Further Validity Evidence for Patient-Specific Virtual Reality Temporal Bone Surgical Simulation.

Area of Science:

• Neurosurgery
• Medical Simulation
• Otolaryngology

Background:

• Patient-specific virtual reality (VR) simulation offers potential for preoperative rehearsal in cochlear implant (CI) surgery.
• Validating VR simulation accuracy against actual surgical outcomes is crucial for clinical implementation.

Purpose of the Study:

• To gather validity evidence for patient-specific VR simulation of CI surgery.
• To compare virtual surgical performance with postoperative imaging data and expert assessment.

Main Methods:

• A prospective, multi-institutional study analyzed pre- and postoperative CT scans for VR simulation.
• Trainees and attendings performed virtual CI surgeries, with performance compared to actual drilled volumes and CISAT scores.

Main Results:

• Attendings drilled volumes closer to postoperative imaging for cochleostomy, while trainees drilled more in other areas.
• Trainees achieved higher CISAT scores than attendings, potentially due to visual cue differences in VR.
• Differences in virtual performance between trainees and attendings were observed.

Conclusions:

• Patient-specific VR simulation of CI surgery reveals distinct performance patterns between trainees and attendings.
• The volume comparison method provides a novel approach for validating VR simulation in temporal bone surgery.
• Further validation is needed before widespread clinical adoption for preoperative rehearsal.