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 language | English (US) |
|---|---|
| Title of host publication | Medical Imaging 2016: Image-Guided Procedures, Robotic Interventions, and Modeling |
| Publisher | SPIE |
| Volume | 9786 |
| ISBN (Electronic) | 9781510600218 |
| DOIs | |
| State | Published - 2016 |
| Event | Medical Imaging 2016: Image-Guided Procedures, Robotic Interventions, and Modeling - San Diego, United States Duration: Feb 28 2016 → Mar 1 2016 |
Other
| Other | Medical Imaging 2016: Image-Guided Procedures, Robotic Interventions, and Modeling |
|---|---|
| Country | United States |
| City | San Diego |
| Period | 2/28/16 → 3/1/16 |
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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
Feasibility of tracked electrodes for use in epilepsy surgery. / Holmes III, David R.; Brinkmann, Benjamin; Hanson, Dennis; Worrell, Gregory Alan; Robb, Richard; Holton, Leslie.
Medical Imaging 2016: Image-Guided Procedures, Robotic Interventions, and Modeling. Vol. 9786 SPIE, 2016. 97862M.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Feasibility of tracked electrodes for use in epilepsy surgery
AU - Holmes III, David R.
AU - Brinkmann, Benjamin
AU - Hanson, Dennis
AU - Worrell, Gregory Alan
AU - Robb, Richard
AU - Holton, Leslie
PY - 2016
Y1 - 2016
N2 - 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.
AB - 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.
KW - electrocorticography (ECoG)
KW - electrode placement
KW - electroencephalogram (EEG)
KW - epilepsy
KW - magnetic tracking
KW - surgical navigation
UR - http://www.scopus.com/inward/record.url?scp=84982176822&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84982176822&partnerID=8YFLogxK
U2 - 10.1117/12.2217859
DO - 10.1117/12.2217859
M3 - Conference contribution
AN - SCOPUS:84982176822
VL - 9786
BT - Medical Imaging 2016: Image-Guided Procedures, Robotic Interventions, and Modeling
PB - SPIE
ER -