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

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.