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Figure 7 Quantitative Vortex Flow Parameters in Normal Subjects and LV Systolic Dysfunction Group
The Echo freeze frames (upper panel), and parametric representation of steady streaming field and the pulsatile strength field (lower panel) in normal (A) and left ventricular (LV) systolic dysfunction groups (B). The vortex in normal subjects showed an elliptical shape (A, Aa, white arrow, sphericity index [SI]: 2.8) and strong pulsatility (Ap, red-colored area, vortex relative strength [VRS]: 1.182), whereas spherical (B, Ba, white arrow, SI: 1.3) and weak pulsatility (Bp, blue-colored area, VRS: 0.335) vortex was observed in patients with systolic heart failure.
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