摘要
目的:评价经颅多普勒超声(TCD)检测大脑中动脉(MCA)主干严重狭窄或梗阻性病变的准确性。材料和方法:对47例患MCA区脑梗死的患者进行TCD及磁共振血管造影(MRA)检查,以MRA为金标准,以收缩峰值血流速度(PSV)作为动脉狭窄的诊断参数,利用四格表法,分析TCD检测上述病变的准确性。结果:TCD对MCA中度、重度狭窄及梗阻性病变检出的敏感性、特异性、准确性、阳性预期值及阴性预期值分别为85.3%、92.3%、87.2%、96.7%、70.6%;91.7%、91.3%、91.5%、91.7%、91.3%;62.5%、100%、93.6%、100%、92.9%。与MRA完全相符率为80.9%(3847)。结论:在诊断MCA严重狭窄或梗阻性病变时,TCD与MRA有较好的一致性。
Purpose: To evaluate the accuracy of TCD in exploring the serious stenosis or occlusion of MCA. Materials and Methods: 47 patients with cerebral infarction in MCA territory underwent TCD and MRA. The peak systolic velocity(PSV) was taken as the TCD diagnostic parameter of arterial stenosis. Results: The sensitivity, specificity, accuracy, PPV and NPV of TCD in moderate, severe stenosis and occlusion of MCA were 85.3%, 92.3%, 87.2%, 96.7%, 70.6%;91.7%, 91.3%, 91.5%, 91.7%, 91.3%;and 62.5%、100%、93.6%、100%、92.9% respectively. The corresponding rate between TCD and MRA was 80.9%(38/47). Conclusion: The TCD correlated well with MRA in diagnosing serious stenotic or occlusive lesions of MCA.
出处
《中国医学影像学杂志》
CSCD
2005年第4期262-264,共3页
Chinese Journal of Medical Imaging
基金
首都医学发展科研基金-北京医学卫生科技重点支持项目(项目编号:2002-2022)
