Accuracy of MR-guided stereotactic electrode implantation. 1. Preimplantation correlation with the Talairach system.
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.
Lévesque
M F
MF
Division of Neurosurgery, UCLA School of Medicine 90042.
Wilson
C L
CL
Behnke
E J
EJ
Zhang
J X
JX
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