Abstract #4698

Evaluation of Uterine and Placenta Motion throughout Early Gestation

Thomas Martin^1,2, Xinzhou Li¹, Irish Del Rosario³, Teresa Chanlaw⁴, Tess Armstrong¹, Sherin Devaskar⁴, Carla Janzen⁵, Rinat Masamed¹, Holden Wu¹, and Kyunghyun Sung¹

¹Radiological Sciences, University of California, Los Angeles, Los Angeles, CA, United States, ²Biomedical Physics, University of California, Los Angeles, Los Angeles, CA, United States, ³Department of Epidemiology, University of California, Los Angeles, Los Angeles, CA, United States, ⁴Department of Pediatrics, University of California, Los Angeles, Los Angeles, CA, United States, ⁵Department of Obstetrics and Gynecology, University of California, Los Angeles, Los Angeles, CA, United States

When imaging the uterus and placenta, in pregnant patients, there are potential uterine contractions that compress the superior region of the uterus and can cause significant motion in the uterus and placenta. It is not well studied how much uterine contraction and other motion need to be accounted for during MRI scans in early gestation. In this study we observed and characterized uterine contractions and other bulk motion in pregnant women (gestational age 14-22weeks) using an image based template-matching program. This study can further help develop proper scanning protocols for MRI studies with pregnant patients to avoid potential motion artifacts.

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