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Abstract #1544

Intravoxel Incoherent Motion Diffusion-weighted MR Imaging of the Placenta: Evaluation of Perfusion Changes in the Supine and Left Lateral Decubitus Positions

Skorn Ponrartana 1 , Sherin U Devaskar 2 , Jonathan M Chia 3 , Vidya Rajagopalan 4 , Hollie A Lai 1 , David Miller 5 , and Vicente Gilsanz 1

1 Radiology, Children's Hospital Los Angeles, Los Angeles, CA, United States, 2 Pediatrics, University of California, Los Angeles, Los Angeles, CA, United States, 3 Philips Healthcare, Cleveland, Ohio, United States, 4 Radiology, Children's Hospital Los Angeles, CA, United States, 5 Obstetrics and Gynecology, University of Southern California, CA, United States

This work evaluates the feasibility of intravoxel incoherent motion diffusion weighted imaging for evaluating changes in perfusion of placenta during known physiologic changes in arterial flow to the uterus in the supine and left lateral decubitus positions. Perfusion fraction maps of placenta in the two positions were compared. Mean perfusion fraction of the placenta was significantly higher in the left lateral decubitus position compared with the supine position. Intravoxel incoherent motion diffusion weighted imaging may be useful to study placental perfusion in clinical settings where there is concern of appropriate fetal growth.

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