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Abstract #3760

Two-Station Time-Resolved 3D Contrast-Enhanced MRA with Real-Time Station Switching

Casey Peter Johnson1, Clifton R. Haider1, Eric A. Borisch1, Roger C. Grimm1, Phillip J. Rossman1, Thomas C. Hulshizer1, Jake C. Snell1, James F. Glockner1, Stephen J. Riederer1

1Department of Radiology, Mayo Clinic, Rochester, MN, United States

The purpose of this work was to improve bolus-chase MRA techniques by imaging multiple stations with both high spatial and temporal resolution. A highly-accelerated (14x) CAPR acquisition, previously demonstrated for single-station MRA of the calves, was adapted for this purpose. As part of the implementation, a system was developed to reconstruct the CAPR images in real time and allow for visually-guided station switching. Vasculature of the thighs and calves of volunteers was imaged with 1.0 mm isotropic resolution and frame times as low as 2.5 seconds. High-quality arterial frames were consistently acquired in both stations while avoiding venous contamination.