Motion Corrected Radial MP-nRAGE

Conventional MPRAGE (Magnetization-Prepared Rapid Gradient Echo) T1w acquisitions are highly sensitive to head motion and physiologic motions from flow and eye movements. The PROPELLER technique2 original introduced for T2 weighted imaging and later modified for T1 FLAIR imaging3 corrects well for in-plane motion, but not for through plane motion. The aim of this work is to develop a technique for T1w imaging that is (1) less sensitive to motion (2) can detect motion in 3D and finally (3) can retrospectively correct for occasional 3D motions from twitching, swallowing, coughing, or adjusting for comfort.

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