✦ LIBER ✦

Optical modelling of light distributions in skin tissue following laser irradiation

✍ Scribed by Iain D. Miller; A. Roy Veitch

Publisher: John Wiley and Sons
Year: 1993
Tongue: English
Weight: 691 KB
Volume: 13
Category: Article
ISSN: 0196-8092
DOI: 10.1002/lsm.1900130512

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

A Monte‐Carlo method is used to compute light distributions in a multilayer skin model for variable width finite beams. By means of a 4‐layer skin model in which blood may be represented as a discrete layer, vascular lesions such as portwine stains may be studied. Light distributions and thermal profiles are simulated, representing the irradiation of a portwine stain using 577 nm and 585 nm wavelengths. Damage thresholds at 585 nm are found to substantially exceed those predicted at 577 nm, although the nature of the damage differs at the two wavelengths. Variations due to beam width are found to be unimportant if the diameter exceeds 1 mm. The predictions are compared with clinical results, and a novel 5‐layer approach based on new optical parameters is adopted to account for discrepancies in epidermal temperature. © 1993 Wiley‐Liss, Inc.

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