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Method of evaluation of structural (screen) and quantum graininess of X-ray pictures

Journal Article:

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.
Authors:
Gurvich, A M; Shamanov, A A; Erofeeva, N D [1] 
  1. Nauchno-Issledovatel'skij Inst. Rentgenologii i Radiologii, Moscow (USSR)
Publication Date:
Mar 01, 1979
Product Type:
Journal Article
Reference Number:
AIX-10-487801; EDB-80-041984
Resource Relation:
Journal Name: Defektoskopiya; (USSR); Journal Volume: 3
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; IMAGES; RADIOLUMINESCENCE; X-RAY RADIOGRAPHY; BRIGHTNESS; ENERGY DEPENDENCE; FILMS; KEV RANGE; ENERGY RANGE; INDUSTRIAL RADIOGRAPHY; LUMINESCENCE; MATERIALS TESTING; NONDESTRUCTIVE TESTING; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; TESTING; 550601* - Medicine- Unsealed Radionuclides in Diagnostics
OSTI ID:
5578551
Country of Origin:
USSR
Language:
Russian
Other Identifying Numbers:
Journal ID: CODEN: DEFKA
Submitting Site:
INIS
Size:
Pages: 99-102
Announcement Date:

Journal Article:

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 = {Defektoskopiya; (USSR)}
volume = {3}
journal type = {AC}
place = {USSR}
year = {1979}
month = {Mar}
}