Comparison of CT-versus MRI-guided, computer-assisted depth electrode implantation

J. R. Smith, T. L. Hardy, D. F. Rose, H. F. Flanigin, D. W. King, B. B. Gallagher, A. M. Murro, A. Fifer

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


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 > 90% improved at 1 year follow-up. In the MRI group, 8 (80%) were seizure-free and 9 (90%) were > 90% improved at latest follow-up.

Original languageEnglish (US)
Pages (from-to)189-193
Number of pages5
JournalStereotactic and Functional Neurosurgery
Issue number1-4
StatePublished - 1992


  • Depth electrodes
  • Image-guided, computer-assisted stereotactic implantation
  • Magnetoencephalography
  • Seizure focus localization

ASJC Scopus subject areas

  • Surgery
  • Clinical Neurology


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