Development of Database for Brain Structure and Neurosurgical Operation using Three Dimensional Digitizer

为简化计算机断层扫描（CT）引导的立体定向神经外科手术，发明了一种新的系统。该系统由多关节三维数字化仪和微机组成。术前行CT检查，在鼻窦和双耳放置3个标准制造器。手术时，系统通过对标准点采样得到患者头部的固定角度后，将数字化仪尖端的位置转换到计算机显示器上显示的CT图像上。该系统有一个独特的特点，可以通过开颅手术将CT引导的立体定位思想引入到传统的神经外科手术中，这是迄今为止开发的CT引导的立体定位方法所无法实现的，并且操作员能够根据存储在软盘中的大脑数据库了解他现在的操作位置。该系统对提高神经外科手术质量具有重要意义。

A new system was invented as the simplification for computer tomography (CT) guided stereotaxic neurosurgery. The system is composed of multi-joint three dimensional digitizer and microcomputer. CT was performed preoperatively with three standard makers placed on nasion and bilateral ears. At surgery, after getting the fixation angle of the head of the patients by sampling the standard points, the system translated the position of the tip of the digitizer onto the CT images displayed on computer display. This system have an unique feature that allows introducing the idea of CT guided stereotaxis into the conventional neurosurgery through a craniotomy which could not be achieved hitherto developed CT-guided stereotaxic apprati and operator is able to know where he is operating now referring brain database stored in a floppy disk. This system was very useful to improve the neurosurgical operations.