基于毫米波雷达的CT心动静止期检测与成像触发方法及设备
By using millimeter-wave radar array for non-contact acquisition and adaptive cancellation processing, combined with multi-dimensional feature scoring and system delay calibration, precise triggering during the central dynamic and static phases in the CT environment was achieved, solving the motion artifact problem and improving the quality of cardiac CT images and the success rate of scanning.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING UNIV OF POSTS & TELECOMM
- Filing Date
- 2025-11-05
- Publication Date
- 2026-07-17
AI Technical Summary
Existing CT scanning technology produces motion artifacts when the subject moves, especially in cardiac imaging and chest radiotherapy. Traditional methods such as mechanical restraint and drug intervention have problems such as poor comfort, complicated procedures and limited applicability. Millimeter-wave radar has difficulty in stably identifying the cardiac resting phase in the CT environment.
Based on the non-contact acquisition of metal interference sources and chest wall micro-motion signals by millimeter-wave radar array, the system achieves precise triggering of the cardiac quiescent phase through adaptive cancellation processing and multi-dimensional feature vector scoring, combined with system delay calibration and triggering strategy.
Stable extraction of sub-millimeter heartbeat signals in strong scattering CT environment improves cardiac CT image quality, reduces motion artifacts, increases scan success rate and clinical efficiency, and overcomes individual differences and physiological variations.
Smart Images
Figure CN121489512B_ABST