PROMO: Real-Time Prospective Motion Correction in MRI Using Image-Based Tracking

被引:292
作者
White, Nathan [1 ]
Roddey, Cooper [2 ]
Shankaranarayanan, Ajit [3 ]
Han, Eric [3 ]
Rettmann, Dan [3 ]
Santos, Juan [5 ]
Kuperman, Josh [4 ]
Dale, Anders [2 ,4 ]
机构
[1] Univ Calif San Diego, Dept Cognit Sci, La Jolla, CA 92093 USA
[2] Univ Calif San Diego, Dept Neurosci, La Jolla, CA 92093 USA
[3] GE Healthcare, Global Appl Sci Lab, Waukesha, WI USA
[4] Univ Calif San Diego, Dept Radiol, La Jolla, CA 92093 USA
[5] Stanford Univ, Dept Elect Engn, Palo Alto, CA 94304 USA
基金
美国国家卫生研究院;
关键词
motion artifact; motion correction; Kalman filter; real-time; rigid-body; navigator; NAVIGATOR ECHOES; ADAPTIVE TECHNIQUE; REGISTRATION; FMRI;
D O I
10.1002/mrm.22176
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
Artifacts caused by patient motion during scanning remain a serious problem in most MRI applications. The prospective motion correction technique attempts to address this problem at its source by keeping the measurement coordinate system fixed with respect to the patient throughout the entire scan process. In this study, a new image-based approach for prospective motion correction is described, which utilizes three orthogonal two-dimensional spiral navigator acquisitions, along with a flexible image-based tracking method based on the extended Kalman filter algorithm for online motion measurement. The spiral navigator/extended Kalman filter framework offers the advantages of image-domain tracking within patient-specific regions-of-interest and reduced sensitivity to off-resonance-induced corruption of rigid-body motion estimates. The performance of the method was tested using off line computer simulations and online in vivo head motion experiments. In vivo validation results covering a broad range of staged head motions indicate a steady-state error of less than 10% of the motion magnitude, even for large compound motions that included rotations over 15 deg. A preliminary in vivo application in three-dimensional inversion recovery spoiled gradient echo (IR-SPGR) and three-dimensional fast spin echo (FSE) sequences demonstrates the effectiveness of the spiral navigator/extended Kalman filter framework for correcting three-dimensional rigid-body head motion artifacts prospectively in high-resolution three-dimensional MRI scans. Magn Reson Med 63:91-105, 2010. (C) 2009 Wiley-Liss, Inc.
引用
收藏
页码:91 / 105
页数:15
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