Diagnosis of Intracranial Aneurysm with 64-slice CT Angiography

Objective:To evaluate the value of 64-slice CT angiography(MSCTA)in the diagnosis of intracranial aneurysm.Methods:18 patients with 18 intracranial aneurysms confirmed by DSA and surgery had MSCTA.The MSCTA data of these 18 patients were processed with maximum intensity projection(MIP),volume rendering(VR)and multiplanar reconstruction(MPR).DSA was performed in 5 cases and surgery was undertaken in 13 cases.Results:17 cerebral aneurysms were detected in these 18 patients by MSCTA,with aneurysm located at middle cerebral artery(n=7),anterior cerebral artery(n=6),posterior cerebral artery(n=2)and internal carotid artery(n=2).1 aneurysm located in left internal carotid artery was found by DSA,yet was missed by MSCTA.The diameter of aneurysm ranged from 3~20mm on MSCTA images.The location,size and shape of these 17 cerebral aneurysms showed on MSCTA were in accordance with the result of DSA and/or surgery.Conclusion:MSCTA can display clearly the location,size and shape of intra-cranial aneurysm as well as their relationship with the adjacent anatomic structures,which provide valuable information for surgery or interventional therapy.