,The right coronary was a large, dominant vessel giving rise to a large posterior descending artery and small-to-moderate first posterolateral, small second posterolateral, and a small-to-moderate third posterolateral branch. 
,The right coronary was a large , dominant vessel giving rise to a large posterior descending artery and small - to - moderate first posterolateral , small second posterolateral , and a small - to - moderate third posterolateral branch .