In Vivo Validation of Longitudinal-Circumferential Area Change Ratio to Estimate Myofiber Shortening in the Heart


The aim of this paper was to validate area change ratio (%AC) against myofiber shortening (%λ(f)) in the heart in vivo. %AC is emerging as a mechanical index that may approximate %λ(f) by incorporating both circumferential and longitudinal shortening. However, the physiological significance of % AC remains unclear. We studied the time course of %AC in the… (More)
DOI: 10.1109/TBME.2012.2188101