Einführung in die gewebeoptik und optische dosimetrie

Translated title of the contribution: Introduction to tissue optics and optical dosimetry

J. Eichler, Beop Min Kim

Research output: Contribution to journalArticlepeer-review


The spatial distribution of radiation during medical laser application is determined by the characteristics of the beam (power, time, beam geometry) and the optical properties of the tissue. The irradiance E (in W/m2) describes the primary laser beam. Scattered radiation, in turn, is taken into account by the fluence rate φ (also in W/m2). The basic parameters of tissue optics are the absorption coefficient μa, the scattering coefficient μs and the anisotropy factor g. In addition, derived parameters are also used, i. e., total attenuation coefficient μt, reduced scattering coefficient μs′, effective attenuation coefficient μeff, mean free path of a photon d and penetration depth δ. Further tissue properties are the diffuse reflectance Rd and the back-scattering factor k. In an one-dimensional model the fluence rate φ in tissue is a nearly exponential function characterized by the penetration depth δ. At the tissue surface, the relationship exists φ=kE. This model is compared with the results of a computer program based on the finite element method.

Translated title of the contributionIntroduction to tissue optics and optical dosimetry
Original languageGerman
Pages (from-to)195-200
Number of pages6
JournalZeitschrift fur Medizinische Physik
Issue number3
Publication statusPublished - 2001
Externally publishedYes


  • Laser medicine
  • Optical dosimetry
  • Optics
  • Tissue

ASJC Scopus subject areas

  • Biophysics
  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging


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