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Proceedings Paper

Infrared fiber optic radiometry analysis to prevent tissue injuries during endourological laser therapy
Author(s): Yuichiro Daidoh; Tsunenori Arai; Satoshi Inazaki; Masato Nakagawa; Akira Suda; Makoto Kikuchi; Yukikuni Komine; Masaru Murai; Hiroshi Nakamura
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Paper 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.

Paper Details

Date Published: 1 July 1990
PDF: 6 pages
Proc. SPIE 1201, Optical Fibers in Medicine V, (1 July 1990); doi: 10.1117/12.17568
Show Author Affiliations
Yuichiro Daidoh, Self Defense Forces Central Hospital (Japan)
Tsunenori Arai, National Defense Medical College (Japan)
Satoshi Inazaki, National Defense Medical College (Japan)
Masato Nakagawa, National Defense Medical College (Japan)
Akira Suda, National Defense Medical College (Japan)
Makoto Kikuchi, National Defense Medical College (Japan)
Yukikuni Komine, Self Defense Forces Central Hospital (Japan)
Masaru Murai, National Defense Medical College (Japan)
Hiroshi Nakamura, National Defense Medical College (Japan)


Published in SPIE Proceedings Vol. 1201:
Optical Fibers in Medicine V
Abraham Katzir, Editor(s)

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