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Proceedings Paper

Photothermal deflection of laser beam as means to characterize thermal properties of biological tissue: numerical study
Author(s): Enoch Gutierrez-Herrera; Celia Sánchez-Pérez; Carlos A. García-Cadena; Joselín Hernández-Ruiz
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Paper Abstract

Non-subjective and early diagnostic technique for liver fibrosis may decrease morbidity in patients and reduce medical costs. Liver fibrosis results in changes in density and thermal properties of tissue. In this work, we evaluate numerically the feasibility of using the optical beam deflection method (OBDM) by means of a thermo-optic material in contact with liver tissue to quantitate changes in thermal conduction. We use the finite-difference method to model the heat transfer in liver and acrylic slab. The response required for thermal characterization for different fibrosis stages is assessed by calculating the deflection angle using ray trace analysis. Numerical study shows the potential of the OBDM for developing an optical-integrated sensor as non-subjective diagnostic technique for liver fibrosis.

Paper Details

Date Published: 28 August 2015
PDF: 9 pages
Proc. SPIE 9609, Infrared Sensors, Devices, and Applications V, 960913 (28 August 2015); doi: 10.1117/12.2191915
Show Author Affiliations
Enoch Gutierrez-Herrera, Ctr. de Ciencias Aplicadas y Desarrollo Tecnológico (Mexico)
Univ. Nacional Autónoma de México (Mexico)
Celia Sánchez-Pérez, Ctr. de Ciencias Aplicadas y Desarrollo Tecnológico (Mexico)
Carlos A. García-Cadena, Ctr. de Ciencias Aplicadas y Desarrollo Tecnológico (Mexico)
Joselín Hernández-Ruiz, Hospital General de México (Mexico)

Published in SPIE Proceedings Vol. 9609:
Infrared Sensors, Devices, and Applications V
Paul D. LeVan; Ashok K. Sood; Priyalal Wijewarnasuriya; Arvind I. D'Souza, Editor(s)

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