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Abstract #1339

Nontriggered Cartesian Steady-State Free Precession Phase-Contrast MR

Joshua FP van Amerom1, Michael S. Jansz1, Christopher K. Macgowan1

1Departments of Medical Biophysics and Medical Imaging, University of Toronto and Hospital for Sick Children, Toronto, Ontario, Canada

Steady state free precession phase-contrast (PC-SSFP) is proposed for measurement of nontriggered time-averaged velocity as it exhibits less signal variation over the cardiac cycle than conventional PC-MR. It is shown that Cartesian nontriggered PC-SSFP provides an accurate mean-velocity measurement while conventional nontriggered PC-MR overestimates the mean velocity due to in-flow effects.