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Updated: Apr 10, 2026

Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans
Published on: August 28, 2018
Coronary artery calcification on low-dose computed tomography: comparison of Agatston and Ordinal Scores
Yu Htwe1, Matthew D Cham2, Claudia I Henschke1
1Department of Radiology, Mount Sinai School of Medicine, New York, NY.
Objective:
To compare Agatston with Ordinal Scores for the extent of coronary artery calcification (coronary artery calcium) using nongated low-dose computed tomography (CT) scans.
Materials And Methods:
A total of 631 asymptomatic participants had CT scans from 2010 to 2013. Their Ordinal and Agatston Score were classified into categories.
Results:
The Ordinal Score Categories showed excellent agreement (weighted kappa of 0.83; 95% confidence interval: 0.79-0.88) with the Agatston Score Categories.
Conclusions:
The use of the Ordinal Score is readily obtained on low-dose CT scans that are used for CT screening for lung cancer and these scores are useful for risk stratification of coronary artery disease.
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