2013•Journal of Clinical Ultrasound in MedicineRequires access
Value of transcranial color Doppler in diagnosis of internal carotid artery severe stenosis or occlusion
Chunhong Hu
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Abstract
Objective To evaluate the value of TCD in diagnosis of internal carotid artery severe stenosis or occlusion. Methods Twenty-one patients with internal carotid artery severe stenosis or occlusion were examined by TCD,then DSA or MRA within one week. The results of TCD and DSA (or MRA) were compared. Results The sensitivity of TCD in diagnosis of carotid stenosis was 92.00% ,the specificity was 94.12%.The false positive rate was 5.88%. The false negative rate was 8.00% and the diagnostic accuracy was 92.86% . The accuracy of TCD in diagnosis of internal carotid artery severe stenosis or occlusion was 80.95%. The accuracy of TCD in diagnosis of stenosis degree was 69.23%. Conclusion TCD is able to be used as a screening method in diagnosis of internal carotid artery stenosis,but for judgement of internal carotid artery stenosis degree,TCD still has its limitations.