A Low-Cost Mobile-Based Augmented Reality Neuronavigation System for Retrosigmoid Craniotomy.

Area of Science:

• Neurosurgery
• Medical Technology
• Surgical Navigation

Background:

• Accurate transverse-sigmoid sinus junction (TSSJ) positioning is critical for retrosigmoid craniotomy (RC) success.
• Complications can arise from incorrect TSSJ localization during RC.
• Augmented reality (AR) offers potential for cost-effective surgical guidance.

Purpose of the Study:

• To evaluate the clinical application of a novel mobile augmented reality navigation system (MARNS) for TSSJ positioning.
• To assess the feasibility and accuracy of MARNS in guiding retrosigmoid craniotomy (RC).

Main Methods:

• An observational study involving seven patients undergoing RC.
• MARNS was used to locate the TSSJ and guide surgical incision and drilling.
• Key metrics included matching error, positioning time, bone flap integrity, and complication rates.

Main Results:

• The MARNS demonstrated a mean matching error of 2.88 ± 0.69 mm.
• Average positioning time was 279.71 ± 27.29 seconds.
• TSSJ was precisely identified in all cases with an average bone flap integrity of 86.7%.

Conclusions:

• MARNS is effective for precise TSSJ placement during RC.
• The system offers convenience, cost-effectiveness, and reliability for neurosurgical navigation.
• This technology shows promise for improving outcomes in complex cranial surgeries.