Abstract
We study frequency-domain spectroscopy for reflectance measurements in two-layered tissues, using a random-walk model of photon migration. We study the phase shift of the reflected light as a function of the source-detector separation, and show that there can be as many as three different types of behavior of this quantity, depending on the relation between the modulated frequency and the absorptivities of both layers. As a result, the possibility of determining the absorptivities of the two layers and the upper layer thickness from the phase shift is different in each regime.
Original language | English |
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Title of host publication | Biomedical Optical Spectroscopy and Diagnostics, BOSD 1996 |
Publisher | Optica Publishing Group (formerly OSA) |
Pages | 101-104 |
Number of pages | 4 |
ISBN (Electronic) | 1557524270 |
State | Published - 1996 |
Event | Biomedical Optical Spectroscopy and Diagnostics, BOSD 1996 - Orlando, United States Duration: 1 Jan 1996 → 18 Mar 1996 |
Publication series
Name | Optics InfoBase Conference Papers |
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ISSN (Electronic) | 2162-2701 |
Conference
Conference | Biomedical Optical Spectroscopy and Diagnostics, BOSD 1996 |
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Country/Territory | United States |
City | Orlando |
Period | 1/01/96 → 18/03/96 |
Bibliographical note
Publisher Copyright:© 1996 Optical Society of America.
Funding
This research is funded by the Israel Cancer Association through the estate of the late Yvonne Heymann.
Funders | Funder number |
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Israel Cancer Association |
Keywords
- Frequency-domain
- Layered tissues
- Light propagation in tissues
- Optical diagnostics for medicine
- Phase shift
- Random-walk