Abstract #0492
Validation of Variable Flip Angle Imaging-Based Simultaneous B1+ and T1 Mapping in the Prostate at 3T
Novena A Rangwala 1 , Isabel M Dregely 1 , Holden H Wu 1 , and Kyunghyun Sung 1
1
Department of Radiological Sciences,
University of California Los Angeles, Los Angeles, CA,
United States
Characterizing B1+ distributions accurately is essential
in multiparametric quantitative MRI; however, B1+
measurement sequences are additional to quantitative
protocols and increase scan duration. This study aimed
to characterize the B1+ distribution in the pelvis using
a recently proposed reference region variable flip angle
(RR-VFA) imaging based technique and compare it with a
conventionally available B1+ mapping sequence in the
prostate of healthy volunteers. The proposed technique
showed B1+ distributions consistent with the
conventional B1+ measurement technique, eliminating the
need for an additional scan for B1+ correction.
Additionally T1 measurements after B1+ correction with
the RR-VFA method had significantly lower standard
deviations, indicating improved robustness after B1+
correction.
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