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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