28 June 2000 Infrared laser-tissue interaction during transmyocardial laser revascularization
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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, Helena Jelinkova, Alexandr Jancarek, Alexandr Jancarek, Miroslav Vrbova, Miroslav Vrbova, Vaclav Kubecek, Vaclav Kubecek, Daniel Dvoracek, Daniel Dvoracek, G. Kuhnova, G. Kuhnova, Jan Sulc, Jan Sulc, Pavel Cerny, Pavel Cerny, Michal Nemec, Michal Nemec, Jan Kvasnicka, Jan Kvasnicka, Milan R. Kokta, 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); doi: 10.1117/12.389509; https://doi.org/10.1117/12.389509

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