The Role of Skin Optics in Diagnostic and Therapeutic Uses of Lasers
Light must penetrate the skin before it can exert therapeutic effect or offer diagnostic information. Laser radiation will penetrate some tissues better than others due to variation in tissue optical properties. Skin is a particularly difficult tissue to penetrate because of the strong scattering properties of the dermis. Fortunately, skin is a relatively thin tissue, and the shallow penetration of light is sufficient for strong interaction with the epidermis and upper dermis. The availability of the skin surface for topical irradiation makes the use of lasers in dermatology an attractive modality.
KeywordsVenous Plexus Light Distribution Melanin Content Basal Cell Layer Blood Content
Unable to display preview. Download preview PDF.
- 2.Jacques SL, CA Alter, SA Prahl: Angular dependence of HeNe laser light scattering by human dermis. Lasers in the Life Sciences 1: 309–334, 1987Google Scholar
- 3.Zrakit D: unpublished Masters report, Massachusetts Institute of Technology, 1986.Google Scholar
- 4.Prahl SA: Light transport in tissue. PhD Dissertation, University of Texas at Austin, 1988.Google Scholar
- 11.Anderson RR, JA Parrish: Optical properties of human skin, in The Science of Photomedicine. eds. JD Regan, JA Parrish, Plenum Press, 1982.Google Scholar
- 12.Saidi IS, SL Jacques, FK Tittel: Monitoring neonatal bilirubinemia using an “optical Patch”. SPIE Conference Proceedings. Vol. 1201-81, Los Angeles, 1990.Google Scholar
- 13.Keijzer M, SL Jacques, SA Prahl, AJ Welch: Light distributions in artery tissue: Monte Carlo simulations for finite-diameter laser beams. Lasers Surg Med 9: 148–154, 1989Google Scholar
- 14.Prahl SA, M Keijzer, SL Jacques, AJ Welch: A Monte Carlo model of light propagation in tissue. In Dosimetry of Laser Radiation in Medicine and Biology. SPIE Institute Series Vol. IS5:102–111, 1989.Google Scholar