Results 241 to 250 of about 178,073 (293)

Feasibility of ultra-low flow rate coronary CT angiography using photon-counting detector CT: a prospective randomized trial. [PDF]

Eur Radiol Exp
Lin S, Liu C, Zhou Y, Chen Q, Wang S, Wu J, Wang X, Sun J.   +7 more
europepmc   +1 more source

Accuracy of virtual non-contrast images from dual-energy integrating detector CT and photon-counting detector CT at high iodine concentrations. [PDF]

Neuroradiol J
Grkovski R, Kulcsar Z, Winklhofer S.
europepmc   +1 more source

Thoracic applications of photon-counting CT: where are we after 3 years of clinical implementation? [PDF]

Br J Radiol
Remy-Jardin M, Flohr T, Remy J.
europepmc   +1 more source

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Photon-Counting Polarizing Radiometer

Applied Optics, 1974
Photon counting is used in this instrument to obtain high precision in the measurement of the intensity, degree of polarization, and orientation of the plane of polarization of light in the natural environment. The dual-channel configuration, with four interference filters in each channel, provides the possibility of measurements in eight narrow ...
K L, Coulson, R L, Walraven, G I, Weigt, L B, Soohoo   +3 more
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Photon counting with photodiodes

Applied Optics, 1983
Preliminary results concerning the use of silicon photodiodes designed to be used in the photon counting or Geiger mode are described. These Geiger photodiodes have higher detected quantum efficiency than photomultiplier tubes over the 5000–9000-A wavelength region and are especially superior at longer wavelengths, although they can only be used in the
T E, Ingerson, R J, Kearney, R L, Coulter   +2 more
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Photon Counting Histogram: One‐Photon Excitation

ChemPhysChem, 2004
AbstractThe photon counting histogram (PCH) analysis is a fluorescence fluctuation method that is able to characterize the brightness and concentration of different fluorescent species present in a liquid sample. We find that the PCH model using a three‐dimensional Gaussian observation volume profile is inadequate for fitting experimental data obtained
Bo, Huang, Thomas D, Perroud, Richard N, Zare   +2 more
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Single photon counting imagery

Journal of Bioluminescence and Chemiluminescence, 1989
AbstractAdvent of the multichannel plate and position sensitive detector has made possible true single photon counting imaging tubes. We have investigated the application of these detectors in studies of the ultraweak light emission of biological materials.
R Q, Scott, H, Inaba
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Photon Counting

Applied Optics, 1968
The fundamentals of photon counting using photomultipliers are described, including criteria for selecting suitable photomultipliers, some of the precautions that must be taken in using these devices, and methods of calculating the counting errors that may occur under various conditions of measurement.
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