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Abstract #4064

Pattern Analysis of Placental Blood Flow Distribution using ASL MRI

Eileen Hwuang1, Nadav Schwartz2, Walter Witschey3, John Detre3,4, and Dylan Tisdall3

1Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, United States, 2Department of Obstetrics and Gynecology, University of Pennsylvania, Philadelphia, PA, United States, 3Department of Radiology, University of Pennsylvania, Philadelphia, PA, United States, 4Department of Neurology, University of Pennsylvania, Philadelphia, PA, United States

Arterial Spin Labeling MRI is a promising approach to assess blood flow to the placenta. Although previous studies have largely attempted to quantify global perfusion, we believe that the unique physiology of blood flow through the placental intervillous space rather than through capillaries warrants regional pattern analysis. We present an image analysis framework leveraging a spline-based transform of the image coordinates, watershed segmentation, and clustering analysis. We report Bayesian statistics to quantify features of blood flow distribution and the degree of uncertainty at the uteroplacental interface.

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