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Anomalous double right coronary arteries: characteristic multidetector-row computed tomography findings

Sa Rah Yoon1, Ah Young Jung, Seon Hyeong Choi

  • 1Department of Radiology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea. drysr@unitel.co.kr

Journal of Computer Assisted Tomography
|September 24, 2010
PubMed

Insights

Multidetector-row computed tomography (MDCT) can easily detect anomalous double right coronary arteries (RCAs), a rare coronary anomaly. This study classifies these double RCAs into three distinct types based on their origin and branching patterns.

Area of Science:

  • Cardiology
  • Radiology
  • Anatomical Variants

Background:

  • Anomalous double right coronary arteries (RCAs) are exceedingly rare coronary artery variations.
  • Accurate identification of coronary anomalies is crucial for clinical management and surgical planning.

Purpose of the Study:

  • To characterize the multidetector-row computed tomography (MDCT) findings of anomalous double right coronary arteries (RCAs).
  • To classify the anatomical variations of double RCAs identified via MDCT.

Main Methods:

  • A retrospective analysis of 2569 patients undergoing MDCT coronary angiography over three years.
  • Identification and detailed analysis of five patients (0.2%) diagnosed with anomalous double RCAs.
  • Evaluation of orifice number and location, anatomical distribution, branching patterns, and presence of atherosclerosis.

Main Results:

  • All five identified cases of double RCAs originated from the right sinus of Valsalva.
  • Three distinct types of double RCAs were observed based on their anatomical characteristics.
  • Type 1: Two separate orifices; Type 2: A common orifice with two separate RCAs; Type 3: A common main RCA with proximal bifurcation.

Conclusions:

  • Anomalous double RCAs, though rare, are readily detectable using MDCT imaging.
  • The identified double RCA variants can be systematically classified into three distinct morphological types.
Abstract

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