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Addis Ababa University Libraries Electronic Thesis and Dissertations: AAU-ETD! >
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http://hdl.handle.net/123456789/2515
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| Title: | MODELLING OF SCATTERING AND ABSORPTION BY PHANTOM TISSUE |
| Authors: | TILAHUN, ABEBE |
| Advisors: | Prof.A.V. GHOLAP |
| Keywords: | PHANTOM TISSUE |
| Copyright: | |
| Date Added: | 4-May-2012 |
| Publisher: | AAU |
| Abstract: | This project presents the technique and method of modelling of scattering and absorption
by phantom tissue. Absorption and scattering are two fundamental optical properties for
turbid biological media. In a homogeneous world, light propagates as a ray; along a
straight line with constant speed.
Turbid media are the opposite of homogeneous media; a dense concentration of par
ticles causes random inhomogeneities that scatter and prevent a straight propagation of
light.
The sample with high transmittance is high scattering and a higher optical absorption
is less affected by scattering. Through data analysis,the results was determined through
the diffusion approximation of Radiation Transport Equation Finally from Laser light
scattering, scattering and absorption coefficient was described below.
For bora milk and skimmed milk ( μs = 0.562, 0.364), (μs = 3.527, 2.042) and (g =
0.86, 0.84) respectively. And the value of absorption coefficient is zero.
From this result we conclude that scattering dominates on absorption. This is due to high
suspension of fat globules in milk which results high scattering. |
| URI: | http://hdl.handle.net/123456789/2515 |
| Appears in: | Thesis - Physics
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