title: Prevalence of congenital coronary artery anomalies and variants in 726 consecutive patients based on 64-slice coronary computed tomography angiography.
abstract: BACKGROUND
  Coronary computed tomography angiography (CCTA) is helpful in making a precise noninvasive evaluation of coronary anatomy, allowing concomitant evaluation of other cardiac structures. The aim of this study was to determine the prevalence of coronary artery variations detected by 64-slice multi detector CT.
  
  
  METHODS
  The results of ECG-gated CCTA in 726 consecutive patients (mean age 58 years) were analysed retrospectively. The main indications for CCTA were a typical chest pain, angina pectoris, screening for coronary artery disease and determination of the patency of bypass grafts or stents. Acquisition was performed with a 64-detector CT scanner with retrospective ECG gating. Imaging results were assessed by experienced cardiovascular radiologist.
  
  
  RESULTS
  The overall incidence of coronary artery anomalies was 1.1% (8 out of 726 participants). The most common anomaly was an anomalous origin of the circumflex artery from the right coronary sinus with a retroaortic course (4 patients,0.6%), followed by origin of right coronary artery from the left coronary sinus (2 patients, 0.3%). One patient with abnormal origin of the left main artery from the right coronary sinus (0.1%) and 1 patient with a circumflex artery origin from the proximal segment of the right coronary artery (0.1%) were observed, both with retroartic course.
  
  
  CONCLUSIONS
  CCTA is a noninvasive imaging technique useful for the precise evaluation of variations of the coronary arteries. This study shows similar results to other reports on this subject.
authors.affiliation: Department of Radiology, Barlicki University Hospital, Medical University of Lodz, Poland. konrad.oskar@gmail.com.
authors.forename: K
authors.initials: K
authors.lastname: Szymczyk
authors.forename: M
authors.initials: M
authors.lastname: Polguj
authors.forename: E
authors.initials: E
authors.lastname: Szymczyk
authors.forename: A
authors.initials: A
authors.lastname: Majos
authors.forename: P
authors.initials: P
authors.lastname: Grzelak
authors.forename: L
authors.initials: L
authors.lastname: Stefańczyk
mesh_terms: D017023:Coronary Angiography / Q000379:methods*; D003330:Coronary Vessel Anomalies / Q000000981:diagnostic imaging*; D003331:Coronary Vessels / Q000000981:diagnostic imaging* / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed / Q000379:methods*