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Figure 2 Description of How to Measure Quantitative Average Vortex Parameters That Represent Vortex Location and Shape
Vortex depth represents vertical position of center of vortex relative to left ventricular long axis (A, white line), and vortex transverse position represents transverse position relative to posteroseptal axis (B, white line). Vortex length was measured by longitudinal length of vortex relative to left ventricular length (C, white arrow), and vortex width was measured by horizontal length of vortex relative to left ventricular length (D, white arrow). A vortex sphericity index was calculated by vortex length and vortex width.
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