Figure 1.

Target segments for electrode implantation. Thinning of the apical anterior and inferior segments are in shown in (A), with the corresponding reduced myocardial blood flow in (B) and late iodine enhancement in (C). Myocardial perfusion (D: myocardial blood flow; E: perfused capillary blood volume; F: average enhancement) showed significant hypoperfusion in the basal to apical anteroseptal, anterior, and inferior segments. Mechanical activation is shown in (G) and (H), with the latest time to peak contraction in the mid inferior and inferolateral segments. Panel (I) shows that the latest electrical activating segment was between the basal to mid inferolateral segments. Combining this information together predicted the target segments of the basal to mid inferolateral segments. The left ventricular wall thickness was ≥0.5 cm.