Near-infrared optical properties of ex-vivo human skin and subcutaneous tissues using reflectance and transmittance measurements

1997 ◽  
Author(s):  
Rebecca Simpson ◽  
Jan G. Laufer ◽  
Matthias Kohl-Bareis ◽  
Matthias Essenpreis ◽  
Mark Cope
Keyword(s):  
Optical Properties ◽  
Human Skin ◽  
Near Infrared ◽  
Ex Vivo ◽  
Subcutaneous Tissues ◽  
Infrared Optical Properties

Effects of the Menstrual Cycle on the Red and Near-infrared Optical Properties of the Human Breast ¶

2000 ◽  
Vol 72 (3) ◽  
pp. 383-391 ◽  
Author(s):  
Rinaldo Cubeddu ◽  
Cosimo D'Andrea ◽  
Antonio Pifferi ◽  
Paola Taroni ◽  
Alessandro Torricelli ◽  
...  
Keyword(s):  
Optical Properties ◽  
Menstrual Cycle ◽  
Near Infrared ◽  
Human Breast ◽  
Infrared Optical Properties

scholarly journals Impact of optical clearing on ex vivo human skin optical properties characterized by spatially resolved multimodal spectroscopy

2021 ◽  
Author(s):  
Sergey M. Zaytsev ◽  
Marine Amouroux ◽  
Grégoire Khairallah ◽  
Alexey N. Bashkatov ◽  
Valery V. Tuchin ◽  
...  
Keyword(s):  
Optical Properties ◽  
Human Skin ◽  
Ex Vivo ◽  
Optical Clearing ◽  
Spatially Resolved

Near-Infrared Optical Properties and Charge Transport in Expanded Porphyrins

2021 ◽  
Vol MA2021-01 (16) ◽  
pp. 761-761
Author(s):  
Gloria Cardenas-Jiron ◽  
Merlys Borges-Martinez ◽  
Nicolas Montenegro-Pohlhammer ◽  
Yoh Yamamoto ◽  
Tunna Baruah ◽  
...  
Keyword(s):  
Optical Properties ◽  
Charge Transport ◽  
Near Infrared ◽  
Expanded Porphyrins ◽  
Infrared Optical Properties

Transport and near‐infrared optical properties of ErSi2thin films

1992 ◽  
Vol 72 (9) ◽  
pp. 4295-4299 ◽  
Author(s):  
I. Sagnes ◽  
G. Vincent ◽  
P. A. Badoz
Keyword(s):  
Optical Properties ◽  
Near Infrared ◽  
Infrared Optical Properties

Optical properties of normal and cancerous human skin in the visible and near-infrared spectral range

2006 ◽  
Vol 11 (6) ◽  
pp. 064026 ◽  
Author(s):  
Elena Salomatina ◽  
Brian Jiang ◽  
John Novak ◽  
Anna N. Yaroslavsky
Keyword(s):  
Optical Properties ◽  
Human Skin ◽  
Spectral Range ◽  
Near Infrared ◽  
Infrared Spectral Range ◽  
Infrared Spectral

scholarly journals Spectral Optical Properties of Rabbit Brain Cortex Between 200 and 1000 nm

2021 ◽  
Author(s):  
Tânia Gonçalves ◽  
Inês Soraia Martins ◽  
Hugo Silva ◽  
Valery Tuchin ◽  
Luís Oliveira
Keyword(s):  
Optical Properties ◽  
Spectral Range ◽  
Brain Cortex ◽  
Near Infrared ◽  
Ex Vivo ◽  
Biological Tissues ◽  
Rabbit Brain ◽  
Rabbit Brain Cortex ◽  
Infrared Spectral ◽  
The Brain

The knowledge of the optical properties of biological tissues in a wide spectral range is highly important for the development of noninvasive diagnostic or treatment procedures. The absorption coefficient is one of those properties, from which various information about tissue components can be retrieved. Using transmittance and reflectance spectral measurements acquired from ex vivo rabbit brain cortex samples, allowed to calculate its optical properties in the ultraviolet to the near infrared spectral range. Melanin and lipofuscin, the two pigments that are related to the ageing of tissues and cells were identified in the cortex absorption. By subtracting the absorption of these pigments from the absorption of the brain cortex, it was possible to evaluate the true ratios for the DNA/RNA and hemoglobin bands in the cortex – 12.33 fold (at 260 nm), 12.02 fold (at 411 nm) and 4.47 fold (at 555 nm). Due to the fact that the accumulation of melanin and lipofuscin increases with the ageing of the brain tissues and are related to the degeneration of neurons and their death, further studies should be performed to evaluate the evolution of pigment accumulation in the brain to prevent the development of Alzheimer, Parkinson and stroke pathologies in the brain.

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