| Volumetric quantification of coronary artery calcifications using dual-slice spiral CT scanner: improved reproducibility of measurements with 180 degrees linear interpolation algorithm. | |
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MedLine Citation:
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PMID: 11242229 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: The purpose of this work was to determine the reproducibility of coronary total calcium score (TCS) with dual-slice helical CT and compare three acquisition protocols. METHOD: Fifty patients (59 +/- 10 years old) underwent dual-slice helical CT (collimation = 2 x 2.5 mm) and coronary angiography. Two successive scans were performed, resulting in three sets of images: pitch = 1, 360 degrees linear interpolation (LI) (A360); pitch = 1, 180 degrees LI (A180); and pitch = 1.5, 180 degrees LI (B180). TCS values, calculated using a volumetric method with a threshold of 90 HU, were compared, and the interscan variation was determined. Diagnostic performances were compared with receiver operating characteristic curves. RESULTS: Protocol A360 provided significantly lower TCS than protocols A180 and B180 (p < 0.0001). No statistical difference was seen between A180 and B180, which provided the lowest interscan variation (40 +/- 58%). However, no significant clinical impact of the observed interscan variations was found. CONCLUSION: Reproducibility of TCS with dual-slice helical CT is improved by the 180 LI algorithm. However, dual-slice helical CT is not sufficiently reproducible to allow serial quantification of TCS over time. |
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Authors:
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S D Qanadli; B Mesurolle; P Aegerter; T Joseph; V L Oliva; M C Guertin; O Dubourg; M Fauchet; O A Goeau-Brissonniére; P Lacombe |
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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: 25 ISSN: 0363-8715 ISO Abbreviation: J Comput Assist Tomogr Publication Date: 2001 Mar-Apr |
Date Detail:
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Created Date: 2001-03-12 Completed Date: 2001-04-05 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 7703942 Medline TA: J Comput Assist Tomogr Country: United States |
Other Details:
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Languages: eng Pagination: 278-86 Citation Subset: IM |
Affiliation:
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Department of Radiology, University René Descartes Paris V, Ambroise Paré Hospital, Boulogne, France. salah.qanadli@apr.ap-hop-paris.fr |
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aged, 80 and over Algorithms Calcinosis / radiography* Cineangiography Coronary Angiography Coronary Artery Disease / radiography Coronary Disease / radiography* Female Humans Male Middle Aged ROC Curve Reproducibility of Results Sensitivity and Specificity Tomography Scanners, X-Ray Computed* Tomography, X-Ray Computed / methods* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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