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Abstract #1023

Evaluation of Self-Navigated Golden-Angle Ordered Conical Ultrashort Echo Time (UTE) MRI of the Abdomen on Pediatric Patients in Multiple Sedation States

Anshul Haldipur1, Evan James Zucker1, Joseph Y. Cheng1, Michael Carl2, and Shreyas S. Vasanawala1

1Radiology, Stanford University, Stanford, CA, United States, 2Applied Science Laboratory, GE Healthcare, San Diego, CA, United States

To assess the feasibility of conical k-space trajectory free-breathing UTE abdominal MRI and the effects on image quality of 50% data subsampling (thereby potentially shortening scans) and soft-gated motion correction reconstruction techniques, 42 consecutive pediatric patients were recruited and scanned. The images were scored in blinded fashion by two readers. Adequate delineation was obtained for all evaluated abdominal structures except the hepatic artery. 50% subsampling decreased image quality only slightly, favoring the implementation of a shorter scan time with negligible diagnostic compromise. Overall, motion correction mildly degraded image quality, possibly due to greater noise from data subsampling.

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