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[Diagnostic performance of 64-channel multislice computed tomography in assessment of significant coronary artery disease in subjects suspected as acute coronary syndrome and stable angina.].

OBJECTIVE
To evaluate the diagnostic accuracy of 64-channel multislice spiral computed tomography (MSCT) in subjects with presentations suggestive of stable angina or acute coronary syndrome.


METHODS
Subjects received both 64-channel MSCT and coronary angiography, from Feb. 2006 to Feb. 2007, were enrolled for retrospective analyses. Results of the quantitative coronary angiography were used as the "Golden criteria", accuracy of 64-channel MSCT were evaluated in the overall sample, as well as in subjects suspected of stable angina and acute coronary syndrome.


RESULTS
A total of 120 subjects were enrolled in the analyses. On the patient level, the sensitivity, specificity, and accuracy of 64-channel MSCT in detecting significant stenoses were 92.5%, 50%, and 87.5%, respectively. The overall ROC area under curve was 0.71. On the artery level, sensitivity, specificity, positive predictive value, negative predictive value, and ROC area under curve of 64-channel MSCT were 69.9%, 83.8%, 81.1%, 73.7%, and 0.77, respectively. Further analyses showed the sensitivity, specificity, positive predictive value, negative predictive value, and ROC area under curve of 64-channel MSCT in subjects presenting as stable angina and in subjects presenting as acute coronary syndrome were as follows: 70.2% vs 69.2%, 76.2% vs 86.0%, 74.7% vs 85.6%, 71.9% vs 69.9%, and 0.73 vs 0.78.


CONCLUSION
The accuracy rates of 64-channel MSCT in subjects presenting as stable angina and in subjects presenting as acute coronary syndrome were similar.