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Neurosurgical guidance with diffuse reflectance spectroscopy
2021 Photonics North (PN), 2021Diffuse reflectance spectroscopy (or DRS) is a technique where the absorption and scattering characteristics of a given material are inferred from the reflectes spectra, typically in the visible and near-infrared regions. It has been used to study biological tissue in a wide range of studies from cancer detection to neurovasculature dynamics.
Pegah Eslami +4 more
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Influence of probe pressure on human skin diffuse reflectance spectroscopy measurements [PDF]
Optical Memory and Neural Networks (Information Optics), 2009 In a routine procedure for collecting human skin spectra using fiber optic diffuse reflectance spectroscopy, the fiber optic probe is put gently in contact with the skin surface.
JORGE CASTRO RAMOS +4 more
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Evaluation of emulsion stability by diffuse reflectance spectroscopy
Journal of Pharmaceutical Sciences, 1976A new method is described for evaluating the stability of emulsion bases and active components contained within such emulsions. Diffuse reflectance spectroscopy (DRS) is a technique that has the capability of detecting changes in particle size, surface properties, or drug quality of emulsions as a function of time without disturbance of the system ...
M J, Akers, J L, Lach
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Diffuse reflectance spectroscopy of fibrous proteins
Amino Acids, 2012UV-visible diffuse reflectance (DR) spectra of the fibrous proteins wool and feather keratin, silk fibroin and bovine skin collagen are presented. Natural wool contains much higher levels of visible chromophores across the whole visible range (700-400 nm) than the other proteins and only those above 450 nm are effectively removed by bleaching.
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Non-contact Quantitative Diffuse Reflectance Spectroscopy
Diffuse Optical Imaging V, 2015We validate a non-contact Diffuse Reflectance Spectroscopy (DRS) system as a first stage to approach quantitative multi-spectral imaging technique. The non-contact DRS system with separated illumination and detection paths was developed with different progressive set-ups which were all compared to a well-founded contact DRS system.
Veronica Sorgato +8 more
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Diffuse reflectance spectroscopy of liver tissue
SPIE Proceedings, 2015Diffuse reflectance spectroscopy (DRS) with a fiber-optic contact probe is a cost-effective, rapid, and non-invasive optical method used to extract diagnosis information of tissue. By combining commercially available VIS- and NIR-spectrometers with various fiber-optic contact-probes, we have access to the full wavelength range from around 400 to 1600 ...
Nina Reistad +4 more
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Diffuse reflectance spectroscopy in dental caries detection and classification
Signal, Image and Video Processing, 2020Machine learning and augmented reality form very important computational tools in biomedicine, neurology and stomatology as well. The present paper is devoted to a novel method of spectroscopic detection of caries lesions that changes the optical properties of the affected tissue.
Jindrich Charvát +4 more
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Applied Spectroscopy, 2010
Laser-induced autofluorescence (LIAF) and diffuse reflection spectroscopy (DRS) are two emerging noninvasive optical tools that have shown immense potential to detect oral cavity pre-cancer. In a recent study, we have used spectral ratio reference standards (SRRS) of LIAF intensity ratios F500/F635, F500/F685, and F500/F705 for grading of tissues ...
Rupananda Jayachandra, Mallia +7 more
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Laser-induced autofluorescence (LIAF) and diffuse reflection spectroscopy (DRS) are two emerging noninvasive optical tools that have shown immense potential to detect oral cavity pre-cancer. In a recent study, we have used spectral ratio reference standards (SRRS) of LIAF intensity ratios F500/F635, F500/F685, and F500/F705 for grading of tissues ...
Rupananda Jayachandra, Mallia +7 more
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Extraction of diffuse reflection spectrum on reflectance spectroscopy for solid or powder surfaces
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2000Reflectance spectroscopy usually produces distorted spectra because it is arbitrarily composed of two different types of reflectance, specular reflectance and diffuse reflectance. That is why this has been an annoying problem for reflectance spectroscopists.
M, Kaihara, Y, Sato
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Diffuse reflectance spectroscopy for the measurement of tissue oxygen saturation
Physiological Measurement, 2015Tissue oxygen saturation (StO2) is a useful parameter for medical applications. A spectroscopic method has been developed to detect pathologic tissues, due to a lack of normal blood circulation, by measuring StO2. In this study, human blood samples with different levels of oxygen saturation have been prepared and spectra were acquired using an optical ...
Sircan-Kucuksayan, A. +2 more
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