Comparison of atheromatous tissue ablation between CO laser and excimer laser irradiations

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

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

UV (XeCl, XeF excimer) and IR (CO, Er:YAG) lasers are of interest for laser angioplasty owing to their restricted light penetration in living tissue, which prevents vascular perforation. The authors investigated the quantitative ablation rate of vascular tissue, both normal and diseased, by IR (CO) and UV (XeCl, XeF) lasers to determine the optimum laser wavelength for which selective ablation is achieved. All experiments were done in vitro. The results show that CO laser radiation preferentially ablates the yellow atheroma with an affinity factor of 1.8. This affinity factor can be attributed to the low melting (and/or vaporizing) point of fatty materials following thermal ablation by the CO laser. However, XeF laser radiation exhibits an inverse affinity (affinity factor of 0.6). A normal layer of the vascular wall contains more proteins than yellow plaque, so that the absorption of UV lasers in the normal vascular wall may be greater than in the plaque.

本文言語English
ホスト出版物のタイトルCONFERENCE ON LASERS AND ELECTRO-0PTICS
編集者 Anon
出版社Publ by IEEE
ページ48-49
ページ数2
ISBN(印刷版)1557520860
出版ステータスPublished - 1989 12 1
イベントSummaries of Papers Presented at the Conference on Lasers and Electro-Optics - Baltimore, MD, USA
継続期間: 1989 4 241989 4 28

出版物シリーズ

名前CONFERENCE ON LASERS AND ELECTRO-0PTICS

Other

OtherSummaries of Papers Presented at the Conference on Lasers and Electro-Optics
CityBaltimore, MD, USA
Period89/4/2489/4/28

ASJC Scopus subject areas

  • Engineering(all)

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