Journal Article

Analytical solution of the Pennes equation for burn-depth determination from infrared thermographs

Ricardo Romero-Méndez, Joel N. Jiménez-Lozano, Mihir Sen and F. Javier González

in Mathematical Medicine and Biology: A Journal of the IMA

Published on behalf of Institute of Mathematics and its Applications

Volume 27, issue 1, pages 21-38
Published in print March 2010 | ISSN: 1477-8599
Published online July 2009 | e-ISSN: 1477-8602 | DOI: http://dx.doi.org/10.1093/imammb/dqp010
Analytical solution of the Pennes equation for burn-depth determination from infrared thermographs

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A serious problem in emergency medicine is the correct evaluation of skin burn depth to make the appropriate choice of treatment. In clinical practice, there is no difficulty in classifying first- and third-degree burns correctly. However, differentiation between the IIa (superficial dermal) and IIb (deep dermal) wounds is problematic even for experienced practitioners. In this work, the use of surface skin temperature for the determination of the depth of second-degree burns is explored. An analytical solution of the 3D Pennes steady-state equation is obtained assuming that the ratio between burn depth and the burn size is small. The inverse problem is posed in a search space consisting of geometrical parameters associated with the burned region. This space is searched to minimize the error between the analytical and experimental skin surface temperatures. The technique is greatly improved by using local one-dimensionality to provide the shape of the burned region. The feasibility of using this technique and thermography to determine skin burn depth is discussed.

Keywords: thermographs; Pennes equation; burns

Journal Article.  0 words. 

Subjects: Applied Mathematics ; Biomathematics and Statistics

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