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Abstract #4092

Contact-Free Respiration Motion Monitoring Using a Markerless Structured Optical System in MRI

Chen Zhang1, Jin Liu2, Jiarui Cai2, Haikun Qi1, Jinnan Wang2, Chun Yuan2, and Huijun Chen1

1Tsinghua University, BEIJING, China, 2University of Washington, Seattle, WA, United States

Respiration motion artifacts remain a major problem in MRI, particularly at higher imaging resolution and field strength. In this study, we investigated the feasibility of using a MR-compatible in-bore camera system to perform contactless monitoring of respiratory information during MRI of human subjects. A good match to the respiratory data is apparent in terms of the timing of trough, and ICC between trigger intervals from the respiratory belt data and video-derived signals is 0.97, meaning that this optical system can monitor and correct in end-expiratory, in addition to simultaneously detecting random motion based on our previous work.

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