Fig. 9
From: Contrast echocardiography: a practical guideline from the British Society of Echocardiography
a With focussed view of the septum, which is affected during LBBB, wall thickening at end diastole is shown. b Wall thickening at end systole is shown. There is no discernible increase in wall thickening suggestive of possible ischaemia in the septum