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Keywords = Kubelika-Munk model

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13 pages, 4269 KB  
Article
A Method for Medical Diagnosis Based on Optical Fluence Rate Distribution at Tissue Surface
by Omnia Hamdy, Jala El-Azab, Tarek A. Al-Saeed, Mahmoud F. Hassan and Nahed H. Solouma
Materials 2017, 10(9), 1104; https://doi.org/10.3390/ma10091104 - 20 Sep 2017
Cited by 34 | Viewed by 6458
Abstract
Optical differentiation is a promising tool in biomedical diagnosis mainly because of its safety. The optical parameters’ values of biological tissues differ according to the histopathology of the tissue and hence could be used for differentiation. The optical fluence rate distribution on tissue [...] Read more.
Optical differentiation is a promising tool in biomedical diagnosis mainly because of its safety. The optical parameters’ values of biological tissues differ according to the histopathology of the tissue and hence could be used for differentiation. The optical fluence rate distribution on tissue boundaries depends on the optical parameters. So, providing image displays of such distributions can provide a visual means of biomedical diagnosis. In this work, an experimental setup was implemented to measure the spatially-resolved steady state diffuse reflectance and transmittance of native and coagulated chicken liver and native and boiled breast chicken skin at 635 and 808 nm wavelengths laser irradiation. With the measured values, the optical parameters of the samples were calculated in vitro using a combination of modified Kubelka-Munk model and Bouguer-Beer-Lambert law. The estimated optical parameters values were substituted in the diffusion equation to simulate the fluence rate at the tissue surface using the finite element method. Results were verified with Monte-Carlo simulation. The results obtained showed that the diffuse reflectance curves and fluence rate distribution images can provide discrimination tools between different tissue types and hence can be used for biomedical diagnosis. Full article
(This article belongs to the Special Issue Laser in Nanotechnology and Biomedical Applications)
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