OBJECTIVE: The purpose of this study was to compare the penetration of 808 and 980 nm laser light through bovine tissue samples 18-95 mm thick. BACKGROUND DATA: Low-level laser therapy (LLLT) is frequently used to treat musculoskeletal pathologies. Some of the therapeutic targets are several centimeters deep. METHODS: Laser light at 808 and 980 nm (1 W/cm(2)) was projected through bovine tissue samples ranging in thickness from 18 to 95 mm. Power density measurements were taken for each wavelength at the various depths. RESULTS: For 808 nm, 1 mW/cm(2) was achieved at 3.4 cm, but for 980 nm, 1 mW/cm(2) was achieved at only 2.2 cm depth of tissue. CONCLUSIONS: It was determined that 808 nm of light penetrates as much as 54% deeper than 980 nm light in bovine tissue.
OBJECTIVE: The purpose of this study was to compare the penetration of 808 and 980 nm laser light through bovine tissue samples 18-95 mm thick. BACKGROUND DATA: Low-level laser therapy (LLLT) is frequently used to treat musculoskeletal pathologies. Some of the therapeutic targets are several centimeters deep. METHODS: Laser light at 808 and 980 nm (1 W/cm(2)) was projected through bovine tissue samples ranging in thickness from 18 to 95 mm. Power density measurements were taken for each wavelength at the various depths. RESULTS: For 808 nm, 1 mW/cm(2) was achieved at 3.4 cm, but for 980 nm, 1 mW/cm(2) was achieved at only 2.2 cm depth of tissue. CONCLUSIONS: It was determined that 808 nm of light penetrates as much as 54% deeper than 980 nm light in bovine tissue.
Authors: Judith A E M Zecha; Judith E Raber-Durlacher; Raj G Nair; Joel B Epstein; Stephen T Sonis; Sharon Elad; Michael R Hamblin; Andrei Barasch; Cesar A Migliorati; Dan M J Milstein; Marie-Thérèse Genot; Liset Lansaat; Ron van der Brink; Josep Arnabat-Dominguez; Lisette van der Molen; Irene Jacobi; Judi van Diessen; Jan de Lange; Ludi E Smeele; Mark M Schubert; René-Jean Bensadoun Journal: Support Care Cancer Date: 2016-03-16 Impact factor: 3.603
Authors: Valéria Regina Gonzalez Sella; Fernando Russo Costa do Bomfim; Paula Carolina Dias Machado; Maria José Misael da Silva Morsoleto; Milton Chohfi; Helio Plapler Journal: Lasers Med Sci Date: 2015-01-18 Impact factor: 3.161
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