Goodman J H, Davis J R, Gabauer R A, Kanellitsas C
Ohio State University Hospital, Columbus.
Appl Neurophysiol. 1987;50(1-6):274-7. doi: 10.1159/000100725.
Stereotactic tumor biopsy and brachytherapy catheter implantation can be accomplished with targets derived from computed axial tomography and magnetic resonance scans. Computer manipulation of image data allows both diagnostic and therapeutic procedures to be carried out from a single set of scan slices. This eliminates the need for repeat scanning as part of the surgical procedure. Microcomputer technology is sufficiently advanced to handle the images and graphics necessary for stereotactic neurosurgery. A system based on the IBM PC/AT designed for this purpose uses readily available graphics software and custom-designed imaging programs. Direct loading of computed axial or magnetic resonance scan images from magnetic tape can be accomplished. Determination of points, contours and volumes in three-dimensional space allows intraoperative alignment of image data and patient landmarks within the stereotactic head frame using pattern recognition overlays. Three-axis scaling for magnification correction along with rotational and linear data transformations provide the basis for single-scan stereotaxis. Interactive computer graphics integrate image, patient and frame coordinates for target determination. This method eliminates the need to design and fabricate nonmagnetic or radiolucent scanner-compatible devices.
立体定向肿瘤活检和近距离治疗导管植入可以通过计算机断层扫描和磁共振扫描获取的靶点来完成。对图像数据进行计算机处理，使得诊断和治疗程序都能从一组扫描切片中进行。这消除了作为手术程序一部分进行重复扫描的必要性。微型计算机技术已经足够先进，能够处理立体定向神经外科所需的图像和图形。基于IBM PC/AT为此目的设计的系统使用现成的图形软件和定制设计的成像程序。可以直接从磁带上加载计算机断层扫描或磁共振扫描图像。在三维空间中确定点、轮廓和体积，允许使用模式识别叠加在立体定向头架内术中对齐图像数据和患者体表标志。用于放大校正的三轴缩放以及旋转和线性数据变换为单次扫描立体定向提供了基础。交互式计算机图形整合了图像、患者和框架坐标以确定靶点。这种方法无需设计和制造与扫描仪兼容的非磁性或射线可透过装置。
