Does Temporal Regularization Lead to Systematic Underestimation of Ejection Fraction?
Stefan Wundrak 1,2 , Jan Paul 1 , Johannes Ulrici 2 , Erich Hell 2 , and Volker Rasche 1
Ulm University Hospital, Ulm, Germany,
Dental Systems, Bensheim, Germany
In clinical practice breath-hold ECG-synchronized cine
protocols remain the preferred method for the assessment
of the ejection fraction of the ventricles. Recent
research aims for real-time free-breathing CMR by
combining fast imaging se-quences with parallel imaging
and compressed sensing. However, recent work reports a
10% underestimation of the ejec-tion fraction by
real-time CMR. We reproduce these results with
golden-angle radial sparse SENSE and show that the
underestimation might be explained by the strong
temporal regularization that is needed to reconstruct
the highly under-sampled CMR images.
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