Infrared laser-tissue interaction during transmyocardial laser revascularization

Helena Jelinkova; Alexandr Jancarek; Miroslav Vrbova; Vaclav Kubecek; Daniel Dvoracek; G. Kuhnova; Jan Sulc; Pavel Cerny; Michal Nemec; Jan Kvasnicka; Milan R. Kokta

doi:10.1117/12.389509

28 June 2000 Infrared laser-tissue interaction during transmyocardial laser revascularization

Helena Jelinkova, Alexandr Jancarek, Miroslav Vrbova, Vaclav Kubecek, Daniel Dvoracek, G. Kuhnova, Jan Sulc, Pavel Cerny, Michal Nemec, Jan Kvasnicka, Milan R. Kokta

Author Affiliations +

Proceedings Volume 4166, Laser Florence '99: A Window on the Laser Medicine World; (2000) https://doi.org/10.1117/12.389509
Event: Laser Florence '99, 1999, Florence, Italy

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.

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Helena Jelinkova, Alexandr Jancarek, Miroslav Vrbova, Vaclav Kubecek, Daniel Dvoracek, G. Kuhnova, Jan Sulc, Pavel Cerny, Michal Nemec, Jan Kvasnicka, and Milan R. Kokta "Infrared laser-tissue interaction during transmyocardial laser revascularization", Proc. SPIE 4166, Laser Florence '99: A Window on the Laser Medicine World, (28 June 2000); https://doi.org/10.1117/12.389509

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