emitted from its corresponding local area. The probe consists of components such as a collimator, crystal, and photomultiplier tube (PMT). The collimator limits the range and direction of gamma rays entering the crystal, allowing only rays within a certain incident direction and range to pass through. The crystal converts the detected high-energy gamma rays into a large quantity of lower-energy optical signals, and the photomultiplier tube converts the optical signals into electrical signals, thus obtaining the radiation signal. Understandably, the collimators of multiple probes in the imaging module can be different. For example, in a dual-probe structure, the two probes can use different collimators, suitable for routine calibration systems or flexible selection based on testing requirements in actual use. The data processing unit communicates with at least one probe and acquires the radiation signals emitted by the probe. After receiving the corresponding radiation signals, the data processing unit converts these signals into local imaging data according to a preset data processing algorithm. Local imaging data can be tomographic or projection image data, reflecting the distribution of radionuclides within a local area, thereby assisting doctors in disease diagnosis.

[0046] The probe distribution of the imaging module in the SPECT imaging system of this application is described in detail below with several specific embodiments. For example... Figure 3 As shown, the SPECT imaging system has three imaging modules: imaging module 1, imaging module 2, and imaging module 3. These are used to scan and image the legs, chest, and head, respectively. Each imaging module is a single-probe structure; that is, imaging module 1 consists of probe 1, imaging module 2 consists of probe 2, and imaging module 3 consists of probe 3. Figure 4 As shown, the SPECT imaging system has two imaging modules, namely imaging module 1 and imaging module 2, which are used to scan and image the legs and head respectively. Each imaging module is configured with a dual-probe structure, that is, imaging module 1 consists of probe 1 and probe 2, and imaging module 2 consists of probe 3 and probe 4. Figure 5 As shown, the SPECT imaging system has three imaging modules: imaging module 1, imaging module 2, and imaging module 3. These modules are used to scan and image the legs, chest, and head, respectively. Imaging modules 1 and 2 are single-probe structures, while imaging module 3 is a dual-probe structure. Specifically, imaging module 1 consists of probe 1, imaging module 2 consists of probe 2, and imaging module 3 consists of probes 3 and 4. It is understood that the imaging modules in this embodiment are generally arranged along the length of the bed board to scan and image different local areas of the object under test.

[0047] In one embodiment, the motion control unit includes a robotic arm, which controls the motion trajectory of the probe.

[0048] Specifically, in this embodiment, the motion control unit controls the probe's motion trajectory via a robotic arm. Robotic arms typically have multiple degrees of freedom, enabling complex movements in three-dimensional space. This flexibility allows the probe to cover a larger area to accommodate different patient body types. For example, the robotic arm uses joints (such as rotary joints and translational joints) and actuators (such as motors and hydraulic cylinders) to control the probe's movement along a predetermined trajectory, allowing the probe to achieve six degrees of freedom: three translational and three rotational degrees of freedom. Complex probe motion trajectories can be achieved by controlling the joint rotation or translation through motion programs set in the motion control unit. Furthermore, robotic arms are typically equipped with various sensors to detect parameters such as the probe's position, angle, and speed. These sensors feed real-time data back to the motion control unit, which then makes necessary adjustments and optimizations based on this data to ensure the probe's motion trajectory always meets preset requirements. In this way, the robotic arm can precisely control the probe's motion trajectory, ensuring that the probe acquires data at the optimal position and angle, thereby improving the clarity and resolution of the obtained local imaging data.

[0049] In one embodiment, such as Figure 6 As shown, the SPECT imaging system also includes a central motion control module, which is communicatively connected to the motion control units in all imaging modules. The central motion control module is used to send motion control information to the motion control units based on the relative position information of the probe, and the motion control units are used to control the motion trajectory of the probe based on the motion control information.

[0050] Specifically, in this embodiment, a central motion control module is used to plan and coordinate the motion within the SPECT imaging system. For ease of description, Figure 6The imaging module in the system is configured with one probe and one motion control unit. In some other embodiments, the imaging module may also contain multiple probes and multiple motion control units. A central motion control module communicates with all motion control units, enabling it to send motion control information to each unit in real time, thereby controlling the probe's trajectory. Depending on the structure of the motion control unit, the motion control information includes parameters such as probe position, velocity, and acceleration, as well as instructions on when to start, stop, or change the trajectory. Simultaneously, this embodiment also incorporates the relative position information of the probes to generate corresponding motion control information, preventing collisions during movement and improving the safety and robustness of motion control. In some embodiments, the relative position information can be established using the bed board or frame as a reference to create a three-dimensional spatial coordinate axis. Based on this coordinate axis, the relative positional relationship between each probe and other probes is obtained, achieving coordinated control of all probes and preventing interference between them. In some other embodiments, a distance sensor or other monitoring unit can be introduced into the SPECT imaging system to determine the relative position information of the probes, and also to perform auxiliary control of the probe position.

