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.