title: Visualization of anomalous origin and course of coronary arteries in 748 consecutive symptomatic patients by 64-slice computed tomography angiography.
abstract: BACKGROUND
  Coronary artery anomalies (CAAs) are currently undergoing profound changes in understanding potentially pathophysiological mechanisms of disease. Aim of this study was to investigate the prevalence of anomalous origin and course of coronary arteries in consecutive symptomatic patients, who underwent cardiac 64-slice multidetector-row computed tomography angiography (MDCTA).
  
  
  METHODS
  Imaging datasets of 748 consecutive symptomatic patients referred for cardiac MDCTA were analyzed and CAAs of origin and further vessel course were grouped according to a recently suggested classification scheme by Angelini et al.
  
  
  RESULTS
  An overall of 17/748 patients (2.3%) showed CAA of origin and further vessel course. According to aforementioned classification scheme no Subgroup 1- (absent left main trunk) and Subgroup 2- (anomalous location of coronary ostium within aortic root or near proper aortic sinus of Valsalva) CAA were found. Subgroup 3 (anomalous location of coronary ostium outside normal "coronary" aortic sinuses) consisted of one patient with high anterior origin of both coronary arteries. The remaining 16 patients showed a coronary ostium at improper sinus (Subgroup 4). Latter group was subdivided into a right coronary artery arising from left anterior sinus with separate ostium (subgroup 4a; n = 7) and common ostium with left main coronary artery (subgroup 4b; n = 1). Subgroup 4c consisted of one patient with a single coronary artery arising from the right anterior sinus (RAS) without left circumflex coronary artery (LCX). In subgroup 4d, LCX arose from RAS (n = 7).
  
  
  CONCLUSIONS
  Prevalence of CAA of origin and further vessel course in a symptomatic consecutive patient population was similar to large angiographic series, although these patients do not reflect general population. However, our study supports the use of 64-slice MDCTA for the identification and definition of CAA.
authors.affiliation: Ludwig-Maximilians-University, Department of Cardiology, Grosshadern Campus, Munich, Germany. franz.ziegler@med.uni-muenchen.de
authors.forename: Franz
authors.initials: F
authors.lastname: von Ziegler
authors.forename: Marco
authors.initials: M
authors.lastname: Pilla
authors.forename: Lori
authors.initials: L
authors.lastname: McMullan
authors.forename: Prasad
authors.initials: P
authors.lastname: Panse
authors.forename: Alexander W
authors.initials: AW
authors.lastname: Leber
authors.forename: Norbert
authors.initials: N
authors.lastname: Wilke
authors.forename: Alexander
authors.initials: A
authors.lastname: Becker
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D015331:Cohort Studies; D017023:Coronary Angiography / Q000379:methods*; D003330:Coronary Vessel Anomalies / Q000000981:diagnostic imaging* / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D015995:Prevalence; D014057:Tomography, X-Ray Computed; D055815:Young Adult