US-20260123897-A1 - SYSTEM AND METHOD FOR MEDICAL IMAGING

Abstract

Embodiments of the present disclosure provide a system and a method for medical imaging. The system includes at least one storage device including a set of instructions, and at least one processor configured to communicate with the at least one storage device. When executing the set of instructions, the at least one processor is configured to direct the system to perform operations including: obtaining first image data of the subject acquired by one or more first imaging devices; determining, based on the first image data of the subject, pose information of the subject; determining, based on the pose information of the subject, reference motion information of each of at least one of one or more detectors of a second imaging device; and controlling a movement of each of the at least one of the one or more detectors based on the reference motion information for the second imaging device acquiring second image data of the subject.

Inventors

• Tong Li
• Tao Chen
• Beien WANG
• Lei Shi

Assignees

• SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.

Dates

Publication Date

20260507

Application Date

20251104

Priority Date

20241104

Claims (20)

1. 1 . A system, comprising: at least one storage device including a set of instructions; and at least one processor configured to communicate with the at least one storage device, wherein when executing the set of instructions, the at least one processor is configured to direct the system to perform operations including: obtaining first image data of a subject acquired by one or more first imaging devices; determining, based on the first image data of the subject, pose information of the subject; determining, based on the pose information of the subject, reference motion information of each of at least one of one or more detectors of a second imaging device; and controlling a movement of each of the at least one of the one or more detectors based on the reference motion information for the second imaging device to acquire second image data of the subject.
2. 2 . The system of claim 1 , wherein the first image data of the subject is acquired by the one or more first imaging devices during a scan of the subject or before the scan of the subject.
3. 3 . The system of claim 1 , wherein the determining, based on the pose information of the subject, reference motion information of each of at least one of one or more detectors of a second imaging device includes: obtaining initial motion information based on a first portion of one or more scanning parameters and the pose information; and determining the reference motion information by optimizing the initial motion information based on a second portion of the one or more scanning parameters.
4. 4 . The system of claim 3 , wherein determining the reference motion information by optimizing the initial motion information based on a second portion of the one or more scanning parameters includes: determining one or more optimization objectives based on the second portion of the one or more scanning parameters; and determining the reference motion information by optimizing the initial motion information based on the one or more optimization objectives using an optimization model, wherein the reference motion information satisfies the one or more optimization objectives.
5. 5 . The system of claim 4 , wherein the optimization model is constructed based on an objective function, one or more constraints on at least one of reference path parameters of the reference motion information, the objective function being constructed based on the one or more optimization objectives and initial path parameters of the initial motion information, and the optimizing the initial motion information based on the one or more optimization objectives using the optimization model includes: optimizing the initial motion information by performing an iterative process based on the objective function, one or more constraints, and one or more optimization objectives to adjust the initial motion information.
6. 6 . The system of claim 4 , wherein the optimization model is a first trained machine learning model, and optimizing the initial motion information based on the one or more optimization objectives includes: inputting the initial motion information and the one or more optimization objectives into the first trained machine learning model to generate the reference motion information.
7. 7 . The system of claim 1 , wherein the determining, based on the pose information of the subject, reference motion information of each of at least one of one or more detectors of a second imaging device includes: determining, based on a scanning range of the subject and the pose information, a motion range of the each of at least one of one or more detectors; and determining the reference motion information based on the motion range.
8. 8 . The system of claim 1 , wherein the determining, based on the pose information of the subject, reference motion information of each of at least one of one or more detectors of a second imaging device includes: determining, based on the pose information of the subject, the reference motion information using a second trained machine learning model.
9. 9 . The system of claim 8 , wherein an input of the second trained machine learning model includes the pose information of the subject and at least one of medical image data acquired by a medical imaging device, physiological status information of the subject, or one or more scanning parameters of the subject, wherein the physiological status information of the subject is determined using the first imaging device.
10. 10 . The system of claim 1 , wherein a count of the one or more detectors exceeds 1, and at least a portion of the one or more detectors are arranged along an axis of the second imaging device.
11. 11 . The system of claim 10 , wherein controlling a movement of each of the at least one of the one or more detectors based on the reference motion information for the second imaging device acquiring second image data of the subject includes: controlling the one or more detectors to move simultaneously based on the reference motion information of each of the one or more detectors to acquire the second image data of different portions of the subject during a same time period, and the operations further include: determining target image data of the subject based on the second image data of the different portions of the subject.
12. 12 . The system of claim 10 , wherein the second imaging device includes multiple detector modules, each of the multiple detector modules includes at least one of the one or more detectors and a robot joint assembly for providing multiple movement freedoms of the one of the one or more detectors, and each of the multiple detector modules includes a first controller configured to control a component of the robot joint assembly to move based on the reference motion information.
13. 13 . The system of claim 1 , wherein at least one of the one or more detectors is detachably connected with the second imaging device, and one of the one or more first imaging devices is arranged on one of the one or more detectors or on a ceiling of a scanning room where the second imaging device is located.
14. 14 . The system of claim 10 , wherein the second image device includes multiple detector modules, each of the multiple detector modules includes one of the one or more detectors, a first controller, and a robot joint assembly for providing multiple movement freedoms of the one of the one or more detectors, the second imaging device further includes a second controller in communication with the first controller of each of the multiple detector modules, wherein the second controller is configured to determine the reference motion information of each of the one or more detectors based on the pose information, the one or more scanning parameters, and position information of the one or more detectors, and transmit the reference motion information of each of the one or more detectors to a corresponding first controller.
15. 15 . The system of claim 1 , wherein the pose information of the subject includes position information of a first contour of the subject, and the determining, based on the pose information of the subject, reference motion information of each of at least one of one or more detectors of a second imaging device includes: obtaining a second contour of a couch where the subject is located; determining a third contour by combining the first contour and the second contour; and determining the reference motion information based on the third contour.
16. 16 . The system of claim 15 , wherein the determining the reference motion information based on the third contour includes: determining a minimum convex hull of the third contour; and determining the reference motion information based on the minimum convex hull.
17. 17 . The system of claim 15 , wherein the determining, based on the first image data of the subject, pose information of the subject includes: controlling the one of the one or more detectors to move along an axis of the second imaging device for one of the one or more first imaging device arranged on the one of the one or more detectors to acquire first sub-image data is at each of different positions; determining a first sub-contour of a portion of the subject based on the first sub-image data of the subject; and determining the first contour based on first sub-contours of different portions of the subject.
18. 18 . The system of claim 17 , wherein the second contour includes a first sub-contour and a second sub-contour associated with a surface of the couch where the subject is located, and the determining a third contour by combining the first contour and the second contour includes: combining the first sub-contour of the second contour and the first contour via the second sub-contour of the second contour.
19. 19 . A method implemented on a computing device having at least one processor and at least one storage medium including a set of instructions for processing service requests received from a requester terminal, comprising: obtaining first image data of a subject acquired by one or more first imaging devices; determining, based on the first image data of the subject, pose information of the subject; determining, based on the pose information of the subject, reference motion information of each of at least one of one or more detectors of a second imaging device; and controlling a movement of each of the at least one of the one or more detectors based on the reference motion information for the second imaging device to acquire second image data of the subject.
20. 20 . A non-transitory computer readable medium, comprising executable instructions that, when executed by at least one processor, direct the at least one processor to perform a method comprising: obtaining first image data of a subject acquired by one or more first imaging devices; determining, based on the first image data of the subject, pose information of the subject; determining, based on the pose information of the subject, reference motion information of each of at least one of one or more detectors of a second imaging device; and controlling a movement of each of the at least one of the one or more detectors based on the reference motion information for the second imaging device to acquire second image data of the subject.

