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Abstract #3199

T2 and T1p Quantification of Cortical Bone in Vivo Using Ultrashort TE (UTE) Pulse Sequences

Jiang Du1, Atsushi Takahashi2, Michael Carl2, Mark Bydder1, Nikolaus Szeverenyi1, Christine Chung1, Graeme Bydder1

1Radiology, University of California, San Diego, CA, United States; 2Global Applied Science Laboratory, GE Healthcare Technologies, Menlo Park, CA, United States

Conventional magnetic resonance sequences produce a signal void for cortical bone. By combining half pulse excitation, radial ramp sampling, and fast transmit receiver switching, an ultrashort TE of 8 μs can be achieved for bone imaging and quantification of T1 and T2*. Measurement of T2 and T1p relaxation times in cortical bone may help evaluate bone quality. Here we present techniques to quantify T2 and T1p relaxation times of the cortical bone in vivo on a clinical 3T MR system