Diagnostic value of MSCTA and 3D-TOF MRA for intracranial aneurysm

Objective:To investigate the value of multislice spiral computed tomography angiography(MSCTA) and three-dimensional time of fligt magnetic resornance angiography(3D-TOF MRA) in the diagnosis of intracranial aneurysm.Methods:Fifteen patients with intracranial aneurysm identified by selective digital subtraction angiography(DSA) or aneurysm clipping were examined using MSCTA or 3D-TOF MRA,and the clinical data were retrospectively analyzed.Results:Sixteen aneurysms in 15 patients included 7 aneurysms in ACoA,4 aneurysms in PCoA,2 aneurysms in right internal carotid artery and 3 aneurysms in MCA.Fifteen aneurysms were checked out by MSCTA and 3D-TOF MRA,one aneurysm in the left MCA was missed,the sensitivity of which was 93.75%.MSCTA and 3D-TOF MRA could better display the morphology,size,location and neck of aneurysm,and the relationship between tumor and skull base.Tumor sizes of 13 cases detected by MSCTA or 3D-TOF MRA were coincidence to the results of DSA and operation.Tumor size of 1 case detected by MSCTA and 1 case detected by 3D-TOF MRA were not coincidence to the results of DSA.Tumor morphology of 12 cases detected by MSCTA and 3 cases detected by 3D-TOF MRA were similar to the results of DSA and operation.Conclusions:MSCTA and 3D-TOF MRA can accurately identified the intracranial aneurysm,which can used as a routine metheod in early screening of intracranial aneurysms in high risk population.