Infrared fiber optic radiometry analysis to prevent tissue injuries during endourological laser therapy

Yuichiro Daidoh M.D.; Tsunenori Arai; Satoshi Inazaki; Masato Nakagawa M.D.; Akira Suda; Makoto Kikuchi; Yukikuni Komine; Masaru Murai M.D.; Hiroshi Nakamura M.D.

doi:10.1117/12.17568

1 July 1990 Infrared fiber optic radiometry analysis to prevent tissue injuries during endourological laser therapy

Yuichiro Daidoh M.D., Tsunenori Arai, Satoshi Inazaki, Masato Nakagawa M.D., Akira Suda, Makoto Kikuchi, Yukikuni Komine, Masaru Murai M.D., Hiroshi Nakamura M.D.

Author Affiliations +

Proceedings Volume 1201, Optical Fibers in Medicine V; (1990) https://doi.org/10.1117/12.17568
Event: OE/LASE '90, 1990, Los Angeles, CA, United States

Abstract

To prevent a false laser irradiation to an urotherial tissue during the laser stone fragmentation, we applied the fiber-optic pulsed photothermal radiometry (PPTR) to discrimination between urinary stones and urotherial tissues. The experiment was made in vitro with the various wet sample of the urinary stones and the canine urotherial tissues. Three different lasers, ultraviolet argon laser(UV Ar laser), visible argon laser(Vis. Ar laser) and carbon monoxide laser(CO laser), were used for excitation light sources of the PF'TR method and compared to obtain clear discrimination between the stones and the tissue. The UV Ar laser gave the best result among them. The wet canine urotherial tissue was clearly differential from the urinary stones by the measurement of the e-folding decay time of the PPTR waveform.

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Yuichiro Daidoh M.D., Tsunenori Arai, Satoshi Inazaki, Masato Nakagawa M.D., Akira Suda, Makoto Kikuchi, Yukikuni Komine, Masaru Murai M.D., and Hiroshi Nakamura M.D. "Infrared fiber optic radiometry analysis to prevent tissue injuries during endourological laser therapy", Proc. SPIE 1201, Optical Fibers in Medicine V, (1 July 1990); https://doi.org/10.1117/12.17568

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KEYWORDS

Argon ion lasers

Gas lasers

Tissues

Fiber optics

Laser tissue interaction

Ultraviolet radiation

Infrared radiation

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