Time-resolved lower extremity MRA with temporal interpolation and stochastic spiral trajectories: preliminary clinical experience.
Ruth P Lim, Jason S Jacob, Elizabeth M Hecht, Danny C Kim, Steven D Huffman, Sooah Kim, James S Babb, Gerhard Laub, Mark A Adelman, Vivian S Lee
J Magn Reson Imaging | Published : 2010
PURPOSE: To assess added value of a new time-resolved technique with temporal interpolation and stochastic spiral trajectory through k-space and parallel imaging (TR-MRA) to conventional bolus chase MRA (BC-MRA) for infragenual peripheral artery evaluation. MATERIALS AND METHODS: An institutional review board-approved retrospective review of peripheral arterial disease patients was performed. Infragenual TR-MRA and BC-MRA were performed in 26 patients over four months. Two readers individually assessed image quality, diagnostic confidence, and stenosis severity and length in 13 defined below knee segments, first with BC-MRA alone, and then with a combined BC-MRA and TR-MRA reading (BC+TR-MRA..View full abstract