Technical Description
The technology discloses a software method and system that improves the accuracy of X-ray (C-arm) guided surgical navigation, particularly in spine surgery. Instead of treating every reference marker on the imaging calibration device equally, it scores each marker's error through centroid-deviation or reprojection analysis. It then weights the markers and recalibrates the imaging device using only the most reliable ones. In testing this reduced calibration error by up to 8.36%, and phantom studies showed screw-tracking accuracy within 2 mm.
Problems Addressed
- Navigation Errors in Image-Guided Spine Surgery
- Equal Treatment of All Calibration Markers
- Marker Occlusion by Surgical Instruments
- Low Image Contrast and Air-Gap Artifacts
- Device-Induced C-Arm Image Distortion
- Manual, Fixed Calibration Workflows
Tech Features
- Per-Marker Error Scoring
- Centroid-Deviation Optimization
- Camera Projection Matrix (CPM) Reprojection Analysis
- Least-Squares Weight Optimization
- Threshold-Based Reliable Marker Selection
- Intrinsic & Extrinsic Parameter Recalibration
Target Audience
- Surgical Navigation System Manufacturers
- Surgical Robotics Companies
- C-Arm and Fluoroscopy Equipment OEMs
- Medical Imaging Software Developers
- Hospitals and Spine Surgery Centres
- Orthopaedic and Neurosurgical Device Companies
Tech ID: P24-2273 TRL 4 Patent Status: Published Available For Exclusive and Non-exclusive License
