Fig. 2

Measurement of septal convexity (SC) in end-diastolic 4-chamber cardiac magnetic resonance images (a) from a subject with hypertrophic cardiomyopathy and (b) from a subject with hypertensive heart disease. The black line is the tricuspid valve annulus. The red line is a reference line between the septal mid-wall at the level of the tricuspid valve and the insertion point of the right ventricle into the left ventricle at the apex. The white line represents the measured SC.