| Comparison of dual-source and electron beam computed tomography for the assessment of coronary artery calcium scoring. | |
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MedLine Citation:
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PMID: 22010027 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Objective: Cardiac CT allows the detection and quantification of coronary artery calcification (CAC). Electron beam computed tomography (EBCT) has been widely replaced by high-end CT generations in the assessment of CAC. The aim of this study was to compare the CAC scores derived from an EBCT with those from a dual-source CT (DSCT). Methods: We retrospectively selected 92 patients (61 men; mean age, 60.7±12 years) from our database, who underwent both EBCT and DSCT. CAC was assessed using the Agatston score by two independent readers (replicates: 1, 2; 3 = mean of reading 1 and 2). Results: EBCT scores were on average slightly higher than DSCT scores (281±569 vs 241±502; p < 0.05). In regression analysis R(2)-values vary from 0.956 (1) to 0.966 (3). We calculated a correction factor as EBCT = (DSCT+1)**1.026-1. When stratifying into CAC categories (0, 1-99, 100-399, 400-999 and ≥1000), 79 (86%) were correctly classified. From those with positive CAC scores, 7 out of 61 cases (11%, κ  =  0.81) were classified in different categories. Using the corrected DSCT CAC score, linear regression analysis for the comparison to the EBCT results were r  =  0.971 (p < 0.001), with a mean difference of 6.4±147.8. Five subjects (5.4%) were still classified in different categories (κ  =  0.84). Conclusion: CAC obtained from DSCT are highly correlated with the EBCT measures. Using the calculated correction factor, agreement only marginally improved the clinical interpretation of results. Overall, for clinical purposes, face value use of DSCT-derived values appears as useful as EBCT for CAC scoring. |
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Authors:
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N Reinsch; A A Mahabadi; N Lehmann; S Möhlenkamp; C Hoefs; B Sievers; T Budde; R Seibel; K-H Jöckel; R Erbel |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-10-18 |
Journal Detail:
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Title: The British journal of radiology Volume: - ISSN: 1748-880X ISO Abbreviation: - Publication Date: 2011 Oct |
Date Detail:
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Created Date: 2011-10-19 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0373125 Medline TA: Br J Radiol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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West-German Heart Center Essen, Department of Cardiology, University of Duisburg-Essen, Germany. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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