Fiber optic pulsed photothermal radiometry for urinary stone diagnosis

Yuichiro Daidoh, Yukikuni Komine, Hiroshi Nakamura, Tsunenori Arai, Masato Nakagawa, Makoto Kikuchi, Satoshi Inazaki, Moriaki Wakaki

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


We investigated a fiber-optic infrared radiation diagnosis for in vivo urinary tract tissue discrimination during laser urinary stone fragmentation. Such in vivo analysis may be useful for preventing mis-irradiation to surrounding tissue. Since we plan to use infrared lasers and infrared fibers to the urinary stones photofragmentation, the pulsed photothermal radiometry(PPTR) was employed in this study due to its simplicity and benefit of common use of the infrared laser and fiber to therapy and diagnosis. We successfully demonstrated a discrimination between urinary stones and urinary tract tissue, by a chalcogenide glass fiber-optic CO laser induced PPTR analysis.

Original languageEnglish
Pages (from-to)303-307
Number of pages5
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 1989 Jun 15
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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