Transcranial Color-Coded Duplex Sonography for Detection of Distal Internal Carotid Artery Stenosis

• DOI: 10.3174/ajnr.a0789
• Publication Date: 2007-11-17T01:53:34Z
• Authors: J. Valaikiene; G. Schuierer; B. Ziemus; J. Dietrich; U. Bogdahn; F. Schlachetzki
• Keywords: Duplex (building); Duplex ultrasonography; Transcranial Doppler

Gradation of high-grade intracranial internal carotid artery (ICA) stenosis poses a challenge to noninvasive neurovascular imaging, which seems critical for angioplasty in the ICA segments C1 and C5. We investigated cutoff values transcranial color-coded sonography (TCCS) compared this method with "gold standard," digital subtraction angiography (DSA).Forty patients (mean age, 58.9 +/- 13.8 years) lesions were prospectively examined by using TCCS DSA. Two standard coronal imaging planes used evaluate ICA. In addition, control group 128 volunteers without cerebrovascular disease 48.8 15.9 was establish velocity values.DSA confirmed 96 stenoses 8 occlusions study population. 9% 7% cases, confined or C5 segment >50% 70%, respectively. Receiver-operating curves demonstrated >70% when peak systolic (PSV) >200 cm/s (specificity, 100%; sensitivity, 71%) C1/submandibular index >3 93%; 86%).TCCS is reliable adjunctive detect quantify significant The assessment C1/ICA velocities maximizes diagnostic accuracy extracranial coexists. Further studies need be performed compare accuracies MR that