Comparison of CT- versus MRI-guided, computer-assisted depth electrode implantation.
Fourteen candidates for ablative seizure surgery underwent CT-guided, computer-assisted stereotactic depth electrode implantation and 21 underwent MRI-guided, computer-assisted implantation. A hand-held computer with no graphic capability was used for CT-guided procedures. A computer work station which included a high-resolution color graphics terminal with touchscreen interfacing and software capable of simulating targets and trajectories in single or multiple views was used for MRI-guided procedures. Previous phantom studies done with a 1.5-tesla MR scanner suggested acceptable localization error. Localizing information was obtained in 10 (71.4%) of 14 of the CT-guided implants and in 16 (76.2%) of 21 of MRI-guided cases. In the CT group, 7 (70%) were seizure-free and 8 (80%) were greater than 90% improved at 1 year follow-up. In the MRI group, 8 (80%) were seizure-free and 9 (90%) were greater than 90% improved at latest follow-up.
Smith
J R
JR
Section of Neurosurgery, Medical College of Georgia, Augusta.
Hardy
T L
TL
Rose
D F
DF
Flanigin
H F
HF
King
D W
DW
Gallagher
B B
BB
Murro
A M
AM
Fifer
A
A
D003196:Computer Graphics; D004827:Epilepsy / Q000175:diagnosis / Q000503:physiopathology* / Q000601:surgery*; D005500:Follow-Up Studies; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D015225:Magnetoencephalography; D012189:Retrospective Studies; D013238:Stereotaxic Techniques; D013702:Temporal Lobe / Q000033:anatomy & histology / Q000473:pathology / Q000601:surgery; D014057:Tomography, X-Ray Computed / Q000379:methods*