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Abstract #4021

Optimization for non-contrast enhanced MRA of renal artery at 3T: evaluation of BBTI with consideration of renal blood velocity

Yasuhisa Kurata 1 , Aki Kido 1 , Koji Fujimoto 1 , Kayo Kiguchi 1 , Kyoko Takakura 1 , and Kaori Togashi 1

1 Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Kyoto, Japan

We aimed to evaluate the optimal BBTI for obtaining non-contrast-enhanced MRA of renal artery using time-SLIP technique at 3.0-T considering with the changes of renal blood velocities according to the ages. Quantitatively, relative signal intensity of renal artery was best at BBTI of 1400msec, and optimal BBTI for younger subjects (under 50y.o.) was 1600msec and 1800msec, and that for older subjects was 1800msec qualitatively. Then, suggestive BBTI may be 1600-1800msec regardless of the renal blood velocity at 3T.

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