Laser tissue interaction modeling for treatment planning of port-wine stain

Author

Shafirstein, G. ; Baumle, W. ; Lapido, M. ; Ferguson, S. ; North, P.E. ; Waner, M.

Author_Institution

Center for Vascular Anomalies, Arkansas Children´´s Hospital, AR, USA

Volume

1

fYear

2003

fDate

27-28 Oct. 2003

Firstpage

313

Abstract

Finite element method is used to solve the diffusion equations of light and heat simultaneously, to calculate the temperature field in laser tissue interaction. The model suggests that a wavelength of 585 nm and continuous pulse of 0.45 ms with energy density of at least 6 Jcm^-2 are recommended for effective flashlamp pulsed dye laser treatment of port-wine stains. The model predicts that vessel smaller than 20 μm will be spared and vessels larger than 200 μm in diameter will be partially coagulated. These results agreed with previously published pathological examination.

Keywords

bio-optics; blood vessels; coagulation; diffusion; finite element analysis; high-speed optical techniques; hyperthermia; laser applications in medicine; photodynamic therapy; physiological models; skin; 0.45 ms; 585 nm; diffusion equations; finite element method; flashlamp pulsed dye laser treatment; laser tissue interaction; pathological examination; port-wine stain; treatment planning; Blood; Dermis; Epidermis; Equations; Laser modes; Lesions; Mathematical model; Optical pulses; Skin; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Society, 2003. LEOS 2003. The 16th Annual Meeting of the IEEE

ISSN

1092-8081

Print_ISBN

0-7803-7888-1

Type

conf

DOI

10.1109/LEOS.2003.1251764

Filename

1251764