Optical quality assessment of rigid endoscopes during clinical lifetime

Herke Jan Noordmans; Ijen Van Mil; Said Daoudi; Sander Kruit; Henk Den Van Brink; Rudolf Verdaasdonk

doi:10.1117/12.648497

Optical quality assessment of rigid endoscopes during clinical lifetime

Herke Jan Noordmans^*, Ijen Van Mil, Said Daoudi, Sander Kruit, Henk Den Van Brink, Rudolf Verdaasdonk

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

4 Citations (Scopus)

31 Downloads (Pure)

Abstract

An endoscope test bench is presented to test the optical quality of endoscopes on a regular basis to assure optimal image quality during surgery. A power LED and a photo diode are used to measure the transmission of the illumination fibers. Captures of target images displayed on a LCD screen as seen through the endoscope with a high resolution camera are analyzed to determine the contrast for different spatial line pairs. Transmission and contrast plots are compared to reference data to determine whether an endoscope is still acceptable for clinical application. Results show that endoscopes degrade gradually but steadily over time. In time a large database of various types of endoscope will be built to fine-tune the criteria for approval or rejection of the endoscopes.

Original language	English
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
DOIs	https://doi.org/10.1117/12.648497
Publication status	Published - 8 May 2006
Externally published	Yes
Event	Endoscopic Microscopy 2006 - San Jose, United States Duration: 22 Jan 2006 → 22 Jan 2006

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	6082
ISSN (Print)	0277-786X

Conference

Conference	Endoscopic Microscopy 2006
Country/Territory	United States
City	San Jose
Period	22/01/06 → 22/01/06

Keywords

Contrast graph
Endoscopy
Quality assurance

Access to Document

10.1117/12.648497

60820HFinal published version, 688 KB

Cite this

Noordmans, H. J., Van Mil, I., Daoudi, S., Kruit, S., Van Brink, H. D., & Verdaasdonk, R. (2006). Optical quality assessment of rigid endoscopes during clinical lifetime. In Proceedings of SPIE - The International Society for Optical Engineering [60820H] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6082). https://doi.org/10.1117/12.648497

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title = "Optical quality assessment of rigid endoscopes during clinical lifetime",

abstract = "An endoscope test bench is presented to test the optical quality of endoscopes on a regular basis to assure optimal image quality during surgery. A power LED and a photo diode are used to measure the transmission of the illumination fibers. Captures of target images displayed on a LCD screen as seen through the endoscope with a high resolution camera are analyzed to determine the contrast for different spatial line pairs. Transmission and contrast plots are compared to reference data to determine whether an endoscope is still acceptable for clinical application. Results show that endoscopes degrade gradually but steadily over time. In time a large database of various types of endoscope will be built to fine-tune the criteria for approval or rejection of the endoscopes.",

keywords = "Contrast graph, Endoscopy, Quality assurance",

author = "Noordmans, {Herke Jan} and {Van Mil}, Ijen and Said Daoudi and Sander Kruit and {Van Brink}, {Henk Den} and Rudolf Verdaasdonk",

year = "2006",

month = may,

day = "8",

doi = "10.1117/12.648497",

language = "English",

isbn = "0819461245",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

note = "Endoscopic Microscopy 2006 ; Conference date: 22-01-2006 Through 22-01-2006",

}

Noordmans, HJ, Van Mil, I, Daoudi, S, Kruit, S, Van Brink, HD & Verdaasdonk, R 2006, Optical quality assessment of rigid endoscopes during clinical lifetime. in Proceedings of SPIE - The International Society for Optical Engineering., 60820H, Proceedings of SPIE - The International Society for Optical Engineering, vol. 6082, Endoscopic Microscopy 2006, San Jose, California, United States, 22/01/06. https://doi.org/10.1117/12.648497

Optical quality assessment of rigid endoscopes during clinical lifetime. / Noordmans, Herke Jan; Van Mil, Ijen; Daoudi, Said; Kruit, Sander; Van Brink, Henk Den; Verdaasdonk, Rudolf.

Proceedings of SPIE - The International Society for Optical Engineering. 2006. 60820H (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6082).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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AU - Daoudi, Said

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AU - Van Brink, Henk Den

AU - Verdaasdonk, Rudolf

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N2 - An endoscope test bench is presented to test the optical quality of endoscopes on a regular basis to assure optimal image quality during surgery. A power LED and a photo diode are used to measure the transmission of the illumination fibers. Captures of target images displayed on a LCD screen as seen through the endoscope with a high resolution camera are analyzed to determine the contrast for different spatial line pairs. Transmission and contrast plots are compared to reference data to determine whether an endoscope is still acceptable for clinical application. Results show that endoscopes degrade gradually but steadily over time. In time a large database of various types of endoscope will be built to fine-tune the criteria for approval or rejection of the endoscopes.

AB - An endoscope test bench is presented to test the optical quality of endoscopes on a regular basis to assure optimal image quality during surgery. A power LED and a photo diode are used to measure the transmission of the illumination fibers. Captures of target images displayed on a LCD screen as seen through the endoscope with a high resolution camera are analyzed to determine the contrast for different spatial line pairs. Transmission and contrast plots are compared to reference data to determine whether an endoscope is still acceptable for clinical application. Results show that endoscopes degrade gradually but steadily over time. In time a large database of various types of endoscope will be built to fine-tune the criteria for approval or rejection of the endoscopes.

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Optical quality assessment of rigid endoscopes during clinical lifetime

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Keywords

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