Journal ArticleDOI
A review of the optical properties of biological tissues
TLDR
The known optical properties (absorption, scattering, total attenuation, effective attenuation and/or anisotropy coefficients) of various biological tissues at a variety of wavelengths are reviewed in this article.Abstract:
The known optical properties (absorption, scattering, total attenuation, effective attenuation, and/or anisotropy coefficients) of various biological tissues at a variety of wavelengths are reviewed. The theoretical foundations for most experimental approaches are outlined. Relations between Kubelka-Munk parameters and transport coefficients are listed. The optical properties of aorta, liver, and muscle at 633 nm are discussed in detail. An extensive bibliography is provided. >read more
Citations
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Journal ArticleDOI
Changes in optical properties of rat cerebral cortical slices during oxygen glucose deprivation
TL;DR: Variations in the reduced scattering coefficients implied cell deformation mainly due to cell swelling, whereas those in the absorption spectra indicated reductions in heme aa(3) and CuA in cy tochrome c oxidase and cytochrome c.
Journal ArticleDOI
Generation of singlet oxygen by persistent luminescent nanoparticle-photosensitizer conjugates: a proof of principle for photodynamic therapy without light
TL;DR: It is demonstrated that the phenomenon of persistent luminescence which is delayed emission from certain metal ion excited states, while crystal defects acting as energy traps, can provide an alternative excitation possibility in the face of limited penetration of light through the mammalian tissues.
Journal ArticleDOI
A liquid optical phantom with tissue-like heterogeneities for confocal microscopy
TL;DR: This phantom is specifically designed to characterize a reflectance-based dual-axis confocal (DAC) microscope for skin imaging and mimics the scattering properties of normal human epithelial tissue in terms of an effective scattering coefficient and a depth-dependent degradation in spatial resolution.
Journal ArticleDOI
Depth selective acousto-optic flow measurement
Adi Tsalach,Zeev Schiffer,Eliahu Ratner,Ilan Breskin,Reuven Zeitak,Revital Pery Shechter,Michal Balberg +6 more
TL;DR: Spectral analysis of phase-coded light signals, tagged by specific ultrasound patterns, enables differentiation of flow patterns at different depths, suggesting that signal contamination originating from extra-cerebral tissue may be eliminated using spectral analysis of ultrasonically tagged light.
Journal ArticleDOI
Iterative image reconstruction in transcranial photoacoustic tomography based on the elastic wave equation.
TL;DR: An optimization-based image reconstruction method for 3D transcranial PACT is developed based on the elastic wave equation that combines a forward-adjoint operator pair based on a finite-difference time-domain discretization of the elasticWave equation to compute penalized least squares estimates of the initial pressure distribution.
References
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Journal ArticleDOI
The Optics of Human Skin
R. Rox Anderson,John A. Parrish +1 more
TL;DR: An integrated review of the transfer of optical radiation into human skin is presented, aimed at developing useful models for photomedicine.
Journal ArticleDOI
New contributions to the optics of intensely light-scattering materials.
TL;DR: In this paper, the Gurevic and Judd formulas were derived from the Kubelka-Munk differential equations, and they are exact under the same conditions as in this paper, that is, when the material is perfectly dull and when the light, is perfectly diffused or if it is parallel and hits the specimen under an angle of 60° from normal.
Journal ArticleDOI
Time resolved reflectance and transmittance for the non-invasive measurement of tissue optical properties.
TL;DR: A simple model is developed, based on the diffusion approximation to radiative transfer theory, which yields analytic expressions for the pulse shape in terms of the interaction coefficients of a homogeneous slab.
Journal ArticleDOI
The delta-Eddington approximation for radiative flux transfer
TL;DR: In this paper, the delta-Eddington approximation was used to calculate monochromatic radiative fluxes in an absorbing-scattering atmosphere, by combining a Dirac delta function and a two-term approximation, which overcomes the poor accuracy of the Eddington approximation for highly asymmetric phase functions.