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Abstract #3183

Three Minute Whole-heart Magnetic Resonance Angiography with Prospective Heart Tracking and Compressed Sensing Parallel Image Reconstruction

Mehdi Hedjazi Moghari1,2, Martin Uecker3,4, Sébastien Roujol5, Tal Geva1,2, and Andrew J Powell1,2

1Pediatrics, Harvard Medical School, Boston, MA, United States, 2Cardiology, Boston Children's Hospital, Boston, MA, United States, 3German Center for Cardiovascular Research (DZHK), Goettingen, Germany, 4Department of Diagnostic and Interventional Radiology, University Medical Center, Goettingen, Germany, 5Division of Imaging Sciences and Biomedical Engineering, King’s Health Partners, St. Thomas’ Hospital, King’s College London, London, United Kingdom

To accelerate whole-heart magnetic resonance angiography, we implemented a variable density Poisson disc undersampling pattern and compressed sensing parallel image reconstruction, and compared it to a standard parallel image (SENSE) acquisition in 15 patients. The compressed sensing technique was faster (mean 3.4±1.0 minutes vs 7.6±1.7 minutes) and had similar objectively measured sharpness in 4 designated regions (all p>0.05) but a lower subjective image quality scores (all p≤0.05).

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