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Abstract #1526

Utility of Cardiac Gating for Pulmonary Perfusion MRI

Kang Wang1, Mark Schiebler2, Christopher Francois2, Alejandro Munoz Del Rio1,2, Frank Korosec1, Sean Fain1, Scott Nagle2

1Medical Physics, University of Wisconsin-Madison, Madison, WI, United States; 2Radiology, University of Wisconsin-Madison, Madison, WI, United States

Cardiac motion is a common source of artifact on MR images of the thorax. Traditionally, ECG-gating has been employed to minimize these artifacts, at the expense of decreased scan efficiency and increased complexity in patient set-up. This trade-off is application-specific, with some imaging techniques more sensitive to cardiac motion artifacts than others. The purpose of this study was to determine whether or not ECG-gating improves image quality for pulmonary perfusion MRI using a recently developed pulmonary perfusion method that results in high isotropic spatial resolution, high temporal resolution, and whole chest coverage.