Results 111 to 120 of about 92,236 (147)

Far-infrared signature of animal tissues characterized by terahertz time-domain spectroscopy

Optics Communications, 2006
We 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, Abul K. Azad, Shenghua Ye, Weili Zhang   +3 more
openaire   +1 more source

A quantitative time-domain optical imager for small animals in vivo fluorescence studies

Biomedical Topical Meeting, 2004
ART 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, A. Belenkov, G. Ma, F. Lesage, Y. Wang, D. Hall, L. McIntosh   +6 more
openaire   +1 more source

Time-domain fluorescence diffuse optical tomography for living animals by total-light algorithm

SPIE Proceedings, 2011
We 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, Kamlesh Awasthi, Kitsakorn Locharoenrat, Shinpei Okawa, Yukio Yamada   +4 more
openaire   +1 more source

A time-domain non-contact fluorescence diffuse optical tomography scanner for small animal imaging

Biomedical Optics and 3-D Imaging, 2010
We 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
openaire   +1 more source

Volumetric Doppler imaging of small animal brain using spectral and time domain optical coherence tomography

SPIE Proceedings, 2011
In this paper we demonstrate applicability of Optical Coherence Tomography (OCT) for three-dimensional analysis of blood flow in brain of small animals. We proposed scanning protocols that enable receiving both qualitative and quantitative information about flow.
Danuta Bukowska, Ireneusz Grulkowski, Grzegorz Wilczynski, Szymon Tamborski, Daniel Ruminski, Jakub Wlodarczyk, Daniel Szlag, Maciej Szkulmowski, Andrzej Kowalczyk, Maciej Wojtkowski   +9 more
openaire   +1 more source

Analysis on the characteristics of animal tissues based on the Terahertz time domain spectroscopy system

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, Chen Liu Chen Liu, Erliang Cui Erliang Cui, Jia Li Jia Li, Wei Liu Wei Liu, Ping Sun Ping Sun   +5 more
openaire   +1 more source

Time domain optical molecular imaging of small animals in vivo

SPIE Proceedings, 2006
The 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 ...
openaire   +1 more source

Animations of acoustical pulse (time-domain) signal propagation in a realistic waveguide to high frequencies.

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
openaire   +1 more source

Facilitating the understanding of RF circuits through time-domain simulations and animations

2012 42nd European Microwave Conference, 2012
This paper explores new ways of introducing students to the fundamental concepts of RF and Microwave Engineering with the aid of simulation tools and animations. It highlights the importance of enabling students to ‘fiddle’ with their RF circuits, by means of an RF simulator, to gain a better understanding of the subject.
openaire   +1 more source

Using Time Domain Reflectometry for Evaluating Near-SurfaceSoil-Crop Dynamics of an Animal Waste Amended Soil

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, null John A. Nienaber, null Roger A. Eigenberg   +2 more
openaire   +1 more source