Spiral CT Three-dimensional Angiography In The Preoperative Evaluation Of Skull Base Meningiomas Clinical Research

Objective: To study spiral CT angiography in the skull base meningioma andvascular preoperative surgical plan for clinical help. Methods:2010-2012Branchsurgery before the diagnosis of skull base meningioma and hospitalization treated bysurgery; the pathological diagnosis and preoperative patients consistent with40cases.18cases: male patients, female patients of22cases; age19-76years, mean age50.3years.Experts in the week before surgery to head3D-CTA and MRI; the use of spiralCT angiography and total cerebral angiography (DSA). Check to compare the tumorvascular supply. Surgeon in the preoperative reading3D-CTA and DSA, combined withMRI imaging,surgical planning. Results:1. Comparison of3D-CTA and DSA: tumorBlood supply. The performance of both the test line test,χ~2=0.841， P＞0.05=0.841; both no significant difference.2. The tumor’s blood supply: a simple internalcarotid artery in10cases, simply the external carotid artery of22cases, internalcarotid, external carotid mixed blood supply to the eight cases.3. Around the tumor bloodvessels: Preoperative CTA evidence of the erosion of large blood vessels to the tumor,10cases, intraoperative see the tumor cells and vascular adhesion, the tumor can not beisolated and vascular. The preoperative found30case of tumor pushing vascularsurgery in blood vessels isolated from the tumor, total resection of the tumor.4. Sinus Display:3D-CTV to check this group, threecases of tentorial meningiomasurgery before,1/3of the patients before urgery show sagittal sinus occlusion,showing compensatory expansion of the draining veins around, surgery seenin preoperative examination findings consistent and actively take measurespostoperative recovery.5. Skull erosion: this group skull violations of the nine cases, consistent with the intraoperative findings; total or subtotal for intraoperative tumor,postoperative recovery. Conclusion:3D-CTA can display three dimensional structure ofthe skull base meningioma, showing blood vessels, but also the preoperative choice ofsurgical approach and program development, and increase the safety of surgery.3D-CTAshould be applied in the preoperative treatment plan.