Accuracy of customized miniature stereotactic platforms

Area of Science:

• Neurosurgery
• Medical Devices
• Image-Guided Therapy

Background:

• Deep-brain stimulation (DBS) is a crucial treatment for neurological disorders.
• Accurate electrode placement is vital for DBS efficacy and patient safety.
• Existing implantation systems present challenges in precision and workflow.

Purpose of the Study:

• To evaluate the accuracy and feasibility of a new one-piece platform system for deep-brain stimulator implantation.
• To assess the system's performance in guiding electrode trajectories to specific brain targets.

Main Methods:

• A novel one-piece platform system was developed, customized from preoperative imaging for each trajectory.
• The platform was attached to skull-implanted posts, serving as a miniature stereotactic frame during surgery.
• Parallel cannulas were advanced through a burr hole to the target, guided by the platform.
• Accuracy was determined by comparing planned and actual electrode positions using postoperative CT scans.

Main Results:

• The system demonstrated a mean implantation error of 2.8 mm across 20 procedures.
• This error measure accounts for surgical inaccuracies, brain shift, and CT measurement variability.
• The achieved accuracy is favorable compared to existing deep-brain stimulator implantation methods.

Conclusions:

• The evaluated system offers a precise and effective method for deep-brain stimulator implantation.
• The one-piece platform design simplifies the surgical workflow while maintaining high accuracy.
• This technology holds promise for improving outcomes in patients undergoing deep-brain stimulation therapy.