||ECE532 Biomedical Optics|
Steven L. Jacques, Scott A. Prahl
Oregon Graduate Institute
Scattering of light occurs in media which contains fluctuations in
the refractive index n, whether such
fluctuations are discrete particles or more continuous variations in n.
In biomedical optics, scattering of photons is an important
- Scattering provides feedback during therapy. For example, during laser
coagulation of tissues, the onset of scattering is an observable
endpoint that correlates with a desired therapeutic goal. Scattering
also strongly affects the dosimetry of light during therapeutic
procedures that depend on absorption. The scattering affects "where" the
absorption will occur.
- Scattering has diagnostic
value. Scattering depends on the ultrastructure of a tissue, eg., the
density of lipid membranes in the cells, the size of nuclei, the
presence of collagen fibers, the status of hydration in the tissue, etc.
Whether one measures the wavelength dependence of scattering, the
polarization dependence of scattering, the angular dependence of
scattering, the scattering of coherent light, scattering measurements
are an important diagnostic tool. Scattering is used for both
spectroscopic and imaging applications.
Optical Properties |
ECE 532 |
OGI Optics Courses |