Feasibility of tracked electrodes for use in epilepsy surgery

David R. Holmes III, Benjamin Brinkmann, Dennis Hanson, Gregory Alan Worrell, Richard Robb, Leslie Holton

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Subdural electrode recording is commonly used to evaluate intractable epilepsy. In order to accurately record electrical activity responsible for seizure, electrodes must be positioned precisely near targets of interest, often indicated preoperatively through imaging studies. To achieve accurate placement, a large craniotomy is used to expose the brain surface. With the intent of limiting the size and improving the location of craniotomy for electrode placement, we examined magnetic tracking for localization of electrode strips. Commercially available electrode strips were attached to specialized magnetic tracking sensors developed by Medtronic plc. In a rigid phantom we evaluated the strips to determine the accuracy of electrode placement on targets. We further conducted an animal study to evaluate the impact of magnetic field interference during data collection. The measured distance between the physical fiducial and lead coil of the electrode strip was 1.32 ± 1.03mm in the phantom experiments. The tracking system induces a very strong signal in the electrodes in the Very Low Frequency, an International Telecommunication Union (ITU) designated frequency band, from 3 kHz to 30 kHz. The results of the animal experiment demonstrated both tracking feasibility and data collection.

Original languageEnglish (US)
Title of host publicationMedical Imaging 2016: Image-Guided Procedures, Robotic Interventions, and Modeling
PublisherSPIE
Volume9786
ISBN (Electronic)9781510600218
DOIs
StatePublished - 2016
EventMedical Imaging 2016: Image-Guided Procedures, Robotic Interventions, and Modeling - San Diego, United States
Duration: Feb 28 2016Mar 1 2016

Other

OtherMedical Imaging 2016: Image-Guided Procedures, Robotic Interventions, and Modeling
CountryUnited States
CitySan Diego
Period2/28/163/1/16

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Keywords

  • electrocorticography (ECoG)
  • electrode placement
  • electroencephalogram (EEG)
  • epilepsy
  • magnetic tracking
  • surgical navigation

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Radiology Nuclear Medicine and imaging

Cite this

Holmes III, D. R., Brinkmann, B., Hanson, D., Worrell, G. A., Robb, R., & Holton, L. (2016). Feasibility of tracked electrodes for use in epilepsy surgery. In Medical Imaging 2016: Image-Guided Procedures, Robotic Interventions, and Modeling (Vol. 9786). [97862M] SPIE. https://doi.org/10.1117/12.2217859