[0051] In one embodiment, such as Figure 7 As shown, the SPECT imaging system also includes: an attitude monitoring module, which is communicatively connected to the central motion control module. The attitude monitoring module is used to acquire the attitude information of the object under test, and the central motion control module is also used to send motion control information to the motion control unit based on the attitude information and the relative position information of the probe.

[0052] Specifically, in this embodiment, a posture monitoring module is used to acquire the posture information of the subject under test. Posture information includes body position, movement state, and any minute movements that may affect image quality. The posture monitoring module can monitor and record posture changes of the subject under test in real time using infrared sensors, cameras, lidar, etc. After acquiring the posture information, the posture monitoring module sends it to the central motion control module. Upon receiving the posture information, the central motion control module dynamically adjusts the motion control information based on the posture information, thereby making the probe's motion trajectory more consistent with the patient's current posture and improving the quality of the obtained local imaging data. Simultaneously, when adjusting the motion control information, the central motion control module also needs to consider the relative position information of the probe to prevent collisions during movement.

[0053] In one embodiment, such as Figure 8As shown, the data integration module is communicatively connected to the posture monitoring module. The data integration module is also used to integrate multiple local imaging data based on posture information to obtain a full-body image. Specifically, in this embodiment, the data integration module is also communicatively connected to the posture monitoring module. The data integration module is used to acquire posture information sent by the posture monitoring module. By combining the posture information and multiple local imaging data, it can supplement areas not scanned by the probe, thereby obtaining a more vivid full-body image, which is convenient for doctors to view in real time.

[0054] In one embodiment, the SPECT imaging system further includes a data display module, which is communicatively connected to the data integration module. The data display module is used to display multiple local images and / or overall images. Specifically, in this embodiment, the data display module is configured to receive and display multiple local image and / or overall image data sent by the data integration module. The local images are obtained by the data integration module after processing the local imaging data. It is understood that the user can select the local and overall images to be displayed through a user interface.

[0055] Specific examples, such as Figure 9 The image shown is a schematic diagram of the image displayed by the data display module in one embodiment. The SPECT imaging system has two imaging modules used to scan the chest and legs of the subject, respectively, obtaining local image 1 and local image 2, which are then displayed in the data display module. The data integration module integrates the two local images, merging overlapping areas (e.g., retaining information from only one local image) to obtain the corresponding overall image, which is then displayed in the data display module. Figure 10 The image shown is a schematic diagram of the image displayed by the data display module in another embodiment. The SPECT imaging system has two imaging modules, used to scan the chest and legs of the subject respectively, thus obtaining local image 1 and local image 2, which are then displayed in the data display module. Simultaneously, the data integration module also acquires posture information sent by the posture monitoring module. By combining the posture information and the two local images, it can supplement areas not scanned by the probe, thereby obtaining a more comprehensive full-body image, which is also displayed in the data display module.

[0056] In one embodiment, such as Figure 11 As shown, this application also proposes an imaging method for a SPECT imaging system, applied to the SPECT imaging system in the above embodiments. The imaging method includes the following steps:

[0057] Step S110: Select multiple target probes according to the scanning protocol.

[0058] Specifically, the user determines the body parts to be examined based on the symptoms of the subject and assesses whether multi-probe parallel imaging is necessary. If multi-probe parallel imaging is required, the user inputs corresponding control commands into the SPECT imaging system via the user interface. The SPECT imaging system determines the appropriate scanning protocol based on the input control commands and selects multiple target probes according to the scanning protocol. Each target probe is the probe to be scanned, and each target probe has at least one corresponding motion control unit. The motion control unit is responsible for controlling the probe's movement trajectory, ensuring that the probe can accurately align with a specific local area of ​​the subject.

[0059] Step S120: Determine the spatial distribution of multiple target probes and their corresponding collimator types.

[0060] Specifically, after identifying the target probe, the SPECT imaging system determines the spatial distribution of multiple target probes. This spatial distribution describes the relative positions of the multiple target probes. Simultaneously, for each target probe, the collimator type corresponding to that probe needs to be determined. The collimator type determines the probe's field of view and resolution, and can be chosen based on the specific type of imaging required.

[0061] Step S130: Use multiple target probes and their corresponding collimators to scan the object under test to obtain multiple target imaging data.

[0062] Specifically, after the SPECT imaging system identifies the target probe, it uses multiple target probes and their corresponding collimators to scan a local area of ​​the object under test, thereby obtaining multiple target imaging data. The target imaging data consists of local imaging data obtained by scanning a local area of ​​the object under test.

