Abstract #3183

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

Mehdi Hedjazi Moghari^1,2, Martin Uecker^3,4, Sébastien Roujol⁵, Tal Geva^1,2, and Andrew J Powell^1,2

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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