Description

CROSS-REFERENCE The present disclosure claims priority to Chinese Application No. 202411998103.1 filed on Dec. 31, 2024, Chinese Application No. 202411564551.0 filed on Nov. 4, 2024, and Chinese Application No. 202411998774.8 filed on Dec. 31, 2024, the entire contents of each of which are hereby incorporated by reference. TECHNICAL FIELD The present disclosure relates to the field of medical scanning, particularly regarding a system and a method for medical imaging. BACKGROUND Single-Photon Emission Computed Tomography (SPECT) is a nuclear medicine imaging technique widely used in clinical diagnostics, particularly in cardiology, oncology, neurology, and skeletal disorders. It generates tomographic images by detecting gamma rays emitted from radiopharmaceuticals within the body, thereby assessing organ function, blood flow, and pathological conditions. Before a SPECT scan, a motion path of a detector of the SPECT needs to be determined and then the detector may be controlled to be moved according to the determined motion path. Therefore, it is desired to provide a method and a system for motion path planning for a detector of an imaging system with improved efficiency and accuracy. SUMMARY One or more embodiments of the present disclosure provide a system. The system includes at least one storage device including a set of instructions, and at least one processor configured to communicate with the at least one storage device. When executing the set of instructions, the at least one processor is configured to direct the system to perform operations including: obtaining first image data of a subject acquired by one or more first imaging devices; determining, based on the first image data of the subject, pose information of the subject; determining, based on the pose information of the subject, reference motion information of each of at least one of one or more detectors of a second imaging device; and controlling a movement of each of the at least one of the one or more detectors based on the reference motion information for the second imaging device acquiring second image data of the subject. In some embodiments, the first image data of the subject is acquired by the one or more first imaging devices during a scan of the subject or before the scan of the subject. In some embodiments, determining, based on the pose information of the subject, reference motion information of each of at least one of one or more detectors of a second imaging device includes: obtaining initial motion information based on a first portion of one or more scanning parameters and the pose information; and determining the reference motion information by optimizing the initial motion information based on a second portion of the one or more scanning parameters. In some embodiments, determining the reference motion information by optimizing the initial motion information based on a second portion of the one or more scanning parameters includes: determining one or more optimization objectives based on the second portion of the one or more scanning parameters; and determining the reference motion information by optimizing the initial motion information based on the one or more optimization objectives using an optimization model, wherein the reference motion information satisfies the one or more optimization objectives. In some embodiments, the optimization model is constructed based on an objective function, one or more constraints on at least one of reference path parameters of the reference motion information, the objective function being constructed based on the one or more optimization objectives and initial path parameters of the initial motion information, and the optimizing the initial motion information based on the one or more optimization objectives using an optimization model includes: optimizing the initial motion information by performing an iterative process based on the objective function, one or more constraints, and one or more optimization objectives to adjust the initial motion information. In some embodiments, the optimization model is a first trained machine learning model, and optimizing the initial motion information based on the one or more optimization objectives includes: inputting the initial motion information and the one or more optimization objectives into the first trained machine learning model to generate the reference motion information. In some embodiments, determining, based on the pose information of the subject, reference motion information of each of at least one of one or more detectors of a second imaging device includes: determining, based on a scanning range of the subject and the pose information, a motion range of the each of at least one of one or more detectors; and determining the reference motion information based on the motion range. In some embodiments, determining, based on the pose information of the subject, reference motion information of each of at least one of one or more detectors of