动脉瘤性蛛网膜下腔出血的病因诊断

The etiological diagnosis of subarachnoid hemorrhage caused by aneurysm

摘要: 目的：探讨CT血管造影(CTA)诊断动脉瘤性蛛网膜下腔出血(SAH)病因的价值。方法：对经CT平扫明确诊断的自发性SAH 24例患者，在入院后均做CTA和数字减影血管造影(DSA)，并就CTA和DSA诊断作一比较。结果：24例CTA检查后22例共发现26个脑动脉瘤，CTA能清楚显示动脉瘤的位置、大小、形态、瘤颈位置及周围组织的情况，以DSA作为金标准，CTA灵敏度92.86%，特异度100.00%。结论：CTA可作为蛛网膜下腔出血尤其是危重患者早期病因学诊断的首选方法。

Abstract: Objective:To explore the value of CT angiography(CTA) in the etiological diagnosis of subarachnoid hemorrhage(SAH) caused by aneurysm.Methods:Twenty-four spontaneous SAH patients diagnosed by CT plain scan were detected for comparative analysis using CTA and digital subtraction angiography(DSA).Results:Twenty-two cases with 26 aneurysms in 24 cases were found by CTA.CTA displayed the location,size,shape,neck and surrounding tissue of aneurysm.Using DSA as the gold standard,the sensitivity and specificity of CTA were 92.86% and 100.00% respectively.Conclusions:CTA can be a preferred method for the early etiological diagnosis of SAH patients,especially for critical patients.