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Abstract #1305

Technical Feasibility of Three-Station Time-Resolved Bolus Chase MRA

Casey P. Johnson1, Eric A. Borisch1, James F. Glockner1, Thomas W. Polley2, Phillip M. Young1, Stephen J. Riederer1

1MR Research Laboratory, Mayo Clinic, Rochester, MN, United States; 2Electrical Engineering, Brigham Young University, Provo, UT, United States

Time-resolved bolus chase MRA of the thighs, calves, and feet is demonstrated using a single injection of contrast material. Diagnostic quality 3D time frames were reconstructed in real-time for visually-guided triggering of table motion to the calf and foot stations. A CAPR acquisition was used in combination with 2D SENSE acceleration to image with both high spatial (1.0-1.2 mm) and high temporal (2.4-7.6 sec) resolution at each station. This method allows imaging of high quality arteriograms of the peripheral vasculature devoid of venous signal without use of a timing bolus or other estimates of bolus transit time.