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Lasers in Medical Science
Published in: Lasers in Medical Science 3/2014

01-05-2014 | Original Article

Thermal relaxation times: an outdated concept in photothermal treatments

Authors: M. J. Murphy, P. A. Torstensson

Published in: Lasers in Medical Science | Issue 3/2014

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Abstract

Thermal relaxation times were introduced into modern skin-laser science with the inception of selective photothermolysis. As a result, laser pulsewidths were determined according to the thermal relaxation times of the tissue targets. The Arrhenius Damage Integral shows that this approach is incorrect. The important parameter is the time required to induce irreversible protein denaturation within the target. This time is determined by the tissue’s intrinsic structure, not its physical dimensions. This report explains why thermal relaxation times should not be considered when treating many skin conditions with lasers or IPL systems.
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Metadata
Title
Thermal relaxation times: an outdated concept in photothermal treatments
Authors
M. J. Murphy
P. A. Torstensson
Publication date
01-05-2014
Publisher
Springer London
Published in
Lasers in Medical Science / Issue 3/2014
Print ISSN: 0268-8921
Electronic ISSN: 1435-604X
DOI
https://doi.org/10.1007/s10103-013-1445-8

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