Background:

In this large scale retrospetive study with Electron Beam Tomography (EBT) in a multiracial population in the city of Istanbul; we aimed to determine the coronary artery anomalies and major anatomy by using the EBT coronary angiography scans.

Material and Method:

In this study, 454 subjects (M=431, F=23, mean age:57 years) coming from 10 different races were included. Non-ionic intravenous contrast agent had been used in all of the examinations. Origins and courses of the coronary arteries were evaluated with the main branches and cases with variations and anomalies were also determined.

Results:

In this study; 89% of the cases had right dominance, 10% of them had left dominance, and 1% of them had codominance. In total, 6% of the cases have ramus intermedius that originated from left main coronary artery as a separate branch. In 2.6% of the patients included in the study had coronary artery origin anomalies. In this group as an interesting fact that myo-cardial bridging rate reached up to 33.3% and especially it was related to the proximal segment. In fact, in the patients with no coronary artery anomalies (n=442), myocardial bridging was dedected only in 8.2% of patients. On the other hand, we detected a fistula between the coronary arteries and the pulmonary system in 3 of the subjects (%0.66). Also in 20 subjects (%4.4) in the study group, it was seen that there were accompanying extracoronary pathologies.

Conclusion:

In conclusion, it was discovered that the variations and anomalies with the anatomical features detected due to the population diversity in the cosmopolitan city of Istanbul; are showing differences from the literature information. For this reason, radiology experts working in big metropolitan cities like Istanbul, should know that they may face with variations and anomalies rather than usual in the coronary artery scans.

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