Fig. 5

Correlation between the difference in LVOT PPG and the difference in vortex/helix phase count. The correlations are exhibited (a) between LVOT PPG before ASA—LVOT PPG a week after ASA and vortex/helix phase count before ASA—vortex/helix phase count a week after ASA and (b) between LVOT PPG before ASA—LVOT PPG 6 months after ASA and vortex/helix phase count before ASA—vortex/helix phase count a week after ASA. The solid and broken lines indicate the linear regression line and its confidence limits, respectively. Abbreviations: ASA, alcohol septal ablation; LVOT, left ventricular outflow tract; PPG, peak pressure gradient