gms | German Medical Science

GMS Current Posters in Otorhinolaryngology - Head and Neck Surgery

German Society of Oto-Rhino-Laryngology, Head and Neck Surgery (DGHNOKHC)

ISSN 1865-1038

Experimental setting for measurement and correction of optical distortion of rigid endoscopic systems

Poster Endoskopie

  • corresponding author Savi Shishkov - Medical Univerity Varna "prof. Dr. Paraskev Stoyan", Varna, Bulgaria
  • Georgi Stoyanov - Medical Univerity Varna "prof. Dr. Paraskev Stoyan", Varna, Bulgaria
  • Nikolay Sapundzhiev - Division of Otorhinolaryngology, Department of Neurosurgery and Otorhinolaryngol, Varna, Bulgaria
  • Vilian Platikanov - Department of Anaesthesiology, Emergency, Intensive and Maritime Medicine, Medic, Varna, Bulgaria
  • Nikola Kolev - Department of General and Operative Surgery, Medical University Varna "Prof. Dr. Varna", Bulgaria
  • Kalin Mihov - Department of Orthopedics and Traumatology, Medical University- Varna "Prof. Dr. Varna", Bulgaria

GMS Curr Posters Otorhinolaryngol Head Neck Surg 2016;12:Doc040

doi: 10.3205/cpo001391, urn:nbn:de:0183-cpo0013918

Published: April 11, 2016

© 2016 Shishkov et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 License. See license information at http://creativecommons.org/licenses/by/4.0/.


Outline

Abstract

Aim: The endoscope armamentarium is a huge part of modern medicine. However, despite their wide applications, endoscopes are not without setbacks, the major one being image distortion caused by the nature of the lenses comprising the system. The aim of the current study is to present a methodology for recording and measuring the optical distortion of several clinically used endoscopes.

Materials and methods: A scaffold consisting of a vertical calibration grid two supports and fixating mechanisms was constructed for the aim of the study. Different rigid systems, used in a wide range of medical fields, were aimed at the calibration grid at the respected working angle and images were obtained with an endoscope compatible digital camera. The distortion of the images was later measured and corrected with an established post-procedural correction algorithm to visualize the difference.

Results: Comparison between the distortion of the different systems showed the rate at which endoscopists have to be accustomed to their systems, while also demonstrating the ease of image correction. The data also provided the basis for further detailed research on how the distortion rate affects the learning process and practice of the endoscopist not only in otorhinolaryngology, but in other medical fields such as abdominal surgery and orthopedics.

Conclusion: The natural optical distortion of any endoscope can be easily recorded and measured with our device, provided the constant conditions. The post-process corrections could at some point be programed into the imaging systems and provide an undistorted live feed endoscopy image.

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