The approximation of particulate scattering coefficients in the determination of total ozone

1976 ◽  
Vol 102 (433) ◽  
pp. 667-673 ◽  
Author(s):  
R. E. Basher
Keyword(s):  
Total Ozone ◽  
Scattering Coefficients

scholarly journals Determination of the optical properties of bovine liver tissue using integrating sphere technique

2018 ◽  
Vol 1 (1) ◽  
pp. 248-252
Author(s):  
Halil Arslan ◽  
Yasar Baris Dolukan
Keyword(s):  
Optical Properties ◽  
Liver Tissue ◽  
Tissue Sample ◽  
Bovine Liver ◽  
Integrating Sphere ◽  
Scattering Coefficients ◽  
Single Sphere ◽  
Microscope Slides ◽  
Good Agreement

The optical properties (absorption and reduced scattering coefficients, µa and µs’) of bovine liver tissue for 635 nm has been determined by using integrating sphere and inverse adding-doubling (IAD) techniques. For this purpose, total reflectance and total transmittance values of bovine liver tissue sample, which is placed between two microscope slides, have been measured by using single-sphere system. The measured values have been used as input parameters for IAD program to extract the µa and µs’ of the sample. In this study, µa and µs’ of bovine liver tissue for 635 nm have been determined to be 0.22 mm-1 and 0.51mm-1, respectively. These values, which yield 1.44 mm penetration depth, are in good agreement with the ones in the literature.

scholarly journals Panel measurement method for the determination of scattering coefficients and edge diffraction in an open water tank

2020 ◽  
Vol 147 (2) ◽  
pp. 1104-1112
Author(s):  
Laetitia Roux ◽  
Monique Pouille ◽  
Christian Audoly ◽  
Anne-Christine Hladky
Keyword(s):  
Measurement Method ◽  
Open Water ◽  
Water Tank ◽  
Scattering Coefficients ◽  
Edge Diffraction

scholarly journals Ex Vivo Determination of Broadband Absorption and Effective Scattering Coefficients of Porcine Tissue

Photonics ◽  
2021 ◽  
Vol 8 (9) ◽  
pp. 365
Author(s):  
Florian Bergmann ◽  
Florian Foschum ◽  
Leonie Marzel ◽  
Alwin Kienle
Keyword(s):  
Ex Vivo ◽  
Precise Determination ◽  
Integrating Sphere ◽  
Sample Type ◽  
Roughness Effects ◽  
Broadband Absorption ◽  
Porcine Tissue ◽  
Scattering Coefficients ◽  
Novel Approach

A novel approach for precise determination of the optical scattering and absorption properties of porcine tissue using an optimized integrating sphere setup was applied. Measurements on several sample types (skin, muscle, adipose tissue, bone, cartilage, brain) in the spectral range between 400 nm and 1400 nm were performed. Due to the heterogeneity of biological samples, measurements on different individual animals as well as on different sections for each sample type were carried out. For all samples, we used an index matching method to reduce surface roughness effects and to prevent dehydration. The derived absorption spectra were used to estimate the concentration of important tissue chromophores such as water, oxy- and deoxyhemoglobin, collagen and fat.

scholarly journals Измерение оптических свойств десны и дентина человека в спектральном диапазоне 350–800 нм

2020 ◽  
Vol 20 (4) ◽  
pp. 258-267
Author(s):  
Alexey Andreevich Selifonov ◽  
◽  
Olga Anatolyevna Zyuryukina ◽  
Ekaterina Nikolaevna Lazareva ◽  
Julia Sergeevna Skibina ◽  
...  
Keyword(s):  
Optical Properties ◽  
Spectral Range ◽  
Photothermal Therapy ◽  
Diffuse Reflection ◽  
Biological Tissues ◽  
Transmission Spectra ◽  
Tissue Samples ◽  
Scattering Coefficients ◽  
Total Transmission

Knowledge of the optical properties of biological tissues is important for the development of optical diagnostics, photodynamic and photothermal therapy of various diseases. However, despite the significant number of works devoted to the determination of the optical properties of tissues, the optical properties of human gums and dentin remain currently poorly understood. In this work, we experimentally studied the optical properties of human gums and dentin in the spectral range from 350 nm to 800 nm. Basing on measured diffuse reflection and total transmission spectra and using the Inverse Adding Doubling (IAD) method, the spectral dependences of absorption and scattering coefficients of the studied tissue samples were calculated.

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