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Abstract #3264

Time-Resolved Contrast-Enhanced MR Angiography with Single-Echo Dixon Background Suppression

Eric G. Stinson1, Joshua D. Trzasko1, Norbert G. Campeau1, John Huston III1, Phillip M. Young1, and Stephen J. Riederer1

1Radiology, Mayo Clinic, Rochester, MN, United States

Contrast-enhanced MR angiography (CE-MRA) typically relies on a time-subtraction technique to suppress the background signal and emphasize the contrast-enhanced blood signal. However, Dixon-based background suppression has been reported to reduce motion sensitivity and improve signal-to-noise ratio in CE-MRA studies. Dual-echo Dixon techniques suffer a time penalty from acquiring an image at a second echo time, but single-echo Dixon techniques require an image at only one echo time and can reduce the time penalty. Here, time-resolved 3D single-echo Dixon CE-MRA at 3.0T with image update times of under 5 seconds is reported with results in the calves, hands, and brain.

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