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Abstract #4218

Fast T1 Measurement of Cortical Bone using 3D Ultrashort Echo Time Actual Flip Angle Imaging and Single Repetition Time Acquisition (UTE-AFI-STR)

Zhao Wei1,2,3, Hyungseok Jang1, Zubiad Ibrahim1, Mohammadamin Cheraghi1, Graeme M. Bydder1, Wenhui Yang2,3, and Ya-Jun Ma1
1Department of Radiology, UC San Diego, San Diego, CA, United States, 2Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China, 3University of Chinese Academy of Sciences, Beijing, China

To improve the time efficiency for cortical bone T1 measurement on clinical scanners, we proposed a new method which fits the datasets of 3D ultrashort echo time actual flip angle imaging (UTE-AFI) and UTE with a single TR (UTE-STR) simultaneously (UTE-AFI-STR). The results show that the UTE-AFI-STR can measure the T1 of cortical bone accurately and more efficiently than the UTE-AFI-VTR method.

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