Influence of pulsewidth on the efficiency of pulsed dye laser (PDL) treatment of port-wine stains

Hartmut Strempel; Guy Klein

doi:10.1117/12.260684

3 December 1996 Influence of pulsewidth on the efficiency of pulsed dye laser (PDL) treatment of port-wine stains

Hartmut Strempel, Guy Klein

Proceedings Volume 2922, Laser Applications in Medicine and Dentistry; (1996) https://doi.org/10.1117/12.260684
Event: BiOS Europe '96, 1996, Vienna, Austria

Abstract

In order to destroy selectively cutaneous vessels with a dye laser, the exposition time has to be shorter than the thermal relaxation time of the target tissue. Within this frame of time longer pulses are found to be more efficient in bleaching portwine stains than shorter ones. Two pulses of different length but with identical power density are compared in their therapeutical efficiency by means of reflectometry. There were no relevant differences neither in terms of lightness, redness nor in yellowness. If the increment and the irradiance is the same, a pulse stretching form 200 microsecond(s) to 260 microsecond(s) does not influence decisively the therapeutical effect in portwine stains.

Citation Download Citation

Hartmut Strempel and Guy Klein "Influence of pulsewidth on the efficiency of pulsed dye laser (PDL) treatment of port-wine stains", Proc. SPIE 2922, Laser Applications in Medicine and Dentistry, (3 December 1996); https://doi.org/10.1117/12.260684

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