A Modified Length-Based Grading Method for Assessing Coronary Artery Calcium Severity on Non-Electrocardiogram-Gated Chest Computed Tomography: A Multiple-Observer Study

Authors
Suh Young Kim, Young Joo Suh, Na Young Kim, Suji Lee, Kyungsun Nam, Jeongyun Kim, Hwan Kim, Hyunji Lee, Kyunghwa Han, Hwan Seok Yong
Journal
Korean Journal of Radiology
Related Product

Research

Date Published
2023.04
Summary

In this retrospective study, a simplified ordinal scoring method referred to as the modified length-based grading was validated for assessing coronary artery calcium (CAC) severity on non-electrocardiogram (ECG)-gated chest computed tomography (CT). The study included 120 patients who underwent both non-ECG-gated chest CT and ECG-gated cardiac CT. Six radiologists independently used two scoring methods, visual assessment and modified length-based grading, to assess CAC severity on chest CT. The Agatston score categories on cardiac CT served as the reference standard. The results indicated that the modified length-based grading method demonstrated better interobserver agreement and agreement with cardiac CT than visual assessment. In this study, CT images and patient information were reviewed and anonymized using a dedicated server, AVIEW Research, by Coreline Soft Inc., which was accessed by the six observers for image review and grading. This study concludes that the modified length-based grading method effectively evaluates CAC on non-ECG-gated chest CT.

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