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Abstract #3321

A Novel Approach to ECG-Gated High-Resolution Contrast-Enhanced MR Angiography in Thorax: Technical Aspects

Yutaka Natsuaki1, Philipp Moritz Wagner2, J. Paul Finn2, Randall Kroeker3, Gerhard Laub1

1Siemens Medical Solutions, Los Angeles, CA, United States; 2Radiology, UCLA, Los Angeles, CA, United States; 3Siemens Medical Solutions, Winnipeg, MB, Canada

Contrast-enhanced MR angiography (ceMRA) is typically performed without ECG gating, and in cardiothoracic applications, variable degrees of blurring may result due to cardiac motion. Alternatively, ceMRA can be acquired with ECG gating, whereby the segmented data acquisition is synchronized with the cardiac cycle and thus minimizes motion-induced blurring. However, conventional gated ceMRA is limited by its acquisition inefficiency, and its spatial resolution and coverage are insufficient for clinical purposes. The current work proposes a novel approach to increasing efficiency and flexibility in ECG-gated ceMRA, and achieves full-coverage high-resolution ECG-gated ceMRA within a single breath hold.