Results 201 to 210 of about 18,589,267 (236)
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Chinese Optics Letters, 2012
THz spectral properties of several of fresh animal tissues are investigated based on the time domain system. Terahertz pulse transmission spectra of different animal tissues slices with different thickness are obtained, and the refractive index, the absorption coefficient, and the extinction coefficient of these tissues are analyzed and discussed ...
Chengzhen Lu Chengzhen Lu +5 more
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THz spectral properties of several of fresh animal tissues are investigated based on the time domain system. Terahertz pulse transmission spectra of different animal tissues slices with different thickness are obtained, and the refractive index, the absorption coefficient, and the extinction coefficient of these tissues are analyzed and discussed ...
Chengzhen Lu Chengzhen Lu +5 more
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Far-infrared signature of animal tissues characterized by terahertz time-domain spectroscopy
Optics Communications, 2006We present terahertz time-domain spectroscopy characterization of various animal tissues obtained from pork and rats. As the sensitivity of terahertz radiation to polar molecules of water is very high, biological tissues with high level of hydration show strong absorption at terahertz frequencies.
Mingxia He +3 more
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A quantitative time-domain optical imager for small animals in vivo fluorescence studies
Biomedical Topical Meeting, 2004ART as developed a time-domain optical molecular imager that recovers size, position and concentration of fluorescent inclusions embedded in turbid media within 15-30% accuracy. Fluorescent lifetime also gives the capability to discriminate different fluorescent sources.
P. Gallant +6 more
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Studying human and animal skin optical properties by terahertz time-domain spectroscopy
Bulletin of the Russian Academy of Sciences: Physics, 2016Human and rat skin reflection spectra and the effect of glucose and glycerol on these spectra are studied in vivo by terahertz time-domain spectroscopy in the frequency range of 0.1–2.0 THz. Variations in skin optical properties proved to correlate with changes in the blood glucose level.
O. P. Cherkasova +5 more
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Time-domain fluorescence diffuse optical tomography for living animals by total-light algorithm
SPIE Proceedings, 2011We are reporting the first trial image reconstruction of a implanted fluorescent target into a live rat abdomen. We use a simplified algorithm for fluorescence diffuse optical tomography (FDOT), so-called the Total-light algorithm to obtain the absorption image of the target from the measured mean-transit time (MTT).
Goro Nishimura +4 more
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Time Domain Diffuse Fluorescence Tomography Can Increase Small-Animal Imaging Throughput
Biomedical Optics and 3-D Imaging, 2012Employing multiple time-bins in the image reconstruction of a time-domain fluorescence tomography dataset provides improved spatial resolution and contrast.
Robert W Holt +5 more
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The Journal of the Acoustical Society of America, 1996
Recent developments have made it possible to perform propagation calculations in realistic oceans to high frequencies. It is possible to deal with on the order of hundreds of modes rather quickly and by storing the frequency-domain field over some specified range over the water column and for a fine frequency mesh, it is possible by a new Fourier ...
Nataly A. Sidorovskaia, Michael F. Werby
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Recent developments have made it possible to perform propagation calculations in realistic oceans to high frequencies. It is possible to deal with on the order of hundreds of modes rather quickly and by storing the frequency-domain field over some specified range over the water column and for a fine frequency mesh, it is possible by a new Fourier ...
Nataly A. Sidorovskaia, Michael F. Werby
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Time domain optical molecular imaging of small animals in vivo
SPIE Proceedings, 2006The advent of optical molecular probes has taken optical imaging beyond approaches limited to intrinsic optical contrast mechanisms. Fluorophores are typically used as the source of contrast for optical molecular probes and the field of optical molecular imaging is concerned with measuring and quantifying their in vivo biodistribution and ...
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A time-domain non-contact fluorescence diffuse optical tomography scanner for small animal imaging
Biomedical Optics and 3-D Imaging, 2010We introduce a novel time-domain multi-view (over 360°) non-contact fluorescence diffuse optical tomography scanner for localizing fluorescent dyes in scattering media, eventually in small animals. Localization results of fluorescent inclusions in 3D are presented.
Yves Bérubé-Lauzière, Eric Lapointe
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2004, Ottawa, Canada August 1 - 4, 2004, 2004
Electromagnetic induction (EMI) mapping techniques have been demonstrated to be useful in monitoring seasonal soil-crop dynamics. These dynamics can be affected by many confounding seasonal changes in the soil profile. Time domain reflectometry (TDR) has been used to measure localized bulk soil electrical conductivity of soil horizons. The objective
null Bryan L. Woodbury +2 more
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Electromagnetic induction (EMI) mapping techniques have been demonstrated to be useful in monitoring seasonal soil-crop dynamics. These dynamics can be affected by many confounding seasonal changes in the soil profile. Time domain reflectometry (TDR) has been used to measure localized bulk soil electrical conductivity of soil horizons. The objective
null Bryan L. Woodbury +2 more
openaire +1 more source