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Background Cardiovascular magnetic resonance (CMR) is considered the clinical gold standard for accurate and reproducible assessment of left ventricular (LV) ejection fraction (EF). However, manual contouring of an entire LV short-axis stack can be time consuming. A number of geometric approximation models for assessment of ventricular volumes have previously been validated using angiography, echocardiography and single photon emission computed tomography. We aimed to assess the accuracy and reproducibility of these geometric models for LV EF assessment in unselected patients referred for clinically indicated CMR.

Accuracy and reproducibility of geometric models for assessment of left ventricular ejection faction using cardiovascular magnetic resonance