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Abstract #1385

Motion Correction of Abdominal Diffusion-Weighted MRI Using Internal Motion Vectors

Michael Bush1, Thomas Vahle2, Uday Krishnamurthy1, Thomas Benkert2, Xiaodong Zhong1, Bradley Bolster1, Paul Kennedy3, Octavia Bane3, Bachir Taouli3, and Vibhas Deshpande1
1Siemens Medical Solutions USA, Inc., Malvern, PA, United States, 2Siemens Healthcare GmbH, Erlangen, Germany, 3The Department of Radiology and Biomedical Engineering and Imaging Institute, Icahn School of Medicine at Mt. Sinai, New York, NY, United States

Respiratory motion is a significant problem in MRI and is further amplified in abdominal imaging. Traditional methods to correct for motion in abdominal DWI significantly increase overall scan time. In this work, motion vectors derived from non-rigid registration of low b-value diffusion volumes are used to correct for motion in higher b-values, where low signal to noise and contrast make intra and inter b-value registration challenging. Initial results suggest the proposed method can produce images similar in quality to respiratory gating, while maintaining reduced acquisition times.

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