[0063] Understandably, when using multiple target probes for parallel scanning, a scanning parameter can be set for each target probe to suit the scanning needs of different body parts. For example, scanning parameters may include: scan time, the dwell time of each probe at each position, which affects image resolution and noise levels; scan angle, the range of angles each probe rotates around the patient to ensure coverage of the required imaging area; scan speed, the rate at which each probe moves, which affects data acquisition speed and image quality; acquisition sensitivity, the sensitivity setting of each probe, which affects signal reception and image quality; gain and offset, probe calibration parameters used to ensure signal accuracy and consistency; time synchronization, ensuring all probes start and end scanning at the same time, which is crucial for image registration and reconstruction; and position calibration, using a calibration source to verify and correct the relative position and angle between probes to ensure image consistency. SPECT imaging systems determine corresponding scanning parameters based on different body parts (such as the head, chest, abdomen, etc.).

[0064] Step S140: Obtain a target image based on multiple target imaging data.

[0065] Specifically, the SPECT imaging system scans a local area of ​​the object under test and obtains multiple target imaging data. Then, based on the relevant parameters of the target imaging data, it integrates the target imaging data to obtain the overall target image.

[0066] In some embodiments, the process of determining the target image includes: image preprocessing, which preprocesses the target imaging data captured by each probe, including denoising and contrast enhancement, to improve image quality; feature extraction, which extracts feature points or feature regions from the preprocessed image. These feature points or regions should have similar appearances in different images for subsequent registration; image registration, which uses the extracted feature points or regions to align the images captured by different target probes using a registration algorithm (such as affine transformation, rigid body transformation, or more complex nonlinear transformation) to ensure that the same anatomical structure in the image is located in the same position in different images; image fusion, which fuses the images from different probes after registration to generate a complete target image. During the fusion process, differences in brightness, contrast, etc., between images need to be considered to ensure the quality of the fused image; and quality assessment, which assesses the quality of the fused image to check for obvious stitching gaps, artifacts, etc. If necessary, the stitching parameters can be adjusted and the image can be re-stitched.

[0067] In some embodiments, images acquired by target probes with different collimators can also be integrated, but the specific process differs from that for images acquired with the same collimator. The following is the process of integrating images acquired by target probes with different collimators to obtain the target image: Collimator Correction: Before stitching, collimator correction is required for images acquired by different collimators. This is because different collimators can cause differences in resolution, contrast, etc. Correction can minimize these differences, resulting in better consistency when stitching images acquired by different collimators; Image Preprocessing and Feature Extraction: Similar to stitching images with the same collimator, preprocessing and feature extraction are required for images acquired by different collimators. However, due to the differences in collimators, the feature extraction process is more refined and complex; Image Registration: During registration, the influence of different collimators on the image needs to be considered. More complex registration algorithms or additional registration parameters are required to ensure accurate image alignment. Image fusion and correction: In the fusion process, in addition to considering the differences in brightness and contrast between images, it is also necessary to consider the impact of collimator differences on the fusion result. The fusion algorithm needs to be adjusted to obtain a better fusion effect. At the same time, further correction is required after fusion to eliminate possible stitching gaps and artifacts. Quality assessment and adjustment: The quality of the fused image is assessed to check for obvious stitching problems. If necessary, the stitching parameters and correction algorithm can be adjusted, and the stitching and correction can be repeated.

[0068] In one embodiment, such as Figure 12 As shown, step S130, which involves scanning the object under test using multiple target probes and their corresponding collimators, includes:

[0069] Step S131: Acquire the posture information of the object under test in real time.

[0070] Specifically, in this embodiment, the SPECT imaging system also acquires the subject's posture information in real time through a posture monitoring module during the scanning process. The posture monitoring module can monitor and record posture changes of the subject in real time using infrared sensors, cameras, lidar, etc. After acquiring the posture information, the posture monitoring module sends it to the central motion control module. Upon receiving the posture information, the central motion control module dynamically adjusts the motion control information based on the posture information, thereby making the probe's motion trajectory more consistent with the patient's current posture and improving the quality of the obtained local imaging data.

[0071] Step S132: Obtain the relative distance between each target probe.

[0072] Specifically, during the scanning process of the object under test, the SPECT imaging system also acquires the relative distance between each target probe in real time. When determining the relative distance between each target probe, a Cartesian coordinate system is established with a fixed point on the gantry as the origin. This origin is ensured to be stable and easily identifiable in space. The position of each target probe can be mapped to this three-dimensional coordinate system to determine their relative distance. Precise ranging instruments (such as laser rangefinders) or integrated positioning systems (such as indoor GPS, UWB positioning systems, etc.) can be used to determine the initial positions of the gantry, probes, bed, and object under test, and these positions are mapped to the three-dimensional coordinate system. Once the positions in the coordinate system are determined, a mathematical model can be constructed to calculate the relative distance between the probes to ensure they do not interfere with each other during movement.

[0073] Step S133: Adjust the spatial distribution of multiple target probes based on attitude information and relative distance.

