Clinical Scorecard: Evaluating the Role of Augmented Reality Visualization in Brain Lesions: A Prospective Randomized Controlled Study on Its Benefits and Current Challenges in Navigated Microneurosurgery

At a Glance

Key Highlights

• AR visualization integrates real-time surgical site view with digital overlays of anatomical and functional imaging data to aid surgical navigation.
• Navigated operating microscope with HUD-based AR is the most accessible AR modality in neurosurgery, supporting planning and intraoperative decision-making.
• Challenges include registration accuracy limitations and visualization quality, which affect broader clinical adoption and impact on surgical outcomes.

Guideline-Based Recommendations

Diagnosis

• Use routine preoperative imaging including MRI, diffusion tensor imaging, and navigated transcranial magnetic stimulation for surgical planning and AR data integration.

Management

• Employ navigated operating microscope with AR overlays to visualize tumor borders, functional hotspots, and critical tracts intraoperatively.
• Surgeons should undergo structured training in HUD control and microscope navigation prior to AR-guided procedures.

Monitoring & Follow-up

• Document intraoperative AR use via microscope video recordings and direct observation using standardized checklists to assess visualization quality and workflow impact.

Risks

• Be aware of potential cognitive overload from excessive visual information during surgery.
• Consider limitations in registration accuracy and visualization quality that may affect surgical decision-making.

Patient & Prescribing Data

Patients undergoing brain tumor or vascular lesion surgery with navigated microneurosurgery

AR visualization may reduce surgical risk and cognitive load by providing detailed, context-specific imaging overlays, though definitive impact on outcomes remains to be established.

Clinical Best Practices

• Integrate preoperative imaging data (MRI, DTI, nTMS) into surgical planning software for AR visualization.
• Perform surgeon-led segmentation of tumors and anatomical structures on day of surgery to ensure accuracy.
• Use preset HUD views including volume overlays and picture-in-picture navigation in axial, coronal, and sagittal planes.
• Combine AR visualization with conventional neuronavigation to optimize intraoperative guidance.
• Conduct structured surgeon training in AR system operation to maximize usability and safety.

References

• Brainlab AG software and hardware used in AR neurosurgery
• Carl Zeiss Meditec AG surgical microscopes