Figure 3

(a) Arrangement of the LV myocardial wall into circumferential segments (left), or transmural layers (right). (b) To localize the basal, mid and apical planes, the length (L) between the apex and the mitral valve in end systole is divided into four equal parts. The planes that are used for short-axis tagging are then located at a distance of 1/4, 1/2 and 3/4 of L from the mitral valve plane.