Special Section on Laser Applications in Life Sciences

Effects of tissue water content on the propagation of laser light during low-level laser therapy

[+] Author Affiliations
Soogeun Kim

Gwangju Institute of Science and Technology, School of Mechatronics, 1 Oryong-dong Buk-gu, Gwangju 500-712, Republic of Korea

Sungho Shin

Gwangju Institute of Science and Technology, School of Mechatronics, 1 Oryong-dong Buk-gu, Gwangju 500-712, Republic of Korea

Sungho Jeong

Gwangju Institute of Science and Technology, School of Mechatronics, 1 Oryong-dong Buk-gu, Gwangju 500-712, Republic of Korea

J. Biomed. Opt. 20(5), 051027 (Jan 22, 2015). doi:10.1117/1.JBO.20.5.051027
History: Received August 31, 2014; Accepted December 31, 2014
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Abstract.  This work reports that the laser fluence rate inside porcine skin varied notably with the change of tissue water content under the same laser irradiation conditions. The laser fluence rate inside skin tissue samples with varying water content was measured using an optical fiber sensor, while the target was irradiated either by a low-level 635 or 830 nm laser (50mW/cm2). It was demonstrated that the distribution of laser fluence rate inside the target is strongly affected by tissue water content and its profile is determined by the water content dependency of optical properties at the laser wavelength.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Soogeun Kim ; Sungho Shin and Sungho Jeong
"Effects of tissue water content on the propagation of laser light during low-level laser therapy", J. Biomed. Opt. 20(5), 051027 (Jan 22, 2015). ; http://dx.doi.org/10.1117/1.JBO.20.5.051027


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