New stereoscopic virtual reality system application to cranial nerve microvascular decompression.

Area of Science:

• Neurosurgery
• Medical Simulation
• Virtual Reality Applications

Background:

• Microvascular decompression is a standard neurosurgical procedure for cranial nerve disorders.
• Current planning relies on traditional imaging and surgeon experience.

Purpose of the Study:

• To introduce and evaluate the Dextroscope, a virtual reality environment, for planning cranial nerve microvascular decompression.
• To assess the utility of VR simulation in optimizing surgical approach and implant placement.

Main Methods:

• Utilized the Dextroscope VR workstation for three cases of drug- and botulinum toxin-refractory hemifacial spasm.
• Developed interactive simulations for craniotomy, surgical approach, and Gore-Tex graft selection and positioning.
• Virtually planned the optimal size and placement of the Gore-Tex graft for facial nerve decompression.

Main Results:

• The 3D VR environment facilitated virtual craniotomy and visualization of neurovascular relationships.
• Optimal Gore-Tex graft size and position were simulated and selected for each patient.
• Surgical procedures successfully exposed facial nerve compressions and placed grafts as virtually planned, leading to excellent patient outcomes (average 2-grade improvement).

Conclusions:

• Virtual reality environments, such as the Dextroscope, can significantly aid neurosurgeons in planning and training for microvascular decompression.
• Key benefits include optimizing craniotomy, understanding complex neurovascular anatomy, and selecting ideal graft parameters.
• VR simulation enhances precision and potentially improves patient outcomes in these intricate procedures.