Distal Lower Extremities: Prospective Comparison of 2D Time-of-Flight, 3D Time-Resolved Contrast-Enhanced MR Angiography, and 3D Bolus Chase Contrast-Enhanced MR Angiography
نویسندگان
چکیده
W. Y. Hahn, E. M. Hecht, B. Friedman, V. S. Lee NYU Medical Center, New York, NY, United States SYNOPSIS: Magnetic resonance angiography of the calf and pedal arteries is challenging due to the issues of venous contamination and small vessel size. Therefore, contrast-enhanced MRA is typically supplemented with TOF imaging below the knee. In this study, we compared the conventional TOF sequence with 3D contrastenhanced time-resolved MRA and 3D bolus chase MRA for calf and pedal imaging. Both 3D methods are superior to TOF imaging in the evaluation of arterial length and stenosis grade. Furthermore, the time-resolved technique adds important dynamic information about blood flow direction.
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