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| Application value of transcranial color-coded duplex sonography in the diagnosis of cerebral artery stenosis or occlusion |
| HOU Wei-hua, DUAN Yun-you, LIU Xi, ZHAO Zhen-wei, DENG Jian-ping, LIU Yu-feng, CAO Tie-sheng |
| Tangdu Hospital, the Fourth Military Medical University, Xi’an 710038, China |
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Abstract Objective: The aim of this study was to evaluate diagnostic value of transcranial color-coded duplex sonography(TCCS) on the cerebral artery stenosis or occlusion. Methods: Seventy patients suspected of cerebrovascular disease were examined by TCCS. The results were compared with digital subtract angiography(DSA), which was the gold standard. Results: The validity index, including the sensitivity, specificity, false positive rate, false negative rate, accuracy, positive predictive value, negative predictive value, positive likelihood ratio, negative likelihood ratio, and Youden’s index, were 75.0%, 81.6%, 18.4%, 25.0%, 78.6%, 77.4%, 79.5%, 4.1, 0.3 and 0. 57 respectively. The agreement rate and Kappa value were 78.6% and 0.57. Conclusions: TCCS was reliable in the diagnosis of cerebral artery stenosis or occlusion. It could be chosen as a method of screening diagnosis.
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Received: 21 March 2007
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Corresponding Authors:
DUAN Yun-you
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2007, Vol. 18 
