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Proceedings Paper

Infrared laser-tissue interaction during transmyocardial laser revascularization
Author(s): Helena Jelinkova; Alexandr Jancarek; Miroslav Vrbova; Vaclav Kubecek; Daniel Dvoracek; G. Kuhnova; Jan Sulc; Pavel Cerny; Michal Nemec; Jan Kvasnicka; Milan R. Kokta
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Paper Abstract

Transmyocardial laser revascularization was found to be a new way how to convey oxygen-rich blood directly from the left ventricular cavity to the myocardium. In our study, a comparison has been made of the interaction of mid-IR solid state laser radiation with a myocardium tissue. For this purpose, the CTH:YAG, Tm:YAG and Er:YAG laser systems were designed, constructed and used for the interaction experiments. Besides those mid-IR lasers, the commercially produced CO2 laser was used for the comparative study. The ablation coefficients were measured to be 0.029 mm/J for CTH:YAG laser radiation; 0.061 mm/J for Tm:YAG; 0.75 mm/J for CO2, and 10.5 mm/J for Er:YAG. From the histological examination follows that only the channels ablated by Er:YAG laser radiation are without any thermal damage of the surrounding tissue and with the minimal mechanical injury. As a conclusion - Er:YAG laser could be considered as a good candidate for the TMR besides CO2 laser.

Paper Details

Date Published: 28 June 2000
PDF: 6 pages
Proc. SPIE 4166, Laser Florence '99: A Window on the Laser Medicine World, (28 June 2000); doi: 10.1117/12.389509
Show Author Affiliations
Helena Jelinkova, Czech Technical Univ. (Czech Republic)
Alexandr Jancarek, Czech Technical Univ. (Czech Republic)
Miroslav Vrbova, Czech Technical Univ. (Czech Republic)
Vaclav Kubecek, Czech Technical Univ. (Czech Republic)
Daniel Dvoracek, Czech Technical Univ. (Czech Republic)
G. Kuhnova, Czech Technical Univ. (Czech Republic)
Jan Sulc, Czech Technical Univ. (Czech Republic)
Pavel Cerny, Czech Technical Univ. (Czech Republic)
Michal Nemec, Czech Technical Univ. (Czech Republic)
Jan Kvasnicka, Charles Univ. II (Czech Republic)
Milan R. Kokta, Bircon Crystal Products (United States)


Published in SPIE Proceedings Vol. 4166:
Laser Florence '99: A Window on the Laser Medicine World
Leonardo Longo; Alfons G. Hofstetter; Mihail-Lucian Pascu; Wilhelm R.A. Waidelich, Editor(s)

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