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Related Experiment Video

Updated: Jul 4, 2025

Intra-Operative Behavioral Tasks in Awake Humans Undergoing Deep Brain Stimulation Surgery
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Brain Shift during Staged Deep Brain Stimulation for Movement Disorders.

Keanu Chee1, Lisa Hirt1, Madelyn Mendlen1

  • 1Department of Neurosurgery, University of Colorado Anschutz Medical Campus School of Medicine, Aurora, Colorado, USA.

Stereotactic and Functional Neurosurgery
|January 29, 2024
PubMed
Summary
This summary is machine-generated.

Intracranial air accumulation from pneumocephalus did not significantly impact brain shift during deep brain stimulation surgery. Mean brain shift remained minimal (<1.0 mm) regardless of air presence, suggesting it may not be clinically significant.

Keywords:
Brain shiftDeep brain stimulationIntracranial airPneumocephalus

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Area of Science:

  • Neurosurgery
  • Neurology
  • Medical Imaging

Background:

  • Deep brain stimulation (DBS) is crucial for movement disorders like Parkinson's disease.
  • Accurate lead placement is vital for DBS efficacy.
  • Brain shift caused by pneumocephalus can reduce DBS accuracy.

Purpose of the Study:

  • To investigate the association between intracranial air (pneumocephalus) and brain shift during staged DBS surgery.
  • To determine if pneumocephalus affects stereotactic accuracy in DBS procedures.

Main Methods:

  • Retrospective analysis of 46 patients undergoing staged DBS for movement disorders.
  • CT imaging analyzed for intracranial air volume and electrode shift.
  • Pearson correlation and t-tests used to assess the relationship between air and shift.

Main Results:

  • Pneumocephalus was common after both electrode implantations.
  • Intracranial air after the first implantation correlated with ipsilateral brain shift (y-axis and Euclidean distance).
  • No significant correlation found after the second implantation, and no significant difference in shift between patients with and without pneumocephalus.

Conclusions:

  • Intracranial air accumulation, even up to 22.0 cm3, did not lead to clinically significant brain shift.
  • Mean brain shift was consistently <1.0 mm, irrespective of pneumocephalus presence.
  • Pneumocephalus may not be a significant factor for brain shift in DBS surgery.