Figure 1

Left main coronary angiography and D1-LAD catheterization. Coronary angiography of the left main coronary artery in ventrodorsal (a) and lateral (b) projections. The left coronary anatomy, including left circumflex coronary (LCx) and left anterior descending (LAD) arteries is clearly visualized. The D1-LAD artery was identified and is shown outlined here by the arrows in the ventrodorsal and lateral views. Following identification of the D1-LAD artery, the artery was then catheterized with a 0.014″ micro-guide wire with correct wire positioning designated by arrows on lateral projection (c). Repeat angiography was performed following wire advancement (d) with the wire still present designated by the arrows.