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目的探讨应用三维造型软件建立脑动脉瘤虚拟三维模型的方法。方法分别对20例正常脑血管和216例脑动脉瘤的DSA资料进行分析整理,选取具有代表性的DSA资料作为蓝本,利用三维制作软件3D Studio MAX R3分别创建虚拟的脑动脉系统和动脉瘤模型。结果①虚拟脑动脉系统与DSA图像相比,在形态上具有相似性,在视觉上更容易理解血管的三维空间关系;能够在血管半透明的状态下显示虚拟的导丝、导管;通过将该虚拟模型文件复制成多个副本,稍加修改即可建立具有不同解剖变异的多个模型。②虚拟动脉瘤与DSA图像相比,能正确表现动脉瘤的发生部位、生长方向和形态特点;通过将该虚拟模型文件复制成多个副本,稍加修改即可建立发生部位、生长方向和形态各不相同的多个模型。结论由软件方法建立的脑动脉瘤虚拟三维模型能够逼真显示脑动脉系统和瘤体的三维空间关系,对于形态学研究和指导临床工作具有重要作用。
Objective To explore a method of establishing a virtual three-dimensional model of cerebral aneurysm using 3D modeling software. Methods The DSA data of 20 patients with normal cerebral vessels and 216 patients with cerebral aneurysms were analyzed and sorted out. The representative DSA data were selected as the blueprint. The virtual 3D cerebral arterial system and aneurysm model were created by using 3D Studio MAX R3 software. . Results ① Compared with the DSA images, the virtual cerebral arteries have similar morphological features and can visually understand the three-dimensional spatial relationship of the blood vessels. The virtual cerebral arteries can display virtual guidewires and catheters in the translucent state of the blood vessels. Copy the virtual model file into multiple copies, with a few modifications to create multiple models with different anatomical variations. ② Compared with the DSA images, the virtual aneurysm can correctly represent the aneurysm’s site of occurrence, growth direction and morphological characteristics. By copying the virtual model file into multiple copies, a slight modification can be made to establish the site of occurrence, the growth direction and the shape A number of different models. Conclusion The virtual three-dimensional model of cerebral aneurysm established by software method can vividly display the three-dimensional spatial relationship between the cerebral arterial system and the tumor, which plays an important role in morphological study and clinical guidance.