目的：探讨CTA诊断颅内动脉瘤的价值和提高诊断的敏感性。方法回顾性分析126例拟诊为颅内动脉瘤CTA表现，对颅内动脉瘤的部位及大小进行分组观察，与DSA对照，统计CTA对颅内动脉瘤的正确检出率，对漏诊、误诊病例进行分析。结果颅内动脉瘤共124例，共152个。CTA正确检出113例，正确率为91.1%；正确检出动脉瘤140个，正确率为92.1%。12个动脉瘤漏诊，其中多发性、<3mm和3-5mm组别动脉瘤CTA漏诊数较高，与DSA比较，检出率较低，具有统计学意义。结论 CTA诊断颅内动脉瘤的正确率较高，但多发性、较小的动脉瘤较DSA漏诊率高，如在诊断中加以注意，能提高CTA诊断动脉瘤的敏感性。%Objective To evaluate values and sensitivity of CTA diagnosing intracranial aneurysms. Methods The CTA manifestations of dubiously intracranial aneurysms in 126 cases were retrospectively analysed and location and size of intracranial aneurysms were grouped and observed. Collating with DSA, correct rate of CTA diagnosing intracranial aneurysms were accounted and the cases leaked and mistaked were analysed. Results In 124 cases suffered from intracranial aneurysms including 152 lesions, 113 cases and 140 lesions were detected by CTA which correct rate was respectively 91.1% and 92.1%. Twelve lesions of intracranial aneurysms weren'nt detected by CTA in which multi-lesions, sizes of <3mm and 3-5mm intracranial aneurysms were main leaked part. The detceted rate of CTA was lower than of DSA and it had statistical significance. Conclusions The correct rate of CTA diagnosing intracranial aneurysms was high but leaked rate of CTA in multi-lesions, small sizes was high by compared DSA. If more notice in some aspect, sensitivity of CTA diagnosing intracranial aneurysms can be promoted.
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