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64-slice computed tomography angiography in the diagnosis and assessment of coronary artery disease : systematic review and meta-analysis

By Graham Mowatt, Jonathan Alistair Cook, Graham Scott Hillis, Shonagh Mary Walker, Cynthia Mary Fraser, Xueli Jia and Norman Robert Waugh

Abstract

Objective \ud To assess whether 64-slice computed tomography (CT) angiography might replace some coronary angiography (CA) for diagnosis and assessment of coronary artery disease (CAD). \ud Methods \ud We searched electronic databases, conference proceedings and scanned reference lists of included studies. Eligible studies compared 64-slice CT with a reference standard of CA in adults with suspected/known CAD, reporting sensitivity and specificity or true and false positives and negatives. Data were pooled using the hierarchical summary receiver operating characteristic model. \ud Results \ud Forty studies were included; 28 provided sufficient data for inclusion in the meta-analyses, all using a cutoff of ≥ 50% stenosis to define significant CAD. In patient-based detection (n=1286) 64-slice CT pooled sensitivity was 99% (95% credible interval (CrI) 97 to 99%), specificity 89% (95% CrI 83 to 94%), median positive predictive value (PPV) across studies 93% (range 64 to 100%) and negative predictive value (NPV) 100% (range 86 to 100%). In segment-based detection (n=14,199) 64-slice CT pooled sensitivity was 90% (95% CrI 85 to 94%), specificity 97% (95% CrI 95 to 98%), median positive predictive value (PPV) across studies 76% (range 44 to 93%) and negative predictive value (NPV) 99% (range 95 to 100%). \ud Conclusions \ud 64-slice CT is highly sensitive for patient-based detection of CAD and has high NPV. An ability to rule out significant CAD means that it may have a role in the assessment of chest pain, particularly when the diagnosis remains uncertain despite clinical evaluation and simple non-invasive testing.UK National Institute for Health Research Health Technology Assessment programme (project number 06/15/01). \ud The Health Services Research Unit is core funded by the Chief Scientist Office of the Scottish Government Health Directorates.Peer reviewedAuthor versio

Topics: 64-slice computed tomography, Coronary artery disease, Meta-analysis, Systematic review, RC Internal medicine
Publisher: BMJ
Year: 2008
DOI identifier: 10.1136/hrt.2008.145292
OAI identifier: oai:aura.abdn.ac.uk:2164/281

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