Abstract #0569

3D Whole-Heart Water Fat Coronary MRA at 3T with 100% Scan Efficiency

Gastao Cruz¹, René Botnar¹, and Claudia Prieto¹

¹Division of Imaging Sciences and Biomedical Engineering, King's College London, London, United Kingdom

Fat suppression is required for visualization of coronary arteries with MRA. Studies have shown that cardiac fat may provide diagnostic information and thus water/fat coronary imaging is desirable. Respiratory motion is a major problem in whole-heart coronary imaging as respiratory gating leads to long and unpredictable scan times. Translational motion correction (TC) may be of limited value as it may introduce ghosting artefacts from static fat tissue. Here, we propose a 100% scan efficiency, two-step motion correction framework using translational and nonrigid correction for water/fat coronary MRA. The proposed approach outperforms TC, minimising ghosting artefacts from static tissues.

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