Abstract：Objective: To evaluate the diagnostic and clinical application value of 16-slice three dimensional CT angiography(3D-MSCTA) with volume reconstruction(VR) technique in intracranial aneurysms. Methods: 3D-MSCTA of 36 patients clinically suspected intracranial aneurysms were analysed restrospectively. Source images were got by GE Light Speed pro Scanner. The images of 36 patients were processed with VR and maximum intensity projection(MIP). Results: Thirty-nine intracranial aneurysms in 36 patients (3 patients had 2 aneurysms) were found by 3D-MSCTA, the location of aneurysms was in the anterior cerebral artery in 3, in the anterior communicating artery in 11, in the internal carotid artery in 5, in the middle cerebral artery in 9, in the posterior communicating artery in 9, in the cerebral basal arterial circle in 1, and in the vertebral artery in 1. DSA displayed 19 intracranial aneurysms in 18 patients(1 patient had 2 aneurysms), 2 aneurysms were verified by surgery in 2 patients. There was no significant difference between VR and DSA in size ranging of intracranial ameurysms(t=0.59, P>0.05). The position, size and width of the neck of intracranial aneurysms in 18 patients displayed by 3D-MSCTA were accordant with the results of DSA. Conclusion: 3D-MSCTA VR can display intracranial aneurysms clearly, and provide valuable information for surgery or interventional therapy. 3D-MSCTA VR is a very quick, economical and effective method in the diagnosis of intracranial aneurysms.
2006, Vol. 17 
