Abstract #0342

Motion Detection and Correction for Carotid Artery Wall Imaging using Structured Light

Jin Liu¹, Huijun Chen², Jinnan Wang¹, Niranjan Balu¹, Haining Liu¹, and Chun Yuan¹

¹University of Washington, Seattle, WA, United States, ²Tsinghua University, Beijing, China, People's Republic of

Carotid artery wall MRI is often affected by complex neck motion. We aimed to separate different motion components and correct them for better carotid artery wall delineation using structured light system. A healthy volunteer was scanned for 2D carotid MRI. It was demonstrated that voluntary abrupt motion, unconscious bulk motion and involuntary respiration can all be detected effectively. Both abrupt motion and bulk neck shift can be corrected for better vessel wall delineation, but the duration of abrupt motion can affect motion correction effectiveness. Bulk neck shift distance optimization by maximizing sharpness can future reduce motion artifact.

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