Abstract #2758

Consistent T1 Quantification in a Multiscanner Setting using Reference Region Variable Flip Angle B1+ Mapping

Novena Rangwala¹, Isabel Dregely¹, Holden Wu¹, and Kyunghyun Sung¹

¹Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, United States

The purpose of this study was to demonstrate improved T₁ estimation in the prostate using the Reference Region Variable Flip Angle (RR-VFA) B₁+ mapping and correction across multiple MRI scanners with different RF transmission modes. Prostate T₁ measurements were compared in four volunteers on three MRI scanners before and after B₁+ correction. The results showed that, for each volunteer, T₁ variations across scanners decreased by 62% after RR-VFA correction, to an average of 10% among scanners, highlighting the need for B₁+ correction and the ability to effectively yield precise T₁ estimations in a multi-scanner setting using RR-VFA.

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