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Related Concept Videos

Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
Brain Imaging01:14

Brain Imaging

Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans),  magnetic resonance imaging (MRI),  functional magnetic resonance imaging (fMRI), and Transcranial Magnetic Stimulation (TMS).

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Related Experiment Video

Updated: Jul 13, 2026

Translational Brain Mapping at the University of Rochester Medical Center: Preserving the Mind Through Personalized Brain Mapping
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Functional neurosurgery in the MRI environment.

A A F De Salles1, L Frighetto, E Behnke

  • 1Division of Neurosurgery, School of Medicine, University of California-Los Angeles, 200 UCLA Medical Plaza Suite 504, Los Angeles, CA 90095-7182, USA. adesalles@mednetucla.edu

Minimally Invasive Neurosurgery : MIN
|December 4, 2004
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Summary

This study demonstrates that microelectrode recording and electrical stimulation are feasible during deep brain stimulation (DBS) and lesioning surgeries within an interventional MRI (iMRI) setting. The iMRI environment allows for electrode localization and placement confirmation during functional neurosurgery.

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Area of Science:

  • Neurosurgery
  • Medical Imaging
  • Electrophysiology

Background:

  • Functional neurosurgery, including deep brain stimulation (DBS) and lesioning, requires precise electrode placement.
  • Interventional magnetic resonance imaging (iMRI) offers real-time visualization during surgical procedures.
  • Integrating electrophysiological techniques with iMRI presents unique technical challenges.

Purpose of the Study:

  • To assess the feasibility of microelectrode recording, electrical stimulation, and electrode position verification within an iMRI environment.
  • To evaluate the safety and efficacy of these techniques during functional neurosurgical procedures.
  • To determine the utility of iMRI for guiding stereotactic interventions.

Main Methods:

  • Seventy-six functional neurosurgical procedures (54 DBS, 3 lesioning) were conducted in an open 0.2 T iMRI suite.
  • Electrophysiological studies, including microelectrode recordings and macrostimulation, were performed in 51 surgeries.
  • Intraoperative MRI was used for electrode position confirmation, often fused with pre-operative scans.

Main Results:

  • Microelectrode recordings were not significantly affected by MRI-related magnetic field noise.
  • Electrode position was confirmed intraoperatively, despite MRI artifacts from DBS hardware.
  • Two patients (2.6%) experienced symptomatic hemorrhage; overall image quality was sub-optimal but improved with image fusion.

Conclusions:

  • Conventional stereotactic localization, electrophysiological recordings, stimulation, DBS hardware implantation, and lesion placement are feasible in a 0.2 T iMRI setting.
  • The ability to visualize the brain during surgery is highly beneficial for stereotactic procedures.
  • iMRI provides a valuable tool for enhancing precision and safety in functional neurosurgery.