MRI-compatible motion platform for studying the influence of organ motion on body MRI
Joris Nofiele 1 , Qing Yuan 1 , Quinn Torres 1 , Mohammad Kazem 2 , Ken Tatebe 1 , Ivan Pedrosa 1,3 , and Rajiv Chopra 1,3
Radiology, University of Texas Southwestern
Medical Center, Dallas, Texas, United States,
Research, Sunnybrook Research Institute, Toronto,
Advanced Imaging Research
Center, University of Texas Southwestern Medical Center,
Dallas, Texas, United States
Abdominal MRI is challenging due to respiratory motion.
Compensation techniques cannot be easily be compared
because of the difficulty in reproducing the same motion
with volunteer scans. We report on a custom built MR
compatible platform capable of simulating and replaying
true organ motion. Operation of the platform within the
bore of the scanner did not affect the scanner. Real
organ motion was obtained from a scan of a
volunteer.T2-mapping showed aliasing with sinusoidal
motion and smearing-like artifacts with replayed kidney
motion. This platform could enable investigations into
motion artifacts for developing correction techniques.
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