Hands-Free System for Bronchoscopy Planning and Guidance.

Area of Science:

• Medical Imaging
• Interventional Pulmonology
• Medical Device Technology

Background:

• Bronchoscopy is crucial for lung-cancer staging but suffers from variable physician performance.
• Current image-guided intervention (IGI) systems using virtual bronchoscopic navigation (VBN) often require technician assistance, limiting physician control and system adoption.
• There is a need for improved, physician-centric IGI systems to enhance bronchoscopy procedures.

Purpose of the Study:

• To develop and evaluate a hands-free virtual bronchoscopic navigation (VBN) system for planning and guiding bronchoscopy.
• To improve physician control and procedural efficiency in image-guided bronchoscopy.
• To assess the system's navigation success rate, guidance time, and user acceptability.

Main Methods:

• Development of a novel procedure-planning method for automatic airway navigation plan computation.
• Implementation of a foot-switch controlled guidance strategy with a position-verification mechanism for hands-free operation.
• Validation through phantom studies and a clinical human study, including an ergonomic assessment.

Main Results:

• Phantom studies demonstrated smooth operation, physician control, and faster navigation compared to technician-assisted VBN.
• Clinical study achieved a 97% bronchoscopy navigation success rate.
• Mean guidance time per diagnostic site was 52 seconds, significantly faster than reported times for technician-assisted VBN systems.

Conclusions:

• The proposed hands-free VBN system enhances physician control and efficiency in image-guided bronchoscopy.
• The system demonstrates high navigation success rates and reduced guidance times, offering a viable alternative to technician-assisted methods.
• Ergonomic evaluation suggests good physician acceptability and long-term potential for this technology in lung-cancer staging.