Publication date: Available online 23 November 2017
Source:European Journal of Radiology
Author(s): Remko Kockelkoren, Pushpa M Jairam, John T. Murchison, Thomas P.A. Debray, Saeed Mirsadraee, Yolanda van der Graaf, Pim A.de Jong, Edwin J.R. van Beek
ObjectivesA radiological risk score that determines 5-year cardiovascular disease (CVD) risk using routine care CT and patient information readily available to radiologists was previously developed. External validation in a Scottish population was performed to assess the applicability and validity of the risk score in other populations.Methods2915 subjects aged ≥40 years who underwent routine clinical chest CT scanning for non-cardiovascular diagnostic indications were followed up until first diagnosis of, or death from, CVD. Using a case-cohort approach, all cases and a random sample of 20% of the participant's CT examinations were visually graded for cardiovascular calcifications and cardiac diameter was measured. The radiological risk score was determined using imaging findings, age, gender, and CT indication.ResultsPerformance on 5-year CVD risk prediction was assessed. 384 events occurred in 2124 subjects during a mean follow-up of 4.25 years (0–6.4 years). The risk score demonstrated reasonable performance in the studied population. Calibration showed good agreement between actual and 5-year predicted risk of CVD. The c-statistic was 0.71 (95%CI:0.67-0.75).ConclusionsThe radiological CVD risk score performed adequately in the Scottish population offering a potential novel strategy for identifying patients at high risk for developing cardiovascular disease using routine care CT data.
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Κυριακή 3 Δεκεμβρίου 2017
Validation of an imaging based cardiovascular risk score in a Scottish population
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