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Optical-thermal simulation of tonsillar tissue irradiation

โœ Scribed by Rahul K. Shah; Babak Nemati; Lihong V. Wang; Stanley M. Shapshay

Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
132 KB
Volume
28
Category
Article
ISSN
0196-8092

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โœฆ Synopsis

Abstract

Background and Objective

Despite laser applications targetted toward tonsillar tissue, there has been no characterization of underlying optical and thermal events during laser irradiation of tonsillar tissue.

Study Design/Materials and Methods

The optical properties of canine and human tonsils were determined at 805 nm (diode laser) and 1,064 nm (Nd:YAG laser). An opticalโ€thermal simulation was developed to predict the temperature rise in irradiated human tonsils.

Results

The optical properties of human and canine tonsillar tissue are similar at both wavelengths. The opticalโ€thermal simulation was validated and predicts that at 10 W and 1 minute of irradiation, the heat will be contained within the human tonsil. The diode laser causes more superficial heating than the Nd:YAG laser.

Conclusions

The safety of irradiating human tonsils was shown. The diode laser is superior to the Nd:YAG laser because less heat affects collateral structures. The opticalโ€thermal simulation detailed in this study can be used to predict the temperature rise in tissues undergoing irradiation. Lasers Surg. Med. 28:313โ€“319, 2001. ยฉ 2001 Wileyโ€Liss, Inc.

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