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Updated: May 5, 2026

Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans
Published on: August 28, 2018
Calcified Coronary Artery Disease: Pathology, Prevalence, Predictors and Impact on Outcomes
Angela McInerney1, Seán O Hynes2,3, Nieves Gonzalo4
1Department of Interventional Cardiology, Galway University Hospital Galway, Ireland.
Insights
Coronary artery calcium, even without blockage, indicates poor prognosis and increases cardiovascular event risk. Modifying calcium before stenting improves outcomes and is aided by intracoronary imaging.
Area of Science:
- Cardiovascular Medicine
- Interventional Cardiology
- Pathophysiology
Background:
- Calcified coronary artery disease is common, affecting 25-30% of patients undergoing percutaneous coronary intervention.
- Coronary calcium presence, even without obstruction, is linked to adverse clinical outcomes.
- Coronary calcium scoring via CT predicts cardiovascular events beyond traditional risk factors.
Purpose of the Study:
- To review the pathophysiology, prevalence, predictors, and clinical impact of coronary calcium.
- To highlight the challenges and strategies for managing calcified coronary lesions during percutaneous coronary intervention.
- To emphasize the role of intracoronary imaging in optimizing stent placement in calcified arteries.
Main Methods:
- Review of existing literature on coronary calcium pathophysiology and clinical significance.
- Analysis of data regarding the impact of calcified versus non-calcified lesions on percutaneous coronary intervention outcomes.
- Discussion of techniques for calcium modification and the role of intracoronary imaging.
Main Results:
- Calcified coronary stenoses lead to higher rates of target lesion failure and major adverse cardiovascular events post-revascularization compared to non-calcified lesions.
- Calcium modification before stenting is crucial for optimal stent expansion and improved procedural success.
- Intracoronary imaging aids in detecting coronary calcium and confirming adequate stent optimization.
Conclusions:
- Coronary calcium is a significant marker of cardiovascular risk and impacts percutaneous coronary intervention outcomes.
- Effective management of coronary calcium, including pre-stenting modification and imaging guidance, is essential for improving patient prognosis.
- Further research into the pathophysiology and treatment of calcified coronary artery disease is warranted.
Abstract:
Calcified coronary artery disease is a common clinical finding and is visible angiographically in 25-30% of patients presenting for percutaneous coronary intervention. The presence of coronary calcium, even without coronary artery obstruction, confers an adverse clinical prognosis. Coronary calcium score on CT is additive in predicting risk of cardiovascular events beyond traditional scoring systems. Deposition of calcium in coronary arteries is initiated by the formation of an atherosclerotic plaque. Thereafter, multiple processes and pathways are involved, resulting in initial microcalcifications that coalesce into calcium sheets. Calcified nodules are thought to occur from rupture of these sheets. Calcified coronary stenoses requiring revascularisation result in greater target lesion failure and overall major adverse cardiovascular events than noncalcified lesions, regardless of the mode of revascularisation. Modifying calcium prior to stenting to optimise stent expansion is required and intracoronary imaging can greatly facilitate not only the detection of coronary calcium, but also the confirmation of adequate modification and stent optimisation. In this review, the authors examine the pathophysiology, prevalence, predictors and impact on outcomes of coronary calcium.
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