Fig. 1

The Amplatz left 2 catheter could be engaged in both the right (a) and left (b, c) coronary artery. a The right coronary artery originated from the left sinus of Valsalva (arrowhead). The mid right coronary artery was subtotally occluded (arrow). b The left anterior descending artery was intact. A clear collateral artery from the second diagonal branch to the distal right atrioventricular branch was observed (arrow). c A caudal image of the left coronary artery shows severe stenosis of the high lateral branch and left circumflex artery. d The left internal thoracic artery graft (arrowheads) to left circumflex artery was patent. e, f The gastroepiploic artery graft (arrowheads) to right postero-descending artery (arrows) was patent. f is a magnified image of (e)