Prevalence of anatomical variants and coronary anomalies in 543 consecutive patients studied with 64-slice CT coronary angiography

Filippo Cademartiri, Ludovico La Grutta, Roberto Malagò, Filippo Alberghina, Willem B. Meijboom, Francesca Pugliese, Erica Maffei, Anselmo Alessandro Palumbo, Annachiara Aldrovandi, Michele Fusaro, Valerio Brambilla, Paolo Coruzzi, Massimo Midiri, Nico R A Mollet, Gabriel P. Krestin

Research output: Contribution to journalArticlepeer-review


The aim of our study was to assess the prevalence of variants and anomalies of the coronary artery tree in patients who underwent 64-slice computed tomography coronary angiography (CT-CA) for suspected or known coronary artery disease. A total of 543 patients (389 male, mean age 60.5±10.9) were reviewed for coronary artery variants and anomalies including post-processing tools. The majority of segments were identified according to the American Heart Association scheme. The coronary dominance pattern results were: right, 86.6%; left, 9.2%; balanced, 4.2%. The left main coronary artery had a mean length of 112±55 mm. The intermediate branch was present in the 21.9%. A variable number of diagonals (one, 25%; two, 49.7%; more than two, 24%; none, 1.3%) and marginals (one, 35.2%; two, 46.2%; more than two, 18%; none, 0.6%) was visualized. Furthermore, CT-CA may visualize smaller branches such as the conus branch artery (98%), the sinus node artery (91.6%), and the septal branches (93%). Single or associated coronary anomalies occurred in 18.4% of the patients, with the following distribution: 43 anomalies of origin and course, 68 intrinsic anomalies (59 myocardial bridging, nine aneurisms), three fistulas. In conclusion, 64-slice CT-CA provides optimal visualization of the variable and complex anatomy of coronary arteries because of the improved isotropic spatial resolution and flexible post-processing tool.

Original languageEnglish
Pages (from-to)781-791
Number of pages11
JournalEuropean Radiology
Issue number4
Publication statusPublished - Apr 2008


  • Anatomical variants
  • Anomalies
  • Coronary artery circulation
  • Multislice computed tomography

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology


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