Comparative Study of CTA and 3D-DSA in the Diagnosis of Intracranial Aneurysms

Objective:To evaluate the diagnostic value of CTA and 3D-DSA for intracranial aneurysms. Method:36 patients which were admitted under clinical symptoms and signs suggestive of harboring intracranial aneurysms were retrospectively analyzed.The sensitivity,specificity,accuracy in detecting the aneurysms,in demonstrating the neck of the aneurysms and relationship of parent artery were compared between CTA and 3D-DSA.Result:41 intracranial aneurysms were detected by CTA,the sensitivity,specificity and accuracy were 88.89%,100% and 80%,respectively.There were no significant differences in the sensitivity,specificity and accuracy between the CTA and 3D-DSA(P0.05).3D-DSA were significantly better than that of CTA in showing the detail of aneurysms and its neck. Conclusion:3D-DSA has more advantages in aneurysm display rate and the display of aneurismal neck,and it's better than CTA in diagnosis.