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Light reflection imaging technology for acquiring optical tissular parameters in large area and of microstructure

A technology of optical parameters and microstructures, applied in the fields of biomedical optics and remote sensing

Active Publication Date: 2016-02-03
WENZHOU MEDICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Several recently proposed empirical models for reflectivity at close source-detector distances have their own limitations

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  • Light reflection imaging technology for acquiring optical tissular parameters in large area and of microstructure
  • Light reflection imaging technology for acquiring optical tissular parameters in large area and of microstructure
  • Light reflection imaging technology for acquiring optical tissular parameters in large area and of microstructure

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Embodiment Construction

[0056] Embodiments of the present invention will be further described below in conjunction with accompanying drawings:

[0057] Put a collimated beam along the interface of z=0 Direction of incidence, through the forward peak scattering medium, the backscattering direction is light reflectivity. In such a medium, non-diffuse photons will only encounter a few large-angle scattering, and non-diffuse photons are divided into n-order non-diffuse photons according to the number n of large-angle scattering. Since first-order non-diffuse photons undergo multiple small-angle scatterings and one large-angle scattering, the main contribution can be described as using small-angle scattering approximations to a close-range form of radiative transport. First-order non-diffuse photons are called SAA photons. Second order non-diffuse photons are called snake photons ("snake" photons).

[0058] SAA photon backscattering is mainly determined by the spread of scattering angles in the forwa...

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Abstract

The invention provides a light reflection imaging technology for acquiring optical tissular parameters in a large area and of a microstructure. The light reflection imaging technology comprises a muddy medium reflectivity calculating method suitable for any space length and the whole space frequency domain and a method for obtaining medium optical parameters by measuring high and low space frequency muddy medium reflection and through obtained luminous reflectance through inversion. The inversion method can be a table look-up method or a formula fitting method. Measurement of muddy medium sub- diffused and diffused light reflectivity can be used for measuring the optical property of a muddy medium in a large area and the microstructure including a phase function and the like.

Description

technical field [0001] The invention provides a light reflection imaging technology for acquiring tissue optical parameters and microstructures in a large area, which can be used in the fields of biomedical optics, remote sensing and the like. Background technique [0002] Elastic scattering of light has long been used to analyze random media. Reflectance spectroscopy and imaging is a widely used non-invasive method to measure the optical properties of random media such as the atmosphere, oceans and tissues, including the absorption coefficient (μ a ) and reduced scattering coefficient (μ s '). These parameters can provide valuable information about the microstructure and biochemical composition of media, and have been applied in fields such as cloud remote sensing, monitoring cell apoptosis, skin characterization, and cancer detection. Since radiative transfer (radiative transfer-RT) describes the propagation of light in a random medium, the reflectance of scattered ligh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/47G01N21/55
CPCG01N21/4795A61B5/0059G01N21/4738A61B5/00G01N21/55A61B5/0075
Inventor 徐敏
Owner WENZHOU MEDICAL UNIV