الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Accurate knowledge of coronary anatomy is an essential tool to help the angiographer and interventional cardiologist to cope with the great evolution of the interventional cardiological procedures.
The material of this study composed of 30 adult cadaveric human hearts taken from the Human Anatomy and Embryology Department, Faculty of Medicine, University of Alexandria. Fifteen hearts were injected with red latex to study the length, proximal diameter and branching pattern of the coronary arteries. Also the coronary sinus(CS) had been studied taking into consideration its length, diameter and its relation to the atrioventricular groove. The tributaries of the CS were also studied.
The material of the study included also MSCT images of 50 patients that had chest pain - proved to be free of cardiac problems- taken from the International Centre of Cardiology (ICC) of Alexandria.
The results of the present study revealed that the RCA arose from the right aortic sinus in 100% of cadaveric specimens and 92% of MSCT cases and from the left aortic sinus in the remaining 8% of MSCT cases.
The RCA had anterior and posterior segments. The posterior segment ended before the crux cordis in 20% of cases and beyond the crux cordis in 70% of cases and was absent in 10% of cases.
The right conal artery in anatomical specimens arose from the RCA in 80% or directly from the ascending aorta(AO) in (10%)or by a common stem from the AO with the RCA in (10%).
In the MSCT cases the right conal artery arose from the RCA in 88% or directly from the ascending aorta (AO) in (6%) or by a common stem from the AO with the RCA in (6%).
The sinoatrionodal artery(SANA) arose from the RCA in (100%) of studied cases. The right marginal artery (RMA) was observed in (100%) of all the studied cases. It arose from the proximal part of RCA in (20%) of cases and at the inferior border of the heart in (80%)of cases.