Three-dimensional relationship between the conus branch and the precordial leads confirmed by 64–multidetector-row computed tomography

Abstract A 65-year–old man with effort angina pectoris underwent percutaneous coronary intervention of the proximal right coronary artery. The lesion was dilated with a bare-metal stent under wire protection of the conus branch (CB). However, the jailed CB was occluded. Electrocardiogram with conventional precordial leads (V 1 through V 6 ) accompanied with the supplementary leads (V 1 ⁎ through V 6 ⁎) positioned 1 intercostal space higher showed marked ST elevation in V 1 through V 3 that was more prominent in V 1 ⁎ through V 3 ⁎. The 64–multidetector-row computed tomographic coronary angiography showed recanalization of the CB located just in the center of the V 1 ⁎, V 2 ⁎, V 1 , and V 2 electrodes.