title: Stereotactic software for the GE 8800 CT scanner.
abstract: A computer software program (Seapit) was developed for precise determination of intracranial targets identified by stereotactic computed tomography (CT). This program was added to the software of a GE 8800 CT scanner to perform the following operations: millimetre precise calculation and display of the rectilinear coordinates of a target identified on axial CT images; preplotting of phantom target trajectories on the CT images or electronic radiographs; calculation of probe angles required to achieve various trajectories; display of a coordinate scale on each CT image to allow direct target determination without mathematical calculations; calculation of the intercommissural plane for functional neurosurgery. In a series of 100 patients undergoing stereotactic surgery, the Seapit program proved to be a superior and accurate method of target coordinate calculation. Preview display on the CT images of 'phantom' probes significantly enhanced the safety of stereotactic intervention.
mesh_terms: D001706:Biopsy; D001921:Brain / Q000000981:diagnostic imaging / Q000601:surgery*; D004567:Electrodes, Implanted; D006801:Humans; D012984:Software; D013238:Stereotaxic Techniques / Q000295:instrumentation*; D013788:Thalamus / Q000601:surgery; D014057:Tomography, X-Ray Computed / Q000295:instrumentation*