COMPUTERIZED TOMOGRAPHY COMPUTER GRAPHICS APPROACH TO STEREOTAXIC LOCALIZATION
COMPUTERIZED TOMOGRAPHY COMPUTER GRAPHICS APPROACH TO STEREOTAXIC LOCALIZATION
复制标题
DOI：
10.3171/jns.1979.50.6.0715
复制
发表时间：
1979-01-01
影响因子：
4.1
通讯作者：
BROWN, RA
中科院分区：
文献类型：
--
作者：
BROWN, RA
使用三维计算机图形显示计算机断层扫描（CT）扫描中可见的结构，并准确地确定最佳的立体定位探头相对于这些结构的位置进行了说明。设计用于CT身体扫描仪的原型有机玻璃立体定位框架与由代表直径为6-19 mm的颅内肿瘤的小有机玻璃球体组成的体模配合。从系列中的每次扫描中提取球体的边缘轮廓。通过显示所有CT扫描的球体轮廓，获得球体的三维视觉表示。在实际手术前，使用几个模拟刻度盘交互调整立体定位框架的叠加视觉模拟，以模拟轨迹选择和探针深度。然后将由图形计算机计算的框架设置和探针深度应用于实际原型框架，以评估这种组合的CT-计算机图形方法的立体定位的准确性。22个这样的实验结果和未来的临床使用这种新的和prescise定位技术的影响进行了讨论。
The use of 3-dimensional computer graphics to display structures visible in computerized tomography (CT) scans and to accurately determine optimum stereotaxic probe placement relative to those structures was described. A prototype lucite stereotaxic frame designed for use in CT body scanners was fitted with a phantom consisting of small lucite spheres representing intracranial tumors with diameters of 6-19 mm. A series of CT scans was obtained of the frame and phantom together. Edge outlines of the spheres were extracted from each scan in the series. A 3-dimensional visual representation of the spheres was obtained by displaying their outlines from all CT scans. A superimposed visual simulation of the stereotaxic frame was adjusted interactively using several analog dials to simulate trajectory choice and probe depth before actual surgery. The frame settings and probe depth calculated by the graphical computer were then applied to the actual prototype frame to assess the accuracy of this combined CT-computer graphics approach to stereotaxic localization. The results of 22 such experiments and the implications for future clinical use of this new and prescise localization technique are discussed.