Abstract #1377

Head Motion Tracking in MRI Using Novel Tiny Wireless Tracking Markers and Projection Signals

Liyuan LIANG¹, Chim-Lee Cheung², Ge Fang², Justin Di-Lang Ho², Chun-Jung Juan^3,4,5, Hsiao-Wen Chung⁶, Ka-Wai Kwok², and Hing-Chiu Chang¹

¹Department of Diagnostic Radiology, The University of Hong Kong, Hong Kong, Hong Kong, ²Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, Hong Kong, ³Department of Medical Imaging, China Medical University Hsinchu Hospital, Hsinchu, Taiwan, ⁴Department of Radiology, School of Medicine, College of Medicine, China Medical University, Taichung, Taiwan, ⁵Department of Medical Imaging, China Medical University Hospital, Taichung, Taiwan, ⁶Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan

Head motion is a significant problem for the challenging populations, and the wireless tracking coils has previously been proposed to enable prospective motion correction in MRI. In this study, we evaluated the tracking performance of a novel tiny wireless tracking marker by using a linear motion phantom, and tested the feasibility in omnidirectional 3D head motion tracking using three tiny wireless tracking markers. Both phantom and in-vivo results suggest that the novel tiny wireless tracking markers can provide good fidelity in 3D position tracking, with improved subject comfort and better flexibility in fixation of markers.

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