Research Papers: General

Simulation of laser propagation through a three-layer human skin model in the spectral range from 1000 to 1900 nm

[+] Author Affiliations
Babak Nasouri

The University of Texas at Austin, Mechanical Engineering Department, 204 E. Dean Keeton Street, Austin, Texas 78712

Thomas E. Murphy

The University of Texas at Austin, Mechanical Engineering Department, 204 E. Dean Keeton Street, Austin, Texas 78712

Halil Berberoglu

The University of Texas at Austin, Mechanical Engineering Department, 204 E. Dean Keeton Street, Austin, Texas 78712

J. Biomed. Opt. 19(7), 075003 (Jul 07, 2014). doi:10.1117/1.JBO.19.7.075003
History: Received March 15, 2014; Revised June 3, 2014; Accepted June 5, 2014
Text Size: A A A

Abstract.  For understanding the mechanisms of low-level laser/light therapy (LLLT), accurate knowledge of light interaction with tissue is necessary. We present a three-dimensional, multilayer reduced-variance Monte Carlo simulation tool for studying light penetration and absorption in human skin. Local profiles of light penetration and volumetric absorption were calculated for uniform as well as Gaussian profile beams with different spreads over the spectral range from 1000 to 1900 nm. The results showed that lasers within this wavelength range could be used to effectively and safely deliver energy to specific skin layers as well as achieve large penetration depths for treating deep tissues, without causing skin damage. In addition, by changing the beam profile from uniform to Gaussian, the local volumetric dosage could increase as much as three times for otherwise similar lasers. We expect that this tool along with the results presented will aid researchers in selecting wavelength and laser power in LLLT.

Figures in this Article
© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Babak Nasouri ; Thomas E. Murphy and Halil Berberoglu
"Simulation of laser propagation through a three-layer human skin model in the spectral range from 1000 to 1900 nm", J. Biomed. Opt. 19(7), 075003 (Jul 07, 2014). ; http://dx.doi.org/10.1117/1.JBO.19.7.075003


Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

PubMed Articles
Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.