Motion detection method and apparatus for perfusion scanning procedure, ct scanning device
By segmenting the skull region and calculating the overlap index during CT perfusion scanning, the accuracy problem of patient head motion detection was solved, achieving more efficient motion detection and reducing radiation exposure, while ensuring scan quality.
CN122440221APending Publication Date: 2026-07-24NEUSOFT MEDICAL SYST CO LTD
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NEUSOFT MEDICAL SYST CO LTD
- Filing Date
- 2026-04-01
- Publication Date
- 2026-07-24
AI Technical Summary
Technical Problem
In existing technologies, the accuracy of detecting patient head movement during CT perfusion scanning is low, leading to image artifacts and diagnostic errors, increasing patient radiation exposure and reducing medical efficiency.
Method used
By acquiring the image of the current scanning circle, the skull region is segmented to generate a skull mask image, which is then compared with the target skull mask image to calculate the overlap index to assess the patient's head movement, enabling real-time judgment and corresponding measures.
Benefits of technology
It improves the accuracy of motion detection, reduces invalid data collection and patient radiation exposure, and ensures the continuity of the scanning process and data integrity.
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Smart Images
Figure CN122440221A_ABST
Abstract
The application relates to the medical imaging technical field and discloses a motion detection method and device for a perfusion scanning process and a CT scanning device, wherein the motion detection method comprises the following steps: acquiring an image of a current scanning circle; performing skull region segmentation on the image of the current scanning circle to obtain a skull mask image of the current scanning circle; comparing the skull mask image of the current scanning circle with a target skull mask image to determine an overlapping degree index; and determining the motion condition of the patient's head according to the overlapping degree index. The image reconstructed by the current scanning circle is acquired in real time during the scanning process, the image of the current scanning circle is subjected to skull region segmentation to obtain a skull mask image, and the overlapping degree index of the skull mask image of the current scanning circle and the target skull mask image is determined, so that the motion condition of the patient's head can be quantitatively evaluated, and the motion detection accuracy is improved.
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