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Abstract #1343

Reducing the Scan Time of Time-Resolved, 3D Phase Contrast Imaging with 2D Autocalibrated Parallel Imaging

Marcus T. Alley1, Philip J. Beatty2, Albert Hsiao1, Shreyas S. Vasanawala1

1Radiology, Stanford University, Stanford, CA, United States; 2MR Applied Science Lab, GE Healthcare, Menlo Park, CA, United States

Time-resolved 3-dimensional phase-contrast MR imaging (3D-PC MRI) has developed as an active area of research for vascular imaging. In general however the clinical adoption of this approach for routine vascular imaging has been hampered by the long acquisition times inherent in the technique (on the order of 10-20 minutes). Several groups have addressed this issue by using parallel imaging to accelerate data acquisition in one dimension, and in this work we demonstrate the ability to perform auto-calibrated parallel imaging in both the in-plane and slice directions to reduce the overall scan time to the order of several minutes.