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Abstract #1255

Respiratory Navigator with Adaptive Acceptance Gating Window Size & Fixed Scan Time for Coronary MRI

Mehdi Hedjazi Moghari1, Alan O'connor1, Warren J. Manning1, Reza Nezafat1

1Dept. of Medicine (Cardiovascular Div.), Beth Israel Deaconess Medical Center, Harvard Medical Sch., Boston, MA, United States

Compensating for the heart respiratory motion using prospective navigators prolongs scan time with a non-deterministic total acquisition time. In this study, we propose a new adaptive navigator gating where fixed navigator efficiency is used for enforcing temporal changes in the gating window during the scan.