Journal article
Landmark-based augmented reality system for paranasal and transnasal endoscopic surgeries.
- Thoranaghatte R ARTORG Research Centre, University of Bern, Stauffacherstrasse 78, Bern, Switzerland. rameshtu@yahoo.com
- Garcia J
- Caversaccio M
- Widmer D
- Gonzalez Ballester MA
- Nolte LP
- Zheng G
- 2009-07-23
Published in:
- The international journal of medical robotics + computer assisted surgery : MRCAS. - 2009
Cadaver
Endoscopes
Endoscopy
Equipment Design
Equipment Failure Analysis
Image Enhancement
Image Interpretation, Computer-Assisted
Paranasal Sinuses
Reproducibility of Results
Robotics
Sensitivity and Specificity
Skull Base
Surgery, Computer-Assisted
Tomography, X-Ray Computed
User-Computer Interface
English
BACKGROUND
In this paper we present a landmark-based augmented reality (AR) endoscope system for endoscopic paranasal and transnasal surgeries along with fast and automatic calibration and registration procedures for the endoscope.
METHODS
Preoperatively the surgeon selects natural landmarks or can define new landmarks in CT volume. These landmarks are overlaid, after proper registration of preoperative CT to the patient, on the endoscopic video stream. The specified name of the landmark, along with selected colour and its distance from the endoscope tip, is also augmented. The endoscope optics are calibrated and registered by fast and automatic methods. Accuracy of the system is evaluated in a metallic grid and cadaver set-up.
RESULTS
Root mean square (RMS) error of the system is 0.8 mm in a controlled laboratory set-up (metallic grid) and was 2.25 mm during cadaver studies.
CONCLUSIONS
A novel landmark-based AR endoscope system is implemented and its accuracy is evaluated. Augmented landmarks will help the surgeon to orientate and navigate the surgical field. Studies prove the capability of the system for the proposed application. Further clinical studies are planned in near future.
In this paper we present a landmark-based augmented reality (AR) endoscope system for endoscopic paranasal and transnasal surgeries along with fast and automatic calibration and registration procedures for the endoscope.
METHODS
Preoperatively the surgeon selects natural landmarks or can define new landmarks in CT volume. These landmarks are overlaid, after proper registration of preoperative CT to the patient, on the endoscopic video stream. The specified name of the landmark, along with selected colour and its distance from the endoscope tip, is also augmented. The endoscope optics are calibrated and registered by fast and automatic methods. Accuracy of the system is evaluated in a metallic grid and cadaver set-up.
RESULTS
Root mean square (RMS) error of the system is 0.8 mm in a controlled laboratory set-up (metallic grid) and was 2.25 mm during cadaver studies.
CONCLUSIONS
A novel landmark-based AR endoscope system is implemented and its accuracy is evaluated. Augmented landmarks will help the surgeon to orientate and navigate the surgical field. Studies prove the capability of the system for the proposed application. Further clinical studies are planned in near future.
- Language
-
- English
- Open access status
- closed
- Identifiers
-
- DOI 10.1002/rcs.273
- PMID 19623600
- Persistent URL
- https://sonar.ch/global/documents/1206
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