A role of diffusion tensor imaging in movement disorder surgery

Area of Science:

• Neurosurgery
• Neuroimaging
• Computational Neuroscience

Background:

• Deep brain stimulation (DBS) is a common neurosurgical procedure for movement disorders.
• Optimizing DBS requires a detailed understanding of individual patient neuroanatomy.
• Intraoperative imaging and advanced visualization techniques are crucial for surgical precision.

Observation:

• Fiber tractography was performed on three patients undergoing stereotactic surgery for movement disorders using intraoperative MRI.
• Preoperative MRI data was analyzed using the Schaltenbrand-Wahren atlas and BrainLab iPlan software to define stereotactic targets.
• Diffusion tensor imaging (DTI) parameters, including region of interest size and fractional anisotropy, were systematically varied.

Findings:

• DTI tractography enabled reliable visualization and correlation of neural pathways, including corticospinal and corticopontocerebellar tracts.
• An enlarged region of interest in DTI tractography correlated with an increased number of targeted cortical regions.
• This suggests a potential mechanism for the dose-dependent effects and side effects observed in DBS.

Implications:

• Current DTI techniques offer a method to characterize the effects and side effects of DBS.
• This technology holds significant potential for optimizing DBS neurosurgery and improving patient outcomes.
• Personalized neurosurgical approaches can be enhanced through advanced neuroimaging and computational analysis.