✦ LIBER ✦

Optimal parameters for laser treatment of leg telangiectasia

✍ Scribed by Kienle, Alwin; Hibst, Raimund

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 242 KB
Volume: 20
Category: Article
ISSN: 0196-8092
DOI: 10.1002/(sici)1096-9101(1997)20:3<346::aid-lsm14>3.0.co;2-b

No coin nor oath required. For personal study only.

✦ Synopsis

Background and Objective:

The optimal parameters for treatment of leg telangiectasia with a pulsed laser are investigated.

Study Design/Materials and Methods:

The Monte Carlo method is used to calculate the light penetration and absorption in the epidermis, dermis, and the ectatic blood vessel. Calculations are made for different diameters and depths of the vessel in the dermis. In addition, the oxygen saturation of the blood vessel, the laser beam diameter, and the laser irradiation profile is varied. Results: It is found that for vessels with diameters between 0.3 mm and 0.5 mm wavelengths about 600 nm are optimal to achieve selective photothermolysis for the considered damage model. It is also shown that an elliptical laser beam area has advantages compared to a circular beam area for treatment of leg telangiectasia. Conclusions: We recommend the treatment of leg telangiectasia with dye laser wavelengths longer than the normally used 577 nm and 585 nm.

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