Value Of Multislice Spiral Three-dimensional Computer Tomography Angiography In Preoperative Evaluation Of Meningioma

Objective : Discuss value of multislice spiral three-dimensional computer tomography angiography in preoperative evaluation of meningioma. Materials and Method: Forty two patients(male 18, female 24) with meningiomas were examined with preoperative 3D-CTA. They were examined within one week before operation , MRI were examined too in order to compare with 3D-CT.The technique of volume rendering (VR), multiplanner reconstraction (MPR), shade surface display(SSD) ,max intensity projection (MIP),were used to reconstruct the 3D images in all cases and simulate the approach of operation.Result:1,3D-CTA shared the same preoperative diagnostic accuracy to MRI(P>0.05).2,3D-CTA showed the main vessels of the meningiomas clearly and precisely.3,3D-CTA clearly displayed the 3D spatial relationship between the lesions and neighboring vascular.4,3D-CTA could disclose the main venous sinus with accuracy.5,3D-CTA showed the degree of skulls'erosion clearly.6,3D-CTA simulated the approach of operation, make the operation in security. Conclusion:Multislice spiral three-dimensional computer tomography angiography not only demonstrated the tumor's size, main vessel, but also lesions, neighboring vascular and skull structures clearly, directly and spatially. Three-dimensional computer tomography angiography could simulated the approach of operation, and make the operation in security. So that, multislice spiral three-dimensional computer tomography angiography is an important target in preoperative evaluation of meningioma.