According to DSA results and surgical findings , the sensitivity , specificity , and the accuracy of 16 slices CTA for the detection of all aneurysms were 100% , 100% , and 93. 9% respectively.

• 根据DSA资料及手术结果；CTA发现颅内动脉瘤的敏感性为100%25；特异性为100%25；准确性为 93.；9%25。