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Abstract #2878

3D-Cine Whole-heart Magnetic Resonance Imaging Using a Novel Prospective Respiratory Self-Gating Technique

Mehdi Hedjazi Moghari1, Ashita Barthur1, Matteo Gazzola1, and Andrew J. Powell1

1Cardiology and Pediatrics, Boston Children's Hospital and Harvard Medical School, Boston, MA, United States

We developed a novel prospective respiratory motion compensation algorithm, Heart-NAV, for free-breathing retrospective electrocardiogram (ECG)-gated 3D-cine steady-state free precession whole-heart magnetic resonance imaging. In 10 patients, there was good agreement between the 3D-cine and conventional breath-hold 2D-cine imaging measurements of ventricular volumes. The mean scan time for the 3D-cine acquisition was 5.9±2.7 minutes. Advantages of the Heart-NAV approach include real-time motion correction allowing for immediate in-line image reconstruction, compatibility with a variety of k-space filling approaches, and utilization of standard scanner hardware/software. Such a 3D-cine approach eliminates the need for breath-holding and simplifies planning for ventricular function assessment.

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