Analysis of radiative signals from normal and malignant human skins subjected to a short-pulse laser

Responses from a normal skin and a malignant human skin subjected to a low power short-pulse laser are studied. Temporal variations of transmittance and reflectance that carry the signature of the skin conditions are analyzed. The normal skin is modeled based on the anatomical details available in t...

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Bibliographic Details
Published in:International journal of heat and mass transfer 2014-01, Vol.68, p.278-294
Main Authors: Bhowmik, Arka, Repaka, Ramjee, Mishra, Subhash C., Mitra, Kunal
Format: Article
Language:English
Subjects:
Discrete ordinate method
Human
Lasers
Lesions
Malignant human skin
Mathematical analysis
Mathematical models
Optical properties
Radiative heat transfer
Reflectance
Reflectivity
Short-pulse laser
Transmittance
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Summary:Responses from a normal skin and a malignant human skin subjected to a low power short-pulse laser are studied. Temporal variations of transmittance and reflectance that carry the signature of the skin conditions are analyzed. The normal skin is modeled based on the anatomical details available in the literature. The malignant skin represents commonly found skin lesions, viz., non-melanoma and cutaneous melanoma. Optical properties of the skin such as the absorption and the scattering coefficients cover various lesions, and they are within the therapeutic optical window of 600–1300nm wavelength. Scattering is modeled using Henyey–Greenstein phase function. The transient radiative heat transfer equation is solved using the modified discrete ordinate method.
ISSN:0017-9310
1879-2189
DOI:10.1016/j.ijheatmasstransfer.2013.09.032