Title :
Numerical simulation of optical characteristics in 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 paper presents and discusses results of numerical simulation of the novel design of an image intensifier. Contrary to the traditional configuration, this intensifier has a rectangular geometry, but a much larger number of electrodes than the cylindrical device in order to imitate the axisymmetrical electric field distribution. The optical characteristics are determined by numerically tracing the trajectories of electrons ejected from the input screen/photocathode assembly and reconstructing the output image. The results presented show the feasibility of the idea of a nonaxisymmetrical image intensifier
Keywords :
electric fields; electron emission; image intensifiers; image reconstruction; medical image processing; photocathodes; axisymmetrical electric field distribution; computed tomography; cylindrical device; ejected electrons; electrodes; electron trajectories tracing; input screen; medical imaging; nonaxisymmetrical image intensifiers; numerical simulation; optical characteristics; output image reconstruction; photocathode; rectangular geometry; Biomedical imaging; Biomedical optical imaging; Computed tomography; Electrodes; Electron beams; Electron optics; Image intensifiers; