Fig. 14From: Complex and multilevel left ventricular outflow tract obstruction: What can 3D echocardiography add?Upper panels, multiplanar reformatting (MPR)-derived aortic valve area (mid-systolic and at the tips) is 1.1 cm2. Multiplanar reformatting (MPR)-derived area of the LVOT at the level of the subaortic membrane is 1.0 cm2Back to article page