Based on the fact that malignant cancerous lesions (neoplasms) develop high metabolism and use more blood supply than normal tissue, infrared thermography (IR) has become a reliable clinical technique used to indicate noninvasively the presence of cancerous diseases, e.g., skin and breast cancer. However, to diagnose cancerous diseases by IR, the technique requires procedures that explore the relationship between the neoplasm characteristics (size, blood perfusion rate and heat generated) and the resulting temperature distribution on the skin surface. In this research work the dual reciprocity boundary element method (DRBEM) has been coupled with the simulated annealing technique (SA) in a new inverse procedure, which coupled to the IR technique, is capable of estimating simultaneously geometrical and thermophysical parameters of the neoplasm. The method is of an evolutionary type, requiring random initial values for the unknown parameters and no calculations of sensitivities or search directions. In addition, the DRBEM does not require any re-meshing at each proposed solution to solve the bioheat model. The inverse procedure has been tested considering input data for simulated neoplasms of different sizes and positions in relation to the skin surface. The successful estimation of unknown neoplasm parameters validates the idea of using the SA technique and the DRBEM in the estimation of parameters. Other estimation techniques, based on genetic algorithms or sensitivity coefficients, have not been capable of obtaining a solution because the skin surface temperature difference is very small.
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jm.luna.1980@gmail.com
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abel@ugto.mx
franciscoeb@ugto.mx
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March 2012
Research Papers
Procedure to Estimate Thermophysical and Geometrical Parameters of Embedded Cancerous Lesions Using Thermography
Jose Manuel Luna,
jm.luna.1980@gmail.com
Jose Manuel Luna
University of Guanajuato
, Department of Mechanical Engineering, Apartado Postal 215A, 36730, Salamanca, GTO., Mexico
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Ricardo Romero-Mendez,
rromerom@uaslp.mx
Ricardo Romero-Mendez
Autonomous University of San Luis Potosi
, School of Engineering, Dr. Manuel Nava 8, 78290, San Luis Potosi, SLP., Mexico
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Abel Hernandez-Guerrero,
abel@ugto.mx
Abel Hernandez-Guerrero
University of Guanajuato
, Department of Mechanical Engineering, Apartado Postal 215A, 36730, Salamanca, GTO., Mexico
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Francisco Elizalde-Blancas
franciscoeb@ugto.mx
Francisco Elizalde-Blancas
University of Guanajuato
, Department of Mechanical Engineering, Apartado Postal 215A, 36730, Salamanca, GTO., Mexico
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Jose Manuel Luna
University of Guanajuato
, Department of Mechanical Engineering, Apartado Postal 215A, 36730, Salamanca, GTO., Mexico
jm.luna.1980@gmail.com
Ricardo Romero-Mendez
Autonomous University of San Luis Potosi
, School of Engineering, Dr. Manuel Nava 8, 78290, San Luis Potosi, SLP., Mexico
rromerom@uaslp.mx
Abel Hernandez-Guerrero
University of Guanajuato
, Department of Mechanical Engineering, Apartado Postal 215A, 36730, Salamanca, GTO., Mexico
abel@ugto.mx
Francisco Elizalde-Blancas
University of Guanajuato
, Department of Mechanical Engineering, Apartado Postal 215A, 36730, Salamanca, GTO., Mexico
franciscoeb@ugto.mx
J Biomech Eng. Mar 2012, 134(3): 031008 (9 pages)
Published Online: March 27, 2012
Article history
Received:
June 16, 2011
Revised:
February 10, 2012
Accepted:
February 16, 2012
Posted:
February 24, 2012
Published:
March 26, 2012
Online:
March 27, 2012
Citation
Manuel Luna, J., Romero-Mendez, R., Hernandez-Guerrero, A., and Elizalde-Blancas, F. (March 27, 2012). "Procedure to Estimate Thermophysical and Geometrical Parameters of Embedded Cancerous Lesions Using Thermography." ASME. J Biomech Eng. March 2012; 134(3): 031008. https://doi.org/10.1115/1.4006197
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