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Proceedings Paper

Uniform light distribution in hollow organs by means of backscattering layers
Author(s): Wolfgang Beyer; Reinhold Baumgartner; Christian Ell; Armin Heinze; Dieter Jocham; Ronald Sroka; Herbert G. Stepp; Eberhard Unsoeld
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Paper Abstract

The uniform distribution of light over the area to be photodynamically treated is one of the prerequisites for a successful tumor therapy. For homogenization of laser light distributions especially in hollow organs a new method has been developed. It applies fiber coupled emitters in combination with a highly backscattering layer deposited on the inner wall of the organ to be irradiated. The effect of homogenization by means of this layer has been calculated for spherical and cylindrical hollow organs and compared with experimental results. This method also seems to be applicable for organs with irregular geometry. Laser light applications for different medical fields will be described. Applying the same method, isotropic light detectors with diameters of less than 1 mm have been developed for irradiation control during photodynamic treatment or for determination of light distributions in tissue.

Paper Details

Date Published: 1 July 1990
PDF: 6 pages
Proc. SPIE 1201, Optical Fibers in Medicine V, (1 July 1990); doi: 10.1117/12.17549
Show Author Affiliations
Wolfgang Beyer, GSF-Zentrales Laserlaboratorium and Univ. Muenchen (Germany)
Reinhold Baumgartner, GSF-Zentrales Laserlaboratorium and Univ. Muenchen (Germany)
Christian Ell, Univ. Erlangen-Nuernberg (Germany)
Armin Heinze, GSF-Zentrales Laserlaboratorium and Univ. Muenster (Germany)
Dieter Jocham, Univ. Muenchen (Germany)
Ronald Sroka, GSF-Zentrales Laserlaboratorium and Univ. Erlangen-Nuernberg (Germany)
Herbert G. Stepp, GSF-Zentrales Laserlaboratorium (Germany)
Eberhard Unsoeld, GSF-Zentrales Laserlaboratorium (Germany)


Published in SPIE Proceedings Vol. 1201:
Optical Fibers in Medicine V
Abraham Katzir, Editor(s)

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