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Erschienen in: The International Journal of Cardiovascular Imaging 2/2014

01.12.2014 | Original Paper

Reliability analysis of visual ranking of coronary artery calcification on low-dose CT of the thorax for lung cancer screening: comparison with ECG-gated calcium scoring CT

verfasst von: Yoon Kyung Kim, Yon Mi Sung, So Hyun Cho, Young Nam Park, Hye-Young Choi

Erschienen in: The International Journal of Cardiovascular Imaging | Sonderheft 2/2014

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Abstract

Coronary artery calcification (CAC) is frequently detected on low-dose CT (LDCT) of the thorax. Concurrent assessment of CAC and lung cancer screening using LDCT is beneficial in terms of cost and radiation dose reduction. The aim of our study was to evaluate the reliability of visual ranking of positive CAC on LDCT compared to Agatston score (AS) on electrocardiogram (ECG)-gated calcium scoring CT. We studied 576 patients who were consecutively registered for health screening and undergoing both LDCT and ECG-gated calcium scoring CT. We excluded subjects with an AS of zero. The final study cohort included 117 patients with CAC (97 men; mean age, 53.4 ± 8.5). AS was used as the gold standard (mean score 166.0; range 0.4–3,719.3). Two board-certified radiologists and two radiology residents participated in an observer performance study. Visual ranking of CAC was performed according to four categories (1–10, 11–100, 101–400, and 401 or higher) for coronary artery disease risk stratification. Weighted kappa statistics were used to measure the degree of reliability on visual ranking of CAC on LDCT. The degree of reliability on visual ranking of CAC on LDCT compared to ECG-gated calcium scoring CT was excellent for board-certified radiologists and good for radiology residents. A high degree of association was observed with 71.6 % of visual rankings in the same category as the Agatston category and 98.9 % varying by no more than one category. Visual ranking of positive CAC on LDCT is reliable for predicting AS rank categorization.
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Metadaten
Titel
Reliability analysis of visual ranking of coronary artery calcification on low-dose CT of the thorax for lung cancer screening: comparison with ECG-gated calcium scoring CT
verfasst von
Yoon Kyung Kim
Yon Mi Sung
So Hyun Cho
Young Nam Park
Hye-Young Choi
Publikationsdatum
01.12.2014
Verlag
Springer Netherlands
Erschienen in
The International Journal of Cardiovascular Imaging / Ausgabe Sonderheft 2/2014
Print ISSN: 1569-5794
Elektronische ISSN: 1875-8312
DOI
https://doi.org/10.1007/s10554-014-0507-8

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