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Abstract #2904

Cardiac Self-Gating for Free-Breathing Phase-Contrast MRI

Marcus Hott1,2,3, Henrik von Kleist4, Jihye Jang2,5, Andrew Powell1,2, and Mehdi Hedjazi-Moghari1,2
1Department of Pediatrics, Harvard Medical School, Boston, MA, United States, 2Department of Cardiology, Boston Children's Hospital, Boston, MA, United States, 3Department of Informatics, Technical University of Munich, Munich, Germany, 4Munich School for Data Science, Munich, Germany, 5Philips Healthcare, Gainesville, FL, United States

We implemented an end-to-end cardiac self-gating algorithm for a novel free-breathing 2D cine phase-contrast sequence on a clinical MRI scanner. We validated our technique against clinically performed ECG-gated cine phase-contrast scan. Strong agreement with no statistically significant difference was shown between the systemic and pulmonary blood flow measurements calculated between the standard ECG-gating and self-gating scans. Our approach eliminates the need for an ECG signal and allows for blood flow measurements where an ECG is not accessible such as fetal cardiac MRI.

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