Technical Validation of a Spatial Tracking Configuration for Augmented and Co-Localized Medical Assistance Under...

Area of Science:

• Space Medicine
• Human-Computer Interaction
• Medical Technology

Background:

• Augmented reality (AR) offers enhanced remote medical assistance through colocalization, projecting virtual aid into the real world.
• Colocalization in AR has not been previously validated in the unique environment of parabolic flights.
• This study investigated AR's feasibility and effectiveness for simulated medical emergencies in weightlessness.

Purpose of the Study:

• To assess the technical feasibility of colocalized augmented reality in microgravity.
• To compare the efficacy of AR assistance versus traditional paper checklists during a simulated medical emergency.
• To evaluate the potential of AR for improving remote medical support in space.

Main Methods:

• A simulated abdominal pain scenario was conducted during parabolic flights.
• Participants used either a paper checklist or an AR device for procedural assistance.
• The study compared the performance and technical stability of the AR system under varying gravity conditions.

Main Results:

• Initial technical difficulties with AR headsets were encountered due to gravity variations affecting accelerometers.
• Clinical data interpretation was limited by a small sample size resulting from technical issues.
• A stable spatial tracking configuration for AR was successfully established by the final flight.

Conclusions:

• The study successfully demonstrated stable colocalized augmented reality assistance under varying gravity conditions for the first time.
• An external infrared camera tracking system and in-flight calibration were crucial for AR's spatial mapping independent of gravity.
• Further clinical validation is necessary to confirm the benefits of colocalized AR for space medicine.