Open AccessInfluence of a fat layer on the near infrared spectra of human muscle: quantitative analysis based on two-layered Monte Carlo simulations and phantom experiments
Author(s) -
Yong Yang,
Olusola O. Soyemi,
Michelle Landry,
Babs R. Soller
Publication year - 2005
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.001570
Subject(s) - monte carlo method , imaging phantom , materials science , optics , scattering , diffuse reflection , attenuation coefficient , absorption (acoustics) , near infrared spectroscopy , infrared , spectral line , physics , mathematics , statistics , astronomy
The influence of fat thickness on the diffuse reflectance spectra of muscle in the near infrared (NIR) region is studied by Monte Carlo simulations of a two-layer structure and with phantom experiments. A polynomial relationship was established between the fat thickness and the detected diffuse reflectance. The influence of a range of optical coefficients (absorption and reduced scattering) for fat and muscle over the known range of human physiological values was also investigated. Subject-to-subject variation in the fat optical coefficients and thickness can be ignored if the fat thickness is less than 5 mm. A method was proposed to correct the fat thickness influence.