Abstract #1021

Motion Estimation and Retrospective Correction in 2D Cartesian Turbo Spin Echo Prostate Scans

Bryan Clifford¹, Daniel Polak², Wei-Ching Lo¹, Daniel Nicolas Splitthoff², Bradley Bolster³, Vibhas Deshpande⁴, Mukesh G. Harisinghani⁵, Susie Huang⁵, Lawrence L. Wald^6,7, and Stephen Cauley⁶

¹Siemens Medical Solutions, USA, Boston, MA, United States, ²Siemens Healthcare GmbH, Erlangen, Germany, ³Siemens Medical Solutions, USA, Salt Lake City, UT, United States, ⁴Siemens Medical Solutions, USA, Austin, TX, United States, ⁵Department of Radiology, Massachusetts General Hospital, Boston, MA, United States, ⁶Department of Radiology, A. A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States, ⁷Harvard-MIT Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, United States

Synopsis

Keywords: Motion Correction, Prostate, MR Value, Motion Correction, Body, Clinical Applications, ProstateNon-rigid patient motion is commonly encountered in clinical settings and can degrade the diagnostic quality of MR exams. We apply the SAMER retrospective method for 2D TSE/FSE prostate imaging to quantify and correct for bulk motion in the abdomen. SAMER utilizes a rapid low-resolution scout scan and a small number of calibration samples for separable motion estimation. In controlled phantom and in vivo experiments, SAMER enabled accurate motion parameter estimation across multiple motion patterns. In addition, we demonstrate improved image homogeneity and spatial resolution when SAMER is used for correction of non-rigid motion in the prostate.

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