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Temperature changes in nickel-chromium intracranial depth electrodes during MR scanning
J Zhang1, C L Wilson, M F Levesque
1Brain Research Institute, UCLA 90024.
AJNR. American Journal of Neuroradiology
|March 1, 1993
Summary
Magnetic Resonance Imaging (MRI) scans are safe for patients with implanted nickel-chromium electrodes. Studies found no significant heating effects, confirming thermal safety for epilepsy patients undergoing intracranial procedures.
Area of Science:
- Neurosurgery
- Medical Imaging
- Biomaterials
Background:
- Intracranial electrodes are used in epilepsy surgery.
- Magnetic Resonance Imaging (MRI) is a common diagnostic tool.
- Concerns exist regarding potential heating of implanted devices during MRI.
Purpose of the Study:
- To assess the heating effects of 1.5-Tesla (T) MRI on nickel-chromium electrodes.
- To confirm the safety of MRI scanning for epilepsy patients with these implanted electrodes.
Main Methods:
- Experimental testing of nickel-chromium electrodes.
- Simulating 1.5-T MRI scanning conditions.
- Monitoring electrode temperature changes during scanning.
Main Results:
- No significant temperature increase was observed in the nickel-chromium electrodes.
- The electrodes demonstrated thermal stability under MRI conditions.
Conclusions:
- Nickel-chromium electrodes are thermally safe for MRI scanning.
- Patients with intracranial nickel-chromium electrodes can undergo MRI procedures without thermal risk.