Thermographic evaluation of early melanoma
within the vascularized skin using combined non-Newtonian blood flow and
bioheat models.
Abstract
A theoretical study on vascularized skin model to predict the thermal
evaluation criteria of early
melanoma using the
dynamic thermal imaging technique is presented in this article. Thermographic
evaluation of
melanoma has been carried out during
the thermal recovery of skin from undercooled condition. During thermal
recovery, the skin has been exposed to natural convection, radiation, and
evaporation. The thermal responses of
melanoma
have been evaluated by integrating the bioheat model for multi-layered skin
with the momentum as well as energy conservation equations for blood flow.
Differential changes in the surface thermal response of various
melanoma stages except that of the early stage have been
determined. It has been predicted that the thermal response due to subsurface
blood flow overpowers the response of early
melanoma.
Hence, the study suggests that the quantification of early
melanoma diagnosis using
thermography
has not reached a matured stage yet. Therefore, the study presents a systematic
analysis of various intermediate
melanoma stages
to determine the thermal evaluation criteria of early
melanoma.
The comprehensive modeling effort made in this work supports the prediction of
the disease outcome and relates the thermal response with the variation in
patho-physiological, thermal and geometrical parameters.
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