CTICasesHigh Origin of the Right Coronary Artery
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Imaging findings
Chest CT demonstrates the right coronary artery originating abnormally high above the sinotubular junction, at the level of the main and right pulmonary artery bifurcation. The vessel courses medially and descends between the outflow tracts.
Key takeaways
High origin of a coronary artery is a benign anatomical variant, most commonly involving the right coronary artery. While not typically associated with myocardial ischemia or sudden cardiac death, identifying this high take-off is critical prior to coronary catheterization or cardiothoracic surgery to avoid accidental injury or cannulation difficulties.
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