A STUDY ON EVALUATION OF CORONARY ARTERY VARIATIONS USING 64-SLICE MDCT CORONARY ANGIOGRAPHY IN MAHARASHTRA.

Introduction-Coronary artery anomalies (CAA) are the genetic abnormalities which are generally asymptomatic. However, these anomalies can cause chest pain, syncope, arrhythmias, MI (myocardial infarction) or unexpected death. Multidetector row-computed tomography (MDCT) has been introduced as the best modality for coronary imaging. In the current study, we tried to evaluate the CAV including anomalies using 64-Slice MDCT coronary angiography in selected population. Material and Method-The current study was a cross-sectional and observational in nature, carried out at Biyani Diagnostic Centre, Dhule, Maharashtra from December 2022 to November 2023. A total of 106 patients were included in the study after applying inclusion and exclusion criteria. Philips Brilliance 64-slice MDCT was used for imaging modality. Data were restructured by retrospective gating in end-diastolic phase or end-systolic phase to clearly figure the 'right coronary artery (RCA)'. For evaluation of CAA, CAV and coronary artery stenosis (CAS), the 3D radiological image of complex anatomy of the coronary artery tree was axially projected. CAV was considered based on American Heart Association (AHA) scheme. All the collected data were statistically analyzed by descriptive statistics using Microsoft excel 2010. Result- The study included 106 patients with age range of 22-74 years and mean age of 52.9±9.5years. in the current study, Right dominance was seen in 90(84.90%), left dominance in 12(11.32%), and co-dominance was observed in 4(3.77%) patients. Smaller branches like conus artery, sinus node artery and septal branches were seen in most of the patients in our study. Type II (partially supplying apex) LAD variation was found to be the commonest among study subjects. As far as coronary anomalies are concerned, it showed prevalence of 15.09% in our study. The most common was the coronary arteries running within the myocardium i.e. myocardial bridging. The present study found 2(1.88%) cases of malignant anomalies. Conclusion- In the current study, CAV was present in most of the patients. Although, prevalence rate of CAA was found to be 15.09%, with the left coronary artery anomalies to be more common than right coronary artery anomalies. MDCT modality is tremendously helpful in indicating the presence CAV and CAA and it gives complete and exact information about the anatomy of coronary artery. This information can be vital for correct diagnosis and treatment plan of the patients as in case of interventional procedures. [ABSTRACT FROM AUTHOR]