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目的:研究分析3D-CTA 应用于颅内动脉瘤诊断中的应用效果.方法:研究对象为2010年11月到2011年3月我院收治的颅内动脉瘤患者,患者取仰卧位,固定头部,经肘静脉使用高压注射器注入对比剂优维显370.扫描结束后,图像采用 Add / Sub 软件,联合多平面重建法(MPR),表面遮盖显示法(SSD),最大密度投影法(MIP)和容积重建法(VR)等处理方法,重建有骨结构和去骨的病灶三维立体图像.结果:51例患者共检出59例阳性动脉瘤,其中45例为单发动脉瘤,6例为多发动脉瘤(4例为2个动脉瘤,2例为3个动脉瘤).漏诊颈内动脉瘤1例,误诊小脑后动脉瘤1例,诊断灵敏性为98.3%,诊断特异性为98.3%,诊断准确性为96.7%.结论:3D-CTA 具有安全微创,更好显示血管瘤解剖结构的特点,但其还不能取代3D-DSA“,”Objective: To study analysis of 3D-CTA applied to the effect of the application in the diagnosis of intracranial aneurysms. Methods: The subjects were admitted to our hospital from November 2010 to March 2011, patients with intracranial aneurysms, the patient supine position, fixed head, cubital vein using high-pressure syringe injection of contrast agent Ultravist 370. After scanning, the images using the Add / Sub software, combined with multi-planar reconstruction (MPR), shaded surface display method (SSD), maximum intensity projection (MIP) and volume rendering method (VR) approach to reconstruction with bone structure the three-dimensional image of the lesions and boneless. Results: 51 patients were detected in 59 patients with positive aneurysms, of which 45 were for single aneurysm, six cases of multiple aneurysms ( 4 cases of two aneurysms, two cases of aneurysm 3). Missed neck within aneurysm cases, misdiagnosed cerebelar artery aneurysm, the diagnostic sensitivity of 98.3% and a diagnostic specificity of 98.3%, a diagnostic accuracy of 96.7%. Conclusion:3D-CTA security minimaly invasive, better hemangioma characteristics of the anatomical structure, but also can not be replaced by 3D-DSA