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Abstract #1969

How gating affects 2D phase contrast flow in the ascending aorta at 7.0T MRI

Maria R. Stefanescu1, Jan-Peter Grunz1,2, David Lohr1, Stefan Herz1,2, Aleksander Kosmala1,2, and Laura Maria Schreiber1

1Comprehensive Heart Failure Center, University Hospital Wuerzburg, Wuerzburg, Germany, 2Department of Radiology, University Hospital Wuerzburg, Wuerzburg, Germany

2D phase contrast MRI offers a fast method for blood flow evaluation in the ascending aorta which can be used for estimation of left ventricular function. With proper ECG or acoustic triggering, forward flow in the aortic root (FFAo) should resemble left ventricular stroke volume (LVSV) in absence of valve disease. However, for ultra-high field strengths (≥7.0T) flow parameters in the ascending aorta derived from phase contrast have not yet been validated. Our results suggest that accurate gating reduces cardiac motion artifacts for 7.0T to an extent where LVSV can be estimated reliably based on FFAo in phase contrast sequences.

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