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Optimization of Microelectrode Recording in Deep Brain Stimulation Surgery Using Intraoperative Computed Tomography
Ryan B Kochanski1, Sander Bus2, Gian Pal2
1Department of Neurosurgery, Rush University Medical Center, Chicago, Illinois, USA.
World Neurosurgery
|April 15, 2017
Summary
Intraoperative CT extrapolation (iCTE) enhances deep brain stimulation accuracy by reducing microelectrode errors and operative time. This technique improves subthalamic nucleus targeting for Parkinson's disease patients.
Area of Science:
- Neurosurgery
- Medical Imaging
- Neurological Disorders
Background:
- Microelectrode recording (MER) is crucial for targeting accuracy in deep brain stimulation (DBS) surgery.
- Current methods face challenges in precise trajectory planning.
- Improving MER accuracy can enhance surgical outcomes.
Purpose of the Study:
- To evaluate the efficacy of intraoperative computed tomography (CT) extrapolation (iCTE) in improving microelectrode targeting accuracy during subthalamic nucleus (STN) deep brain stimulation (DBS).
- To assess the impact of iCTE on operative time, number of MER tracks, and recorded STN length.
- To determine if iCTE reduces targeting errors in STN DBS.
Main Methods:
- A retrospective comparison of STN DBS procedures before and after the implementation of iCTE.
- iCTE involves using intraoperative CT to extrapolate the guide tube trajectory to the target, allowing for pre-operative adjustments.
- Data collected included radial error, operative time, number of MER tracks, and recorded STN length.
Main Results:
- iCTE significantly reduced average radial MER track error (1.90 mm to 0.84 mm) and operative time (272 min to 233 min).
- The number of MER tracks per hemisphere decreased (2.24 to 1.75), with an increase in single-track localizations (29% to 43%).
- Average recorded STN length increased from 4.01 mm to 4.75 mm with iCTE.
Conclusions:
- iCTE is an effective technique for improving microelectrode accuracy in STN DBS.
- The method leads to increased first-pass recorded length of the STN and reduced operative time.
- Further research is warranted to evaluate the impact of iCTE on clinical outcomes and patient morbidity.