Abstract #4343
Motion Corrected Radial MP-nRAGE
Steven Kecskemeti 1 and Andrew L Alexander 2
1
Waisman Center, University of Wisconsin,
Madison, WI, United States,
2
Medical
Physics, University of Wisconsin, WI, United States
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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