Results 281 to 290 of about 9,268,617 (348)

Terahertz biophotonics as a tool for studies of dielectric and spectral properties of biological tissues and liquids

Progress in Quantum Electronics, 2018
In this review, we describe dielectric properties of biological tissues and liquids in the context of terahertz (THz) biophotonics. We discuss a model of the THz dielectric permittivity of water and water-containing media, which yields analysis of the ...
O. Smolyanskaya, N. Chernomyrdin, A. A. Konovko, K. Zaytsev, I. Ozheredov, O. Cherkasova, M. Nazarov, Jean-Paul Guillet, S. Kozlov, Yu.V. Kistenev, J. Coutaz, P. Mounaix, V. Vaks, J. Son, H. Cheon, V. Wallace, Y. Feldman, I. Popov, A. Yaroslavsky, A. Shkurinov, V. Tuchin   +20 more
semanticscholar   +1 more source

Ultrasonic Characterization of Biological Tissues

Journal of Biomechanical Engineering, 1985
Ultrasonic imaging has become increasingly important as a diagnostic tool in medicine because it is noninvasive and it can provide valuable information otherwise unattainable. However, at present, clinical interpretation of an ultrasonic image still mostly relies on recognition of boundaries and positional relationship of anatomical structures and a ...
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Biologic gels in tissue engineering

Clinics in Plastic Surgery, 2003
There are many different types of scaffold materials now available for tissue engineering applications. Hydrogels form one group of materials that have been used in a wide variety of applications. These hydrogels can be formed using natural materials, synthetic materials, or some combination of the two.
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Terahertz Imaging of Biological Tissues

2011
A reflective THz imaging system sensitive to small variations in water concentrations has been developed. Biological tissues such as skin, eyes and teeth were imaged to ascertain the systems response to tissue hydration. Difference in water concentrations translated to contrast in the THz images.
Priyamvada, Tewari, Zachary D, Taylor, David, Bennett, Rahul S, Singh, Martin O, Culjat, Colin P, Kealey, Jean Pierre, Hubschman, Shane, White, Alistair, Cochran, Elliott R, Brown, Warren S, Grundfest   +10 more
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Biological Tissue Response

2016
Loading rates applied to tissues can vary enormously, from that seen during normal walking, where strain rates are estimated to be in the range of 0.001 s−1, rising to 0.1 s−1 during downhill running [1]. The strain rates experienced by biological tissues during blast can be orders of magnitude higher, with an associated increase in the damage ...
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Reflection-mode continuous-wave 0.15λ-resolution terahertz solid immersion microscopy of soft biological tissues

Applied Physics Letters, 2018
We have developed a method of terahertz (THz) solid immersion (SI) microscopy for continuous-wave reflection-mode imaging of soft biological tissues with a sub-wavelength spatial resolution.
N. Chernomyrdin, A. Kucheryavenko, G. S. Kolontaeva, G. Katyba, I. Dolganova, P. Karalkin, D. Ponomarev, V. Kurlov, I. Reshetov, M. Skorobogatiy, V. V. Tuchin, K. Zaytsev   +11 more
semanticscholar   +1 more source

High-resolution reflectometry in biological tissues

Optics Letters, 1992
Optical low-coherence ref lectometry is applied for the first time to our knowledge to investigate diffusive biological tissues with a single-mode fiber probe. Samples of fresh arteries are studied, using the backscattered light from the tissue. The probed volume in the vicinity of the fiber tip is estimated to be below 6.7 x 10(-10) cm(3).
X, Clivaz, F, Marquis-Weible, R P, Salathé, R P, Novàk, H H, Gilgen   +4 more
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Gaussian beam spread in biological tissues

Applied Optics, 1990
Flux density distributions were measured in large tissue sections illuminated with 633- and 1064-nm laser radiation delivered by an optical fiber. The results were modeled by solving the 2-D diffusion approximation for an incident Gaussian beam and fitting the data with nonlinear regression.
L I, Grossweiner, J L, Karagiannes, P W, Johnson, Z, Zhang   +3 more
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Lipid peroxidation products in biological tissues

Free Radical Biology and Medicine, 1989
Over the past twenty-years of lipid peroxidation research in this laboratory, considerable effort has gone into development of new methods, with emphasis on measurement of lipid-soluble fluorophores and the volatile hydrocarbons ethane and pentane. Application of these and other methods has been made to biological materials and living animals. Although
C J, Dillard, A L, Tappel
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Endoscopic Polarization Imaging of Biological Tissues

Advances in Imaging, 2009
For the first time polarization images using an endoscopic technique are reported. Images based on the degree of polarization measurement allow to discriminate sound and degraded regions in a type I collagen sample.
Desroches, Jérôme, Pagnoux, Dominique, Louradour, Frédéric, Suran, Eric, Brevier, Julien, Barthélémy, Alain   +5 more
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