公开(公告)号：US20240032877A1

公开(公告)日：2024-02-01

申请号：US17875051

申请日：2022-07-27

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Chih-chieh LIU ,  Jian ZHOU ,  Qiulin TANG ,  Liang CAI ,  Zhou YU

IPC: A61B6/03 ,  A61B6/00 ,  G01N23/046

CPC classification number: A61B6/032 ,  A61B6/54 ,  G01N23/046 ,  A61B6/503

Abstract: An information processing method controls a CT scanner such that the method includes, but is not limited to, determining an X-ray irradiation period from an electrocardiogram acquired from an electrocardiography device attached to a living object to be imaged, by processing the electrocardiogram at multiple different cardiac phases; performing, by controlling a CT gantry including and rotatably supporting an X-ray source and an X-ray detector, a diagnostic CT scan in the determined X-ray irradiation period, of at least a part of the heart region, to obtain a CT image; and causing a display unit to display the obtained CT image. The method can be performed at least by an information processing apparatus including processing circuitry and/or computer instructions stored in a non-transitory computer readable storage medium for performing the method.

公开(公告)号：US20250166247A1

公开(公告)日：2025-05-22

申请号：US18516450

申请日：2023-11-21

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Qiulin TANG ,  Jian ZHOU ,  Liang CAI ,  Chih-chieh LIU ,  Zhou YU

IPC: G06T11/00 ,  G06T7/11

Abstract: A method for performing cardiac motion compensation in a computed tomography (CT) imaging system is provided. The method includes receiving projection data acquired from an imaging object by the CT imaging system. The method also includes, until a predefined termination criterion is met, iteratively reconstructing, based on estimated cardiac motion, the received projection data to generate a motion-compensated image of the imaging object, determining a vessel region of interest (ROI) within the generated motion-compensated image, and updating the estimated cardiac motion, based on an optimization cost function associated with the determined vessel ROI. The method further includes outputting, as a final reconstructed image of the imaging object, the generated motion-compensated image.