Using the DSA images as the standard reference,the sensitivity,specificity and accuracy of CTA were 97.6%(95% CI,94.9%~100.7%),98.9%(95% CI,98.0%~99.8%),98.7%(95% CI,97.9%~99.5%)in detecting the segments occluded .

• 以DSA图像为标准；对于动脉完全闭塞；CTA诊断的敏感度、特异性、准确性分别为97.；6%25(95%25CI；94