Transforming electrocortical mapping data into standardized common space

Eva Katharina Ritzl, A. M. Wohlschlaeger, Nathan E Crone, A. Wohlschlaeger, L. Gingis, C. W. Bowers, Dana F Boatman

Research output: Contribution to journalArticle

Abstract

Subdural grid electrodes are implanted routinely for the pre-surgical work up of epilepsy. While different approaches are available, many centers, including ours, visualize electrode locations by co-registering pre-operative 3-D MR images with post-implantation 3-D CT images. This method allows the determination of the electrode positions in relation to the individual patient's anatomy, but does not easily allow comparison across patients. The goal of this study was to develop and validate a method for transforming electrode positions derived from 3-D CT images into standardized space. We analyzed data from twelve patients with subdurally implanted electrodes. Volumetric CT and MRI images were co-registered and then normalized into common stereotactic space. Electrode locations were verified statistically by comparing distances between the anterior commissure and a representative sampling of 8 electrode sites per patient. Results confirm the accuracy of our co-registration method for comparing electrode locations across patients.

Original languageEnglish (US)
Pages (from-to)132-136
Number of pages5
JournalClinical EEG and Neuroscience
Volume38
Issue number3
StatePublished - Jul 2007

Fingerprint

Electrodes
Three-Dimensional Imaging
Implanted Electrodes
Cone-Beam Computed Tomography
Epilepsy
Anatomy

Keywords

  • 3-D CT
  • 3-D MRI
  • Epilepsy surgery
  • Imaging
  • Montreal neurological institute space
  • SPM2
  • Subdural grid electrodes
  • Talairach atlas

ASJC Scopus subject areas

  • Clinical Neurology

Cite this

Ritzl, E. K., Wohlschlaeger, A. M., Crone, N. E., Wohlschlaeger, A., Gingis, L., Bowers, C. W., & Boatman, D. F. (2007). Transforming electrocortical mapping data into standardized common space. Clinical EEG and Neuroscience, 38(3), 132-136.

Transforming electrocortical mapping data into standardized common space. / Ritzl, Eva Katharina; Wohlschlaeger, A. M.; Crone, Nathan E; Wohlschlaeger, A.; Gingis, L.; Bowers, C. W.; Boatman, Dana F.

In: Clinical EEG and Neuroscience, Vol. 38, No. 3, 07.2007, p. 132-136.

Research output: Contribution to journalArticle

Ritzl, EK, Wohlschlaeger, AM, Crone, NE, Wohlschlaeger, A, Gingis, L, Bowers, CW & Boatman, DF 2007, 'Transforming electrocortical mapping data into standardized common space', Clinical EEG and Neuroscience, vol. 38, no. 3, pp. 132-136.
Ritzl EK, Wohlschlaeger AM, Crone NE, Wohlschlaeger A, Gingis L, Bowers CW et al. Transforming electrocortical mapping data into standardized common space. Clinical EEG and Neuroscience. 2007 Jul;38(3):132-136.
Ritzl, Eva Katharina ; Wohlschlaeger, A. M. ; Crone, Nathan E ; Wohlschlaeger, A. ; Gingis, L. ; Bowers, C. W. ; Boatman, Dana F. / Transforming electrocortical mapping data into standardized common space. In: Clinical EEG and Neuroscience. 2007 ; Vol. 38, No. 3. pp. 132-136.
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