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Updated: Jun 13, 2026
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Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans
Published on: August 28, 2018
[Coronary CT angiography using prospective ECG triggering: high diagnostic accuracy with low radiation dose]
E Arnoldi1, I Ramos-Duran, J A Abro
1Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, Charleston, USA. Elisabeth.Arnoldi@med.uni-muenchen.de
Der Radiologe
|April 15, 2010
Summary
Coronary CT angiography with prospective ECG triggering offers accurate, non-invasive detection of significant coronary artery stenosis. This method provides high diagnostic performance comparable to invasive procedures with reduced radiation exposure.
Area of Science:
- Cardiovascular imaging
- Radiology
- Diagnostic accuracy
Background:
- Coronary artery stenosis detection is crucial for cardiovascular disease management.
- Invasive coronary angiography (ICA) is the gold standard but carries risks.
- Non-invasive alternatives like coronary CT angiography (coronary CTA) are being explored.
Purpose of the Study:
- To assess the diagnostic performance of coronary CTA with prospective ECG triggering (PT).
- To compare coronary CTA's accuracy against ICA for significant coronary artery stenosis.
- To evaluate radiation exposure associated with coronary CTA using PT.
Main Methods:
- Twenty patients underwent both coronary CTA with PT and ICA.
- A 128-slice CT scanner was utilized for coronary CTA.
- Stenosis was evaluated using the AHA-15-segment model and compared to ICA findings.
Main Results:
- Coronary CTA with PT showed 88% sensitivity and 95% specificity for significant stenosis.
- Positive and negative predictive values were 80% and 97%, respectively.
- Mean effective radiation dose was low at 2.6+/-1 mSv.
Conclusions:
- Coronary CTA with PT is a highly accurate non-invasive diagnostic tool for significant coronary artery stenosis.
- The diagnostic accuracy of coronary CTA with PT is comparable to ICA.
- This technique offers a favorable radiation dose profile.
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