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Abstract #5110

Three-Dimensional Adiabatic Inversion Recovery Prepared Ultrashort Echo Time Cones (3D IR-UTE-Cones) Imaging of Cortical Bone in the Hip

Amin Nazaran1, Michael Carl2, Yajun Ma1, Saeed Jerban1, Yanchun Zhu1, Eric Y. Chang1,3, and Jiang Du1

1The University California, San Diego, San Diego, CA, United States, 2GE Healthcare, San Diego, CA, United States, 3Radiology Service, VA San Diego Healthcare System

Ultra short echo time (UTE) techniques have been used to image cortical bone. However, imaging cortical bone in hip has been challenging due to limited signal-to-noise ratio (SNR), robust long T2 suppression, and long scan time. UTE sequences with TEs down to 32μs are able to acquire signal from both short and long T2* tissue. To suppress long T2* tissue, the combination of inversion recovery (IR) and UTE imaging can be used. In this report, we applied three-dimensional adiabatic inversion recovery prepared UTE with Cones trajectories (3D IR-UTE-Cones) to suppress long T2 tissue and to directly quantify cortical bone in the hip in vivo at 3T.

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