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Abstract #0524

Three-Station Time-Resolved 3D Bolus Chase MRA with a Single Injection of Contrast Material

Casey P. Johnson1, Eric A. Borisch1, Phillip J. Rossman1, Thomas C. Hulshizer1, Roger C. Grimm1, Paul T. Weavers1, James F. Glockner1, Phillip M. Young1, Stephen J. Riederer1

1MR Research Laboratory, Mayo Clinic, Rochester, MN, United States

A new method for 3D bolus chase MRA is demonstrated for imaging from the iliac arteries to the pedal arches with both high spatial and temporal resolution. The CAPR time-resolved imaging technique is used with 8x 2D SENSE and 1.8-1.9x 2D partial Fourier acceleration throughout the extended FOV to allow 1.5, 1.5, and 1.0 mm isotropic resolution and 2.5, 2.5, and 5.2 sec frame times at the abdomen-pelvis, thigh, and calf-foot stations, respectively. Frames at the proximal stations are reconstructed in real-time, enabling fluoroscopic tracking of the contrast bolus, triggering of table advance, and only one contrast injection per exam.