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Proceedings Paper

Study of the thermal distribution in vocal cords irradiated by an optical source for the treatment of voice disabilities
Author(s): José L. Arce-Diego; Félix Fanjul-Vélez; Alfonso Borragán-Torre
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Paper Abstract

Vocal cords disorders constitute an important problem for people suffering from them. Particularly the reduction of mucosal wave movement is not appropriately treated by conventional therapies, like drugs administration or surgery. In this work, an alternative therapy, consisting in controlled temperature increases by means of optical sources is proposed. The distribution of heat inside vocal cords when an optical source illuminates them is studied. Optical and thermal properties of tissue are discussed, as a basis for the appropriate knowledge of its behaviour. Propagation of light is shown using the Radiation Transfer Theory (RTT) and a numerical Monte Carlo model. A thermal transfer model, that uses the results of the propagation of radiation, determines the distribution of temperature in the tissue. Two widely used lasers are considered, Nd:YAG (1064 nm) and KTP (532 nm). Adequate amounts of radiation, resulting in temperature rise, must be achieved in order to avoid damage in vocal cords and so to assure an improvement in the vocal functions of the patient. The limits in temperature should be considered with a combined temperature-time and Arrhenius analysis.

Paper Details

Date Published: 22 February 2006
PDF: 11 pages
Proc. SPIE 6078, Photonic Therapeutics and Diagnostics II, 60781H (22 February 2006); doi: 10.1117/12.644746
Show Author Affiliations
José L. Arce-Diego, Univ. of Cantabria (Spain)
Félix Fanjul-Vélez, Univ. of Cantabria (Spain)
Alfonso Borragán-Torre, Ctr. de Foniatría y Logopedia (Spain)

Published in SPIE Proceedings Vol. 6078:
Photonic Therapeutics and Diagnostics II
Kenton W. Gregory; Nikiforos Kollias; Reza S. Malek; Michael D. Lucroy; Henry Hirschberg; Brian Jet-Fei Wong; Eugene A. Trowers; Werner T.W. de Riese; Justus F. R. Ilgner; Steen J. Madsen; Lloyd P. Tate; Haishan Zeng; Guillermo J. Tearney; Bernard Choi, Editor(s)

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