[0074] Specifically, traditional probe motion control methods typically rely on preset scanning trajectories, failing to respond in real-time to changes in patient position. The SPECT imaging system of this application, during the scanning process, adjusts the spatial distribution of multiple target probes based on the patient's posture information and the relative distance between each probe. By dynamically adjusting the probe trajectory, the system avoids unnecessary repetitive scanning, thereby reducing patient radiation exposure. Simultaneously, because the probes can more flexibly adapt to changes in patient position, radiolabeled drugs can be utilized more effectively, improving scanning efficiency.

[0075] In one embodiment, such as Figure 13 As shown in the embodiments, this application also proposes a SPECT imaging device, including the SPECT imaging system in the above embodiments. The SPECT imaging device includes: a frame and multiple detectors, the multiple detectors being detachably mounted on the frame via corresponding robotic arms; wherein, the robotic arms can independently control the movement of the corresponding detectors.

[0076] Specifically, the gantry is the supporting structure of the entire SPECT imaging system, ensuring the stable and accurate operation of all components. The detector, a key component for capturing gamma-ray signals, is responsible for converting the received signals into data usable for image reconstruction. The robotic arm allows for flexible mounting of the detectors on the gantry, while also facilitating disassembly and maintenance. This setup enables the SPECT imaging system to be quickly adjusted to different examination needs, improving equipment utilization and adaptability. With the continuous development of medical imaging technology, the performance and functionality of the detectors are constantly improving. By connecting the detectors via the robotic arm, users can easily replace old detectors and upgrade to newer, more efficient ones. The robotic arm's independent control capability means that each detector can be moved to the optimal position as needed to capture the clearest images, helping to reduce examination time, improve diagnostic accuracy, and allowing users to personalize settings and adjustments according to the specific circumstances of the subject and examination requirements.

[0077] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments described above. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0078] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0079] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A SPECT imaging system, characterized in that, include: Multiple imaging modules are provided, each of which is used to scan a local area of ​​the object under test to obtain local imaging data; wherein, each of the imaging modules includes at least one motion control unit and a probe, and the motion control unit is used to control the motion trajectory of the probe; The data integration module is communicatively connected to multiple imaging modules and is used to integrate multiple local imaging data to obtain an overall image.

2. The SPECT imaging system according to claim 1, characterized in that, The imaging module further includes a data processing unit, which is communicatively connected to at least one of the probes and obtains the local imaging data based on the X-ray signals acquired by the probes.

3. The SPECT imaging system according to claim 1, characterized in that, The motion control unit includes a robotic arm, which controls the motion trajectory of the probe.

4. The SPECT imaging system according to claim 1, characterized in that, Also includes: A central motion control module is communicatively connected to the motion control unit in all the imaging modules. The central motion control module is used to send motion control information to the motion control unit according to the relative position information of the probe. The motion control unit is used to control the motion trajectory of the probe according to the motion control information.

5. The SPECT imaging system according to claim 4, characterized in that, Also includes: The attitude monitoring module is communicatively connected to the central motion control module. The attitude monitoring module is used to acquire the attitude information of the object under test. The central motion control module is also used to send motion control information to the motion control unit based on the attitude information and the relative position information of the probe.

6. The SPECT imaging system according to claim 5, characterized in that, The data integration module is communicatively connected to the attitude monitoring module. The data integration module is also used to integrate multiple local imaging data according to the attitude information to obtain a whole-body image.

7. The SPECT imaging system according to any one of claims 1 to 6, characterized in that, Also includes: The data display module is communicatively connected to the data integration module and is used to display multiple local images and / or the overall image; wherein the local images are obtained from the local imaging data.

8. An imaging method for a SPECT imaging system, characterized in that, Applied to the SPECT imaging system according to any one of claims 1 to 7, the method comprises: Multiple target probes are selected according to a scanning protocol, and each target probe has at least one corresponding motion control unit. Determine the spatial distribution of the multiple target probes and their corresponding collimator types; Multiple target probes and their corresponding collimators are used to scan the object under test to obtain multiple target imaging data; wherein the target imaging data is local imaging data obtained by scanning a local area of ​​the object under test; A target image is obtained based on multiple target imaging data.

9. The imaging method of the SPECT imaging system according to claim 8, characterized in that, The step of scanning the object to be tested using multiple target probes and their corresponding collimators includes: Real-time acquisition of the attitude information of the object under test; Obtain the relative distance between each of the target probes; The spatial distribution of the multiple target probes is adjusted based on the attitude information and the relative distance.

10. A SPECT imaging device, characterized in that, The device comprising the SPECT imaging system according to any one of claims 1 to 7, wherein the device includes: frame; Multiple detectors are detachably mounted on the frame via corresponding robotic arms; wherein the robotic arms can independently control the movement of the respective detectors.

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