16层螺旋CT血管造影在松果体区脑膜瘤术前应用价值探讨

目的:通过16层螺旋CT血管成像在松果体区脑膜瘤术前的应用,探讨CT血管成像在手术切除松果体区肿瘤中的应用价值。方法:对6例松果体区脑膜瘤患者手术前进行CTA检查,采用横断面图像重建、多平面重建(MPR)。曲面重建技术(CPR)、最大密度投影重建(M IP)、表面遮盖法重建(SSD)、容积显示重建(VR)等技术,最终显示肿瘤与Galen′s静脉系统的位置关系,通过造影结果对肿瘤切除行术前评估。结果:CTA的诊断结果被手术证实。CTA准确地显示了肿瘤的部位、大小、血管组成、血管轮廓的详细三维结构,以及肿瘤对Galen′s静脉系统的压迫情况和相互位置关系。结论:CTA具有简单、快速、无创和可靠等优点,尤其适合于血供丰富的脑深部肿瘤术前评估,有助于手术入路的设计,减少术中血管不必要损伤并降低手术危险,真正达到微创切除肿瘤的目的。

Exploration of preoperative value of 16-slice spiral computed tomography angiography in pineal region meningioma

Objective By the adoption of 16-slice CT angiography technique,to evaluate the preoperative value of subtraction CT angiography in pineal region meningioma.MethodIn 6 cases of pineal region meningioma,multislice-CTA was carried out preoperatively.The multislice-CTA images were reconstructed by multitude plane reconstruction(MPR),curved plane reconstruction(CPR),maximum intensity projection(MIP),shaded surface display(SSD),and volume rendering(VR) methods,showed the relationship of the tumor with Galen′s vein system,preoperative evaluation by the results of multislice-CTA.ResultsThe diagnosis of multislice-CTA was confirmed by surgery.Multislice-CTA not only demonstrated the site,size,vascular component,and 3D contour of the tumors,but also clearly displayed the 3D spatial relationship of the tumor with Galen′s vein system.ConclusionCTA has simple,fast scanning speed,non-invasion,high safety aspects,accuracy property,and other advantages,especially preoperative evaluation for the rich blood supply in the deep brain tumor and could aid to planning the neurosurgical approach,achieving the purpose of minimally invasive tumor resection.