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Abstract #3644

Comparison of Fetal Blood Flow Measured at 1.5T and 3.0T Using Phase Contrast MR and Metric Optimized Gating: Preliminary Results

Christopher K Macgowan 1 , Beverly Tsai Goodman 2 , Mashael Alrujaib 3 , and Mike Seed 4

1 Departments of Medical Biophysics and Medical Imaging, Hospital for Sick Children / University of Toronto, Toronto, Ontario, Canada, 2 Department of Paediatric Cardiology, Bristol Children's Hospital / University of Bristol, United Kingdom, 3 Department of Paediatrics and Division of Cardiology, Hospital for Sick Children / University of Toronto, Ontario, Canada, 4 Department of Paediatrics and Division of Cardiology, Hospital for Sick Children / University of Toronto, Toronto, Ontario, Canada

Quantification of human fetal blood flow using phase contrast (PC) MR with metric optimized gating (MOG) has recently been demonstrated in normal pregnancies and fetal left-sided congenital heart disease. These studies were performed at a field strength of 1.5T; however, there is growing interest in fetal imaging at higher field strengths to improve SNR. The goal of this pilot study was to evaluate the agreement between fetal flows measured at 1.5T and 3.0T, using PC MR with MOG.

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