中国医疗设备2025，Vol.40Issue(2)：1-5,23,6.DOI:10.3969/j.issn.1674-1633.20240370
基于单目视觉的头部磁共振运动伪影矫正系统研究
Research on Head Magnetic Resonance Motion Artifacts Correction System Based on Monocular Vision
摘要
Abstract
Objective To design a head magnetic resonance imaging motion correction system based on monocular vision to correct head magnetic resonance motion artifacts,so as to improve imaging quality and provide more accurate and reliable imaging information.Methods The system was composed of magnetic compatible monocular camera,optical positioning bracket and data acquisition communication module.The monocular camera was installed in the magnetic resonance imaging cavity by optical positioning bracket to record facial information in real-time.Based on facial reconstruction and motion detection algorithm,facial reconstruction and 6-degree-of-freedom rigid motion detection of the head were realized.Through the cross calibration between magnetic resonance and camera,the retrospective correction of magnetic resonance motion artifacts was realized by using the detected motion information.Results The face reconstruction accuracy of the system was 0.57 mm,the tracking accuracy of rotation and translation movements was 0.42°±0.06° and(0.64±0.12)mm,respectively,and the head magnetic resonance motion artifacts were significantly reduced.Conclusion Based on monocular vision,high precision 6-degree-of-freedom motion tracking and magnetic resonance motion artifact correction can be achieved to improve the quality of magnetic resonance imaging and provide more accurate image information for doctors.关键词
单目视觉/核磁共振成像(MRI)/刚性运动追踪/运动伪影矫正/人脸重建/交叉标定Key words
monocular vision/magnetic resonance imaging/rigid motion tracking/motion artifact correction/facial reconstruction/cross calibration分类
医药卫生引用本文复制引用
蒋晗,陈慧军,王春尧,窦佳琦,黎睿,徐子茗..基于单目视觉的头部磁共振运动伪影矫正系统研究[J].中国医疗设备,2025,40(2):1-5,23,6.基金项目
国家自然科学基金委员会重点项目(81930119) （81930119）
"十三五"国家重点研发计划(2017YFC0108700) （2017YFC0108700）
北京市自然科学基金重点研究专题(Z190024) （Z190024）
北京市科委"揭榜挂帅"项目(Z231100004823012). （Z231100004823012）
