Dosimetry for laser treatment of port-wine stains

Lars Othar Svaasand; Martin J. C. van Gemert; Wim Verkruysse; Elisanne Janne Fiskerstrand; L. T. Norvang

doi:10.1117/12.350034

14 June 1999 Dosimetry for laser treatment of port-wine stains

Lars Othar Svaasand, Martin J. C. van Gemert, Wim Verkruysse, Elisanne Janne Fiskerstrand, L. T. Norvang

Author Affiliations +

Proceedings Volume 3601, Laser-Tissue Interaction X: Photochemical, Photothermal, and Photomechanical; (1999) https://doi.org/10.1117/12.350034
Event: BiOS '99 International Biomedical Optics Symposium, 1999, San Jose, CA, United States

Abstract

The presently most promising treatment modality for port wine stains is selective photothermolysis. This technique is based on exposure of the lesion to yellow laser light of high energy density and long pulse-length, typically 5 - 10 J/cm² and 0.5 ms, respectively. Although promising clinical results have been reported, only a small percentage of the patients obtains full fading of their lesions. This might in part be due to the fact that most clinicians treat port wine stains with rather standardized settings of the laser parameters. However, clinical response can, hopefully, be improved if these setting are adjusted to each individual lesion. This paper gives a brief discussion of the importance of parameters such as depth, diameter and vessel wall thickness, together with a presentation of non-invasive methods for determination of these values.

Citation Download Citation

Lars Othar Svaasand, Martin J. C. van Gemert, Wim Verkruysse, Elisanne Janne Fiskerstrand, and L. T. Norvang "Dosimetry for laser treatment of port-wine stains", Proc. SPIE 3601, Laser-Tissue Interaction X: Photochemical, Photothermal, and Photomechanical, (14 June 1999); https://doi.org/10.1117/12.350034

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