Global ETD Search
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Showing 1 to 7 of 7 for “"photon migration"”.
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Wavelength tuneable frequency domain photon migration spectrometer for tissue-like media
… light launched into a turbid medium generates photon density fluctuations with wave like character that oscillates at the modulation frequency. These density fluctuations are named diffuse photon density waves, and it has been shown that the amplitude and phase of the photon density wave inside …
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Photon migration in turbid media : time-resolved optical imaging in tissue-like phantom
Thesis (Ph. D.)--Massachusetts Institute of Technology, Whitaker College of Health Sciences and Technology, 1996.
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Photon migration in highly scattering media as a measurement technique on automated cow milking systems
… study has been to determine the usefulness of photon migration techniques in the measurement of milk components, and the extent to which they can be applied. Online applications are also investigated. The milk components that influence the optical scattering properties the most are the fat …
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Quantitative frequency-domain fluorescence spectroscopy in tissues and tissue-like media
… the generation and propagation of fluorescence photons inside tissues and tissue-like media (i.e., scattering dominated media). The standard concepts of fluorescence spectroscopy have been incorporated into a diffusion-based picture that is sometimes referred to as photon migration. The novelty …
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Unraveling the puzzles of spectroscopy-based non-invasive blood glucose detection
… these variations, a novel method, based on the photon migration theory, is proposed. We demonstrate that the proposed method can extract intrinsic line shapes and intensity information from Raman spectra acquired in a turbid medium thereby improving quantitative predictions significantly. …
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Characterizing optical properties in fibrous tissues
Optical methods are promising for non-invasive tissue characterization. Biological tissues can be classified into isotropic tissues and anisotropic tissues. The optical properties of isotropic tissues such as adipose tissue are independent of measurement direction. However, optical properties of …
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Spatial localization and temporal analysis of optical property fluctuations by multiplexed near-infrared photon density waves in turbid media: In vitro and in vivo studies
In recent years the application of near infrared non-invasive methods for medical diagnostics and clinical studies has grown rapidly. The ease of use, low cost and portability of these methods is a clear advantage over other techniques such as MRI. The limitations in detection of optical property …