关键词: 超声检查; 多普勒; 造影剂; 脑缺血; 侧支循环

Abstract: Objective To observe the intracranial collateral circulation in patients with cerebral infarction and transient ischemic attack with limited bone windows by using of contrast-enhanced transcranial color-coded Doppler (CE-TCCD). Methods Seventy patients with ischemic stroke, and transient ischemic attack of whom transcranial color-coded Doppler could not detect the intracranial blood flow because of limited bone windows, were detected the intracranial blood flow and the anterior and posterior communicating arteries of Willis ring before magnetic resonance angiography(MRA) examination. And compared the diagnosis of both. Results Seventy patients consists of 51 males and 19 females, mean age was 66.4±11.9 years old. CE-TCCD were detected in 41 communicating arteries, 38 of which were consistent with the MRA diagnosis. Diagnostic consistency between the two was good (Kappa value 0.696, P <0.001). The sensitivity of CE-TCCD was 79.2% and the specificity of it was 91.9%. Conclusion Contrast-enhanced transcranial color-coded Doppler can be used to detect intracranial collateral circulation in patients with cerebral infarction and transient ischemic attack with limited bone windows.

Key words: Ultrasonography; Doppler; Contrast media; Brain ischemia; Collateral circulation