title: Prevalence of Congenital Coronary Artery Anomalies and Variants in 2697 Consecutive Patients Using 64-Detector Row Coronary CTAngiography.
abstract: BACKGROUND
  Coronary artery anomalies are not common, but could be very serious.
  
  
  OBJECTIVE
  This study determines the frequency of coronary anomalies and normal variants by multi-detector-row computed tomography (MDCT).
  
  
  METHODS
  The results of cardiac MDCT study in 2697 consecutive patients were analyzed retrospectively. Acquisition was performed by a 64-detector row CT machine. Imaging results were assessed by experienced radiologists.
  
  
  RESULTS
  Myocardial bridging was by far the most frequent coronary variant (n = 576, 21.3%). Eighty-three subjects (3.1%) showed other coronary anomalies and variants. Anomalies of origination and course of the left main coronary artery (LMCA) were detected in 1.09% of the subjects. The frequency of these anomalies in the right coronary artery (RCA), left circumflex artery (LCx), left anterior descending artery (LAD), posterior descending artery (PDA) and obtuse marginal (OM) artery were 1.24%, 0.33%, 0.1%, 0.07% and 0.03%, respectively. The single coronary pattern was seen in 0.18% and coronary fistulas in 0.07%.
  
  
  CONCLUSIONS
  Based on the fact that coronary CT-angiography using MDCT can display different coronary anomalies, this study shows similar results to other reports on the subject. Future advances in the performance of CT machines will further improve the quality of CT-based cardiac imaging.
authors: Cardiac CT Department, Modarres Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran ; CT Department, Noor Medical Imaging Center, Tehran, Iran ; Advanced Diagnostic and Interventional Radiology Research Center (ADIR), Tehran University of Medical Sciences, Tehran, Iran.
authors: Abbas Arjmand
authors: AA
authors: Shabestari
authors: Shahram
authors: S
authors: Akhlaghpoor
authors: Reza
authors: R
authors: Tayebivaljozi
authors: Farzaneh
authors: F
authors: Fattahi Masrour
keywords: Coronary Artery Disease; Patients; Tomography,X-Ray Computed