Image information transfer properties of x-ray fluorescent screens

Journal Article · · Med. Phys.; (United States)

DOI:https://doi.org/10.1118/1.594836· OSTI ID:5336419

Dick, C E; Motz, J W

The image information transfer efficiency for five x-ray fluorescent screens (calcium tungstate, barium halide, and three rare earth screens) has been experimentally determined with monoenergetic x-ray beams at energies of 18, 22, 32, 49, 51, 58, and 69 keV. The transfer efficiency, which is defined by the ratio of the output signal-to-noise ratios, was determined from measurements of (a) the fraction of incident x rays absorbed in the screen and (b) the statistical distribution of the number of light photons emitted from the screen per absorbed x ray which was determined by light photon counting techniques. Comparisons of the information transfer efficiency, the average number of light photons emitted per absorbed x ray, and the light output energy per Roentgen are given for the above screens and x-ray energies.

• Research Organization: National Bureau of Standards, Washington, D.C.
• OSTI ID: 5336419
• Journal Information: Med. Phys.; (United States), Journal Name: Med. Phys.; (United States) Vol. 8:3; ISSN MPHYA
• Country of Publication: United States
• Language: English

Related Subjects

550602* -- Medicine-- External Radiation in Diagnostics-- (1980-)
62 RADIOLOGY AND NUCLEAR MEDICINE
CHEMICAL ANALYSIS
EFFICIENCY
ELECTROMAGNETIC RADIATION
IONIZING RADIATIONS
NONDESTRUCTIVE ANALYSIS
RADIATIONS
SCREENS
X RADIATION
X-RAY EMISSION ANALYSIS
X-RAY FLUORESCENCE ANALYSIS