Integration of standard myocardial and epicardial segmentation: Validation by computed tomography and autopsy studies

Background: The epicardial coronary segmentations have not established the relation between the epicardial branches and the supplied myocardial segments Methods: The coronary angiograms of 37 patients were analyzed by a computer program called Holistic Coronary Care. Results: The analysis of the coronary angiograms showed that out of the 17 left ventricular segments 9.5±1.9, 3.3±2.4 and 4.2±2.5 were supplied by the left anterior descending, the left circumflex and the right coronary artery, respectively. A highly significant correlation was found between the angiographic and both the CT and the autopsy determination of the number of left ventricular segments (r=0.97 and 0.94, p<0.001). Conclusions: Coronary angiography from multiple projections can determine accurately the supplied left ventricular segments of the 3 main coronary branches.