经颅多普勒超声诊断脑动脉狭窄的价值与准确性分析

Analysis of the Value and Accuracy of Transcranial Doppler Ultrasound in Diagnosis of Cerebral Artery Stenosis

目的研究分析经颅多普勒超声诊断脑动脉狭窄的价值与准确性。方法选取北京市怀柔中医医院功能科2016年6月—2017年12月怀疑为脑动脉狭窄的56例患者作为研究对象,给予CTA检查和经颅多普勒超声检查,评价经颅多普勒超声诊断脑动脉狭窄的价值与准确性。结果 56例怀疑为脑动脉狭窄的患者中,经颅多普勒超声检查结果显示脑动脉狭窄29例,CTA检查结果显示脑动脉狭窄32例,经统计学分析,差异无统计学意义(χ~2=0.324,P>0.05)。经颅多普勒超声对脑动脉狭窄的可靠性和真实性指标:卡帕值、符合率、特异度、灵敏度、假阳性率、假阴性率、准确度分别为:0.57、92.86%、75%、75%、25%、25%、92.86%。结论经颅多普勒超声检查具有无创、操作简便、费用低廉、可以重复检查等优点,有一定的可靠性和真实性,可以作为筛查脑动脉狭窄的手段。

Objective To study the value and accuracy of transcranial Doppler ultrasound in the diagnosis of cerebral artery stenosis. Methods 56 cases of patients suspected with cerebral artery stenosis from June 2016 to December 2017 in our hospital were enrolled in this study. CTA and transcranial Doppler echocardiography were performed to evaluate the value and accuracy of transcranial Doppler ultrasound in the diagnosis of cerebral artery stenosis. Results Transcranial Doppler ultrasonography showed cerebral arterial stenosis was in 29 cases of 56 cases of patients suspected with cerebral artery stenosis. CTA examination showed cerebral artery stenosis was in 32 cases of patients. There was no significant difference（χ2=0.324,P〉 0.05）. The reliability and authenticity indicators of transcranial Doppler ultrasound of cerebral artery stenosis： kappa value, coincidence rate, specificity, sensitivity, false positive rate, false negative rate,accuracy were： 0.57, 92.86%, 75%, 75%, 25%, 25%, 92.86%. Conclusion Transcranial Doppler ultrasonography has the advantages of noninvasiveness, simple operation, low cost, repeated examination and so on. It has a certain reliability and authenticity and can be used as a screening method for cerebral artery stenosis.