Related Experiment Videos
[Computer-assisted video-endoscopic endonasal surgery].
S Schmerber1, B Chen, S Lavallée
1Clinique ORL du CHU de Grenoble, BP 217, 38043 Grenoble Cedex 9.
Summary
This study introduces a non-invasive computer-assisted system (CAS) for safer endoscopic sinus surgery. The markerless system accurately guides surgeons, improving precision in critical areas.
Area of Science:
- Otolaryngology
- Medical Imaging
- Surgical Navigation
Context:
- Functional Endoscopic Sinus Surgery (FESS) often involves critical anatomical regions.
- Intra-operative navigation systems enhance surgical safety and precision.
- Markerless registration methods avoid additional imaging procedures.
Purpose:
- To describe and evaluate a non-invasive, markerless computer-assisted system (CAS) for intra-operative navigation in FESS.
- To assess the accuracy and reproducibility of the CAS using anatomical landmarks and an optical digitizing system.
- To determine the feasibility of using CAS in various endoscopic sinonasal procedures.
Summary:
- A markerless, skin surface-based registration method was employed, utilizing a patient's standard paranasal CT scan.
- Accuracy and calibration achieved were less than 1.5 mm in 89.2% of cases.
- The system demonstrated reliability in tracking patient head movements without significantly increasing operation duration.
Impact:
- CAS provides surgeons with a better understanding of complex paranasal sinus anatomy.
- The system is particularly beneficial for revision surgeries where anatomical landmarks may be obscured.
- Continued clinical studies aim to further refine the system for ENT surgery.