Figure 1

Measurement of peak systolic radial strain in three layers in the left ventricular inferior wall of: 1a) one normotensive patient with non-severe aortic stenosis; 1b) one normotensive patient with severe aortic stenosis; 1c) one hypertensive patient with severe aortic stenosis. Each panel: Top left – Colour TDI image in parasternal short-axis view of the inferior left ventricular wall. Bottom left – B-mode image with 3 regions of interest placed in three layers (subendocardium, mid-myocardium, subepicardium) in the left ventricular inferior wall. Right panel: corresponding peak systolic radial strain curves for the three regions of interest: red curve for subendocardium, blue curve for mid-myocardium, and yellow curve for subepicardium.