Title :
Design of nonaxisymmetrical image intensifiers
Author :
Adamiak, Kazimierz ; Dabrowski, Waldemar J. ; Fenster, Aaron
Author_Institution :
Dept. of Electr. Eng., Univ. of Western Ontario, London, Ont., Canada
Abstract :
The concept of a nonaxisymmetrical X-ray image intensifier is presented in this paper. Instead of cylindrical electrodes, as in the conventional device, this intensifier is equipped with planar electrodes. Each one consists of some number of elementary quadrilateral patches, which are mutually insulated from each other and supplied with the proper voltages. The algorithm for determining potentials which must be supplied to the elementary electrodes is described in the paper. The algorithm has been validated by comparing the electric field distributions in both configurations. Details of the electric field distribution are also helpful in evaluating the optical characteristics of the intensifier
Keywords :
X-ray imaging; electric fields; electrodes; image intensifiers; electric field distributions; elementary electrodes; elementary quadrilateral patches; mutual insulation; nonaxisymmetrical X-ray image intensifier; optical characteristics; planar electrodes; Biological materials; Electrodes; Humans; Image converters; Image intensifiers; Optical attenuators; Optical imaging; Phosphors; Voltage; X-ray imaging;
Journal_Title :
Industry Applications, IEEE Transactions on
