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Abstract #2972

3D GRASE pseudo-continuous arterial spin labeling (pCASL) of preterm human brains

Minhui Ouyang 1 , Peiying Liu 1 , Hanzhang Lu 1 , Tina Jeon 1 , Lina Chalak 2 , Jonathan M Chia 3 , Andrea Wiethoff 1 , Nancy K Rollins 4 , and Hao Huang 1

1 Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, TX, United States, 2 Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, United States, 3 Philips Healthcare, Cleveland, Ohio, United States, 4 Radiology, Children's Medical Center, Dallas, TX, United States

Arterial spin labeling (ASL) is a noninvasive perfusion imaging method for quantifying regional CBF using labeled blood as an endogenous tracer. However, accurate measurement of regional CBF for the preterm human brains remains challenging due to extremely slow blood velocity and no standardized protocol for ASL of preterm brains. The purposes of our study are 1) to optimize 3D GRASE pseudo-continuous ASL (pCASL) protocol for highly reproducible and well validated ASL in preterm human brain; and 2) to explore the spatiotemporal CBF distribution and relationship of regional CBF to regional microstructural changes during the 3rd trimester.

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