CO laser angioplasty using contact irradiation

T. Arai, M. Nakagawa, M. Kikuchi, K. Mizuno, A. Miyamoto, Y. Okamoto, T. Shibuya, K. Satomura, K. Arakawa, K. Horiuchi, K. Isojima, A. Kurita, H. Nakamura, A. Utsumi, K. Takeuchi, M. Katoh

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


We successfully demonstrated usefulness of CO laser angioplasty. We investigated in vivo CO laser angioplasty using contact irradiation under visualization by a thin endoscope in atheromatous rabbit aorta, which was temporary filled by saline during the irradiation. 4W, 4s contact irradiation via 400ym As-S glass fiber to atheromatous aorta wall made a fine ablation hole with the minimum heat injuries to remained vascular tissue. A small amount of char was found on ZnSe contact tip after approximately 20 irradiations. But no damage was occurred in the tip. We think the visualization in the arterial lumen by the thin endoscope may be useful for pre-diagnosis and targeting of laser therapy.

Original languageEnglish
Pages (from-to)141-144
Number of pages4
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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