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This study aimed the development of mathematical model of laser coagulation called HELIOS. Its capability to predict thermal coagulation was evaluated by comparison with calculated and experimental in-vivo results for C02, Argon and CW Nd:YAG laser. The results show that HELIOS allows good prediction of tissue temperature and necrosis depth.
Adaptive control is proposed as a useful process for an improvement of Nd:YAG laser treatments. A computer-controlled Nd:YAG laser system with a closed-loop capability has been developed. Infrared radiometry provided noncontact temperature measurement for real-time coagulation and ablation control. The controller design is based on the predicted response, defined by mathematical models. Deviations...
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