RESUMO
Sixteen segments of normal human aorta were irradiated by Nd:YAG laser beam delivered via domestically made metal cap and sapphire tip fibre systems. It was found that the metal tip fibre caused more target tissue damage and adhesion than the sapphire tip fibre. The sapphire tip fibre caused an ablation crater with a smoother edge, less carbonization layer and smaller thermal necrotic zone than the metal tip did. The metal cap and sapphire tip fibre were applied to 2 cases of iliac artery stenosis and 5 cases of coronary stenosis, all showing an immediate ablation.
Assuntos
Angioplastia Coronária com Balão , Angioplastia com Balão a Laser/métodos , Doença das Coronárias/terapia , Artéria Ilíaca , Constrição Patológica/cirurgia , Constrição Patológica/terapia , Doença das Coronárias/cirurgia , Feminino , Tecnologia de Fibra Óptica , Humanos , Masculino , Pessoa de Meia-IdadeRESUMO
The effects of pulsed radiation on animal models were studied. Erythemic responses to laser radiation were observed macroscopically and were examined histologically by both light and electron microscopy. Based on statistical analysis of the biological data presented in this study, skin damage thresholds were calculated for short pulses with lasers at wavelengths of 265 nm and 308 nm.