Detection of inhomogeneities with ultrasound tagging of light

Ultrasound modulated light for optical tomography is very useful, since it can provide three-dimensional data with minimal mathematical processing. Although several experimental studies have shown the potential of this method, the link between the ultrasound location and the modulated signal intensi...

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Bibliographic Details
Published inJournal of the Optical Society of America. A, Optics, image science, and vision Vol. 18; no. 8; p. 1962
Main Authors Granot, E, Lev, A, Kotler, Z, Sfez, B G, Taitelbaum, H
Format Journal Article
LanguageEnglish
Published United States 01.08.2001
Subjects
Computer Simulation
Light
Models, Theoretical
Photons
Ultrasonography
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Summary:Ultrasound modulated light for optical tomography is very useful, since it can provide three-dimensional data with minimal mathematical processing. Although several experimental studies have shown the potential of this method, the link between the ultrasound location and the modulated signal intensity at the detector is not yet fully understood. We derive an analytical formula relating the position of the ultrasound transducer and the optical signal at the detector. We also derive an expression for the signal-to-shot-noise ratio as a function of the transducer position. We show that in certain conditions this ratio is only slowly decreasing as a function of the light penetration depth, which makes this technique attractive for optical tomography.
ISSN:1084-7529
DOI:10.1364/JOSAA.18.001962