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Abstract #3552

Free Breathing Navigator Gated Cine Cardiac MR at 3T: Feasibility Study in Patients.

Chika Obele1, Christopher Sibley2, Jatin Matta1, Roderic I. Pettigrew1, Ahmed M. Gharib1

1Integrative Cardiovascular Imaging Section, The National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, United States; 2Radiology and Imaging Sciences Department, National Institutes of Health.

We demonstrate the feasibility of obtaining free-breathing cine images utilizing a single respiratory navigator gating technique. This method was made possible by utilizing the high signal-to-noise ratio (SNR) available at 3T to apply parallel imaging methods allowing the acquisition of up to 30 cardiac phases within clinically acceptable imaging time. Compared to traditional breath-holding techniques this methods showed no statistical difference in qualitative and quantitative imaging parameters, thereby, could be used as an alternative for children and patients who are unable to hold their breath.