A Microstereotactic Approach to Small CNS Lesions—Part Ⅰ Development of CT Localization and 3-D Reconstruction Techniques

　The authors describe a newly designed and utilized stereotactic methodology for the removal of central nervous system lesions as small as a few millimeters in diameter.s, These small lesions are detected and localized by non-invasive computerized axial tomography (GE 8800 scanner) with additional computer processing of the digital data by means of a PDP-1145 computer. Multiple computer algorithms have been developed to enhance regions of interest on CT scans by threedimensional reconstruction and magnification techniques. This same data can then be used to calculate a stereotactic approach to a small CNS lesion.