Abstract
Proposed is a method for quantitative determination of graininess of X-ray pictures (gamma-ray images), the graininess being conditioned by the structure of amplifying screens and quantum fluctuations. The method is based on the determination of threshold brightness at which the picture graininess becomes obvious. It is shown that at low effective quantum energy (Esub(eff.) <= 50 keV) the graininess observed is for the most part structural (screen). Its growth is connected with quantum fluctuations when increasing Esub(eff.) up to 150 keV and using screens with high output values of X-ray luminescence and the coefficient of spectral accordance to the film.
Gurvich, A M;
Shamanov, A A;
Erofeeva, N D
[1]
- Nauchno-Issledovatel'skij Inst. Rentgenologii i Radiologii, Moscow (USSR)
Citation Formats
Gurvich, A M, Shamanov, A A, and Erofeeva, N D.
Method of evaluation of structural (screen) and quantum graininess of X-ray pictures.
USSR: N. p.,
1979.
Web.
Gurvich, A M, Shamanov, A A, & Erofeeva, N D.
Method of evaluation of structural (screen) and quantum graininess of X-ray pictures.
USSR.
Gurvich, A M, Shamanov, A A, and Erofeeva, N D.
1979.
"Method of evaluation of structural (screen) and quantum graininess of X-ray pictures."
USSR.
@misc{etde_5578551,
title = {Method of evaluation of structural (screen) and quantum graininess of X-ray pictures}
author = {Gurvich, A M, Shamanov, A A, and Erofeeva, N D}
abstractNote = {Proposed is a method for quantitative determination of graininess of X-ray pictures (gamma-ray images), the graininess being conditioned by the structure of amplifying screens and quantum fluctuations. The method is based on the determination of threshold brightness at which the picture graininess becomes obvious. It is shown that at low effective quantum energy (Esub(eff.) <= 50 keV) the graininess observed is for the most part structural (screen). Its growth is connected with quantum fluctuations when increasing Esub(eff.) up to 150 keV and using screens with high output values of X-ray luminescence and the coefficient of spectral accordance to the film.}
journal = []
volume = {3}
journal type = {AC}
place = {USSR}
year = {1979}
month = {Mar}
}
title = {Method of evaluation of structural (screen) and quantum graininess of X-ray pictures}
author = {Gurvich, A M, Shamanov, A A, and Erofeeva, N D}
abstractNote = {Proposed is a method for quantitative determination of graininess of X-ray pictures (gamma-ray images), the graininess being conditioned by the structure of amplifying screens and quantum fluctuations. The method is based on the determination of threshold brightness at which the picture graininess becomes obvious. It is shown that at low effective quantum energy (Esub(eff.) <= 50 keV) the graininess observed is for the most part structural (screen). Its growth is connected with quantum fluctuations when increasing Esub(eff.) up to 150 keV and using screens with high output values of X-ray luminescence and the coefficient of spectral accordance to the film.}
journal = []
volume = {3}
journal type = {AC}
place = {USSR}
year = {1979}
month = {Mar}
}