Abstract #2575

Variable TR and Variable Refocusing Flip Angle Fresh Blood Imaging for Non-Contrast MRA at 3T: A 7-Minute Iliac to Calf Station Run-Offs Scan

Xiangzhi Zhou¹ and Mitsue Miyazaki¹

¹Toshiba Medical Research Institute USA, Vernon Hills, IL, United States

Fresh Blood Imaging (FBI) scan time can be greatly reduced using variable TR (vTR) technique for imaging the peripheral artery without contrast. To reduce the SAR in FSE acquisition so that the shortest TR can be enabled for the slice encodings at the kz edge, variable refocusing flip angle (vFA) is proposed in addition to vFA for FBI in this study. The optimized FBI sequence with vTR and vFA was applied on volunteers to achieve a 7-minutes 3 station run-off scan to cover from iliac to calf.

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