Title :
X-Ray Image Intensifier Tubes Using Rare Earth Oxysulfide Phosphors
Author :
Wang, S.P. ; Laudi, O. ; Lucks, H. ; Wickersheim, K.A. ; Buchanan, R.A.
Author_Institution :
Rauland Division, Zenith Radio Corporation Niles, Illinois 60648
Abstract :
Inproved utilization of incident x-ray quanta in medical x-ray image intensifier tubes will allow operation at reduced x-ray dose levels and/or yield pictures with higher signal-to-noise ratio. This paper describes the characteristics and performances of experimental screens and image intensifier tubes using La2O2S(Tb) and Gd2O2S(Tb) phosphors. Inproved quantum utilization by a factor of 2 to 3 is observed relative to screens and image intensifier tubes made with conventional ZnCdS(Ag) phosphors. Accordingly, reduction of patient and operator dosage by a factor of 2 to 3 is found to be possible.
Keywords :
Atomic measurements; Biomedical imaging; Electromagnetic wave absorption; Image converters; Image intensifiers; Laboratories; Phosphors; Signal to noise ratio; Spatial resolution; X-ray imaging;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.1970.4325558
