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Thermographic study of laser on arteries
Author(s) -
Mnitentag J.,
Marques E. F.,
Ribeiro M. P.,
Braga G. A.,
Navarro M. R.,
Veratti A. B.,
Armelin E.,
Macruz R.,
Jatene A. D.
Publication year - 1987
Publication title -
lasers in surgery and medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 112
eISSN - 1096-9101
pISSN - 0196-8092
DOI - 10.1002/lsm.1900070405
Subject(s) - laser , materials science , argon , aorta , optics , biomedical engineering , biological tissue , gas laser , chemistry , medicine , surgery , physics , organic chemistry
We analyzed the different effects of CO 2 , Nd‐YAG, and argon lasers on aorta by using a Thermovision infrared system that registered the laser interaction with mongrel dog aorta. The images (thermograms) obtained were processed by a computer, which associated each area of the same temperature with a determined color. These thermograms were compared to histological analysis of the respective samples and the following results were obtained: (1) After the application of each laser there is very little propagation of heat in tissue. (2) The CO 2 laser makes tissue reach 100°C in less than 0.05 seconds. (3) The heat dissipation time was higher with the Nd‐YAG laser due to higher scattering on tissue. Based on this research we conclude that the CO 2 laser was best absorbed, the Nd‐YAG laser penetrated human tissue with the best results, and the argon laser had the most significant backscattering.