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Updated: Feb 14, 2026

Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans
Published on: August 28, 2018
ECG-gated multislice spiral computed tomography to clarify lesion severity in a case of left main stenosis.
Ralf Koos1, Andreas Horst Mahnken, Anil-Martin Sinha
1Medical Clinic I, University Hospital RWTH Aachen, Germany. rkoos@ukaachen.de
Abstract:
This case report describes the use of retrospectively ECG-gated multislice spiral computed tomography (MSCT) for evaluation of lesion severity in a patient with relevant left main stenosis by visual analysis of the coronary angiogram. For further diagnostic evaluation the patient underwent intravascular ultrasound (IVUS) imaging, which showed a maximal 30% area stenosis, and MSCT, which demonstrated a maximal 48% area stenosis. MSCT was useful in this case to defer cardiac surgery and might be used as a noninvasive alternative to IVUS imaging in case of doubtful lesion severity.
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