Gildenberg P L, Labuz J
Houston Stereotactic Center, Tex., USA.
Stereotact Funct Neurosurg. 1997;68(1-4 Pt 1):64-71. doi: 10.1159/000099905.
A three-dimensional computer graphic program has been developed to guide the surgeon through the resection of a brain tumor. It consists of a video camera mounted on a stereotactic frame which visualizes the operative field in real time. Superimposed on the video monitor is a computer generated model of the tumor or other resection target mass. The mass can be displayed in several modes. The computer image of the mass is adjusted to correspond to the surgeon's eye view, with appropriate settings for the stereotactic apparatus indicated. Prior to incision, the image of the mass is superimposed on the scalp to guide placement and size of the scalp and bone flaps. As the resection proceeds, a cross-section of the mass is illustrated on the video picture of the operative field. The distance from the camera to the surface is measured, and the cross-section at that depth is displayed. A small window indicates the surgeon's eye view and the tangential view of the mass with an indication of the cross-section currently being displayed. As resection proceeds, the distance to the bottom of the resection cavity is measured repeatedly. The image is updated to indicate only that level of the tumor under resection. As the far side of the tumor is encountered, the mass disappears from the monitor, signaling completion of the resection.
已开发出一种三维计算机图形程序，用于在脑肿瘤切除手术中指导外科医生。它由安装在立体定向框架上的摄像机组成，可实时显示手术视野。视频监视器上叠加着计算机生成的肿瘤或其他切除目标肿块的模型。该肿块可以以多种模式显示。肿块的计算机图像会进行调整，以与外科医生的视角相对应，并显示立体定向设备的适当设置。在切开之前，肿块的图像会叠加在头皮上，以指导头皮和骨瓣的放置及大小。随着切除过程的进行，肿块的横截面会显示在手术视野的视频画面上。测量摄像机到表面的距离，并显示该深度处的横截面。一个小窗口显示外科医生的视角以及肿块的切线视图，并标明当前正在显示的横截面。随着切除的进行，会反复测量到切除腔底部的距离。图像会更新，仅显示正在切除的肿瘤的该层面。当遇到肿瘤的远侧时，肿块会从监视器上消失，表明切除完成。
