title: Accuracy of MR-guided stereotactic electrode implantation. 1. Preimplantation correlation with the Talairach system.
abstract: The accuracy of stereotactic electrode implantation using MR guidance and a computerized imaging system was compared to the conventional Talairach system, using ventriculography and a stereotactic atlas. A combined methodology of two stereotactic approaches was used, with a modified Leksell and a Todd-Wells frame. The coordinates of temporo-limbic structures and the length of the AC-PC line were measured prior to implantation in 10 epileptic patients undergoing the combined procedure. Relative differences in single and three-dimensional values were obtained for 68 targets within the temporal lobe. Lengths of AC-PC lines were measured in 9 patients. Statistical differences were found for all temporal coordinates, but the AC-PC line did not differ significantly.
authors.affiliation: Division of Neurosurgery, UCLA School of Medicine 90042.
authors.forename: M F
authors.initials: MF
authors.lastname: Lévesque
authors.forename: C L
authors.initials: CL
authors.lastname: Wilson
authors.forename: E J
authors.initials: EJ
authors.lastname: Behnke
authors.forename: J X
authors.initials: JX
authors.lastname: Zhang
mesh_terms: D001931:Brain Mapping / Q000295:instrumentation; D004567:Electrodes, Implanted; D004569:Electroencephalography / Q000295:instrumentation*; D004833:Epilepsy, Temporal Lobe / Q000503:physiopathology* / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000295:instrumentation*; D008905:Minicomputers; D011612:Psychosurgery; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013238:Stereotaxic Techniques / Q000295:instrumentation*; D013702:Temporal Lobe / Q000503:physiopathology / Q000601:surgery