| Comparison of Calcium Scoring With 4-Multidetector Computed Tomography (4-MDCT) and 64-MDCT: A Phantom Study. | |
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MedLine Citation:
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PMID: 22261776 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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OBJECTIVE: To determine differences in coronary artery calcium (CAC) measurement performed with the use of 2 generations of multidetector computed tomography (CT) scanners of the same manufacturer. METHODS: Agatston Score (AS) and calcium mass (CM) were measured with a 4-row scanner (AS4 and CM4) and a 64-row scanner (AS64 and CM64) using a cardiac phantom with calcium inserts. RESULTS: The results of the AS measurements (mean ± SD) varied significantly between the equipment: 880.6 ± 30.1 (AS4) vs 586.5 ± 24.0 (AS64; P < 0.0001). The AS interscanner variability was 31.6% for the phantom and from 25.5% to 110.1% for particular inserts. Mean ± SD CM values were different as well: 192.8 ± 5.0 mg (CM4) vs 152.4 ± 2.6 mg (CM64; P < 0.0001). Determination of CM with 64-row CT was more accurate than that with an older scanner; the mean relative error was -9.1% and 15.0%, respectively (P < 0.0001). The CM interscanner variability was 23.3% for the phantom and from 19.0% to 122.8% for particular inserts. The interexamination variability ranged from 1.7% (CM64) to 5.6% (AS4). CONCLUSIONS: Coronary artery calcium scoring with the 64-row CT scanner is more accurate than with the 4-row device The difference between the results of AS and CM measurements carried out with both scanners is statistically significant. |
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Authors:
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Zbigniew Serafin; Graz˙yna Rusak; Piotr Strześniewski; Katarzyna Laskowska; Władysław Lasek |
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Publication Detail:
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Type: JOURNAL ARTICLE |
Journal Detail:
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Title: Journal of computer assisted tomography Volume: 36 ISSN: 1532-3145 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-20 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7703942 Medline TA: J Comput Assist Tomogr Country: - |
Other Details:
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Languages: ENG Pagination: 88-93 Citation Subset: - |
Affiliation:
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From the Department of Radiology and Diagnostic Imaging, Nicolaus Copernicus University, Collegium Medicum, Bydgoszcz, Poland. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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