Medical-grade sterilizable target for fluid-immersed fetoscope optical distortion calibration

Article


Nikitichev, D., Shakir, D., Chadebecq, F., Tella, M., Deprest, J., Stoyanov, D., Ourselin, S. and Vercauteren, T. 2017. Medical-grade sterilizable target for fluid-immersed fetoscope optical distortion calibration. Journal of Visualized Experiments. 120, p. e55298. https://doi.org/10.3791/55298
TypeArticle
TitleMedical-grade sterilizable target for fluid-immersed fetoscope optical distortion calibration
AuthorsNikitichev, D., Shakir, D., Chadebecq, F., Tella, M., Deprest, J., Stoyanov, D., Ourselin, S. and Vercauteren, T.
Abstract

We have developed a calibration target for use with fluid-immersed endoscopes within the context of the GIFT-Surg (Guided Instrumentation for Fetal Therapy and Surgery) project. One of the aims of this project is to engineer novel, real-time image processing methods for intra-operative use in the treatment of congenital birth defects, such as spina bifida and the twin-to-twin transfusion syndrome. The developed target allows for the sterility-preserving optical distortion calibration of endoscopes within a few minutes. Good optical distortion calibration and compensation are important for mitigating undesirable effects like radial distortions, which not only hamper accurate imaging using existing endoscopic technology during fetal surgery, but also make acquired images less suitable for potentially very useful image computing applications, like real-time mosaicing. In this paper proposes a novel fabrication method to create an affordable, sterilizable calibration target suitable for use in a clinical setup. This method involves etching a calibration pattern by laser cutting a sandblasted stainless steel sheet. This target was validated using the camera calibration module provided by OpenCV, a state-of-the-art software library popular in the computer vision community.

KeywordsBioengineering; Issue 120; fluid-immersed optical distortion calibration; endoscopy; prototyping; medical device; autoclaving; medical imaging
LanguageEnglish
PublisherMyJove Corporation
JournalJournal of Visualized Experiments
ISSN
Electronic1940-087X
Publication dates
Online23 Feb 2017
Publication process dates
Accepted2017
Deposited28 Feb 2024
Output statusPublished
Publisher's version
License
File Access Level
Open
Digital Object Identifier (DOI)https://doi.org/10.3791/55298
Web of Science identifierWOS:000397847700082
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https://repository.mdx.ac.uk/item/z8082

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