scholarly journals Gamma-ray computerized tomography using 10 MeV laser-Compton photon beam

2004 ◽  
Author(s):  
H. Toyokawa ◽  
T. Mikado ◽  
H. Ogawa ◽  
N. Sei ◽  
K. Yamada ◽  
...  
Keyword(s):  
Computerized Tomography ◽  
Gamma Ray ◽  
Photon Beam

scholarly journals Geometric Sensitivity of a Pinhole Collimator

2010 ◽  
Vol 2010 ◽  
pp. 1-18 ◽  
Author(s):  
Howard Jacobowitz ◽  
Scott D. Metzler
Keyword(s):  
Computerized Tomography ◽  
Gamma Ray ◽  
Single Photon ◽  
Photon Emission ◽  
Elliptic Functions ◽  
Single Photon Emission ◽  
Double Integral ◽  
Detection Plane ◽  
Cauchy's Theorem ◽  
Pinhole Aperture

Geometric sensitivity for single photon emission computerized tomography (SPECT) is given by a double integral over the detection plane. It would be useful to be able to explicitly evaluate this quantity. This paper shows that the inner integral can be evaluated in the situation where there is no gamma ray penetration of the material surrounding the pinhole aperture. This is done by converting the integral to an integral in the complex plane and using Cauchy's theorem to replace it by one which can be evaluated in terms of elliptic functions.

scholarly journals Analysis of concrete material through gamma ray computerized tomography

2004 ◽  
Vol 34 (3a) ◽  
pp. 1020-1023 ◽  
Author(s):  
J. M. de Oliveira Jr. ◽  
A. C. G. Martins ◽  
J. A. DE Milito
Keyword(s):  
Computerized Tomography ◽  
Gamma Ray ◽  
Concrete Material

scholarly journals HARPO, prototype of a gamma-ray polarimeter: Results of a polarised photon beam test between 1.7 and 74 MeV

2017 ◽  
Author(s):  
David Attié ◽  
Sho Amano ◽  
Pascal Baron ◽  
David Baudin ◽  
Denis Bernard ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Photon Beam ◽  
Beam Test

Accuracy of gamma ray computerized tomography in porous media

1993 ◽  
Vol 29 (2) ◽  
pp. 479-486 ◽  
Author(s):  
Glenn O. Brown ◽  
Marvin L. Stone ◽  
Jack E. Gazin
Keyword(s):  
Porous Media ◽  
Computerized Tomography ◽  
Gamma Ray

On the possible gamma-ray source in Cygnus

1967 ◽  
Vol 31 ◽  
pp. 469-471
Author(s):  
J. G. Duthie ◽  
M. P. Savedoff ◽  
R. Cobb
Keyword(s):  
Gamma Rays ◽  
Gamma Ray ◽  
Right Ascension

A source of gamma rays has been found at right ascension 20h15m, declination +35°, with an uncertainty of 6° in each coordinate. Its flux is (1·5 ± 0·8) x 10-4photons cm-2sec-1at 100 MeV. Possible identifications are reviewed, but no conclusion is reached. The mechanism producing the radiation is also uncertain.

Solar Flare Energetic Neutral Emission Measurements in the Project Coronas-I

1994 ◽  
Vol 144 ◽  
pp. 635-639
Author(s):  
J. Baláž ◽  
A. V. Dmitriev ◽  
M. A. Kovalevskaya ◽  
K. Kudela ◽  
S. N. Kuznetsov ◽  
...  
Keyword(s):  
Solar Flare ◽  
Energy Range ◽  
Gamma Rays ◽  
Pulse Shape ◽  
Gamma Ray ◽  
Pulse Shape Discrimination ◽  
Shape Discrimination ◽  
Solar Neutron ◽  
Low Altitude

AbstractThe experiment SONG (SOlar Neutron and Gamma rays) for the low altitude satellite CORONAS-I is described. The instrument is capable to provide gamma-ray line and continuum detection in the energy range 0.1 – 100 MeV as well as detection of neutrons with energies above 30 MeV. As a by-product, the electrons in the range 11 – 108 MeV will be measured too. The pulse shape discrimination technique (PSD) is used.

1786: Prediction of Differential Renal Function as Determined by Contrasted and non-contrasted Computerized Tomography

2007 ◽  
Vol 177 (4S) ◽  
pp. 593-594
Author(s):  
Shelby N. Morrisroe ◽  
Erin P. Gibbons ◽  
Benjamin R. Stockton ◽  
Kyongtae T. Bae ◽  
Cheng Hong ◽  
...  
Keyword(s):  
Renal Function ◽  
Computerized Tomography ◽  
Differential Renal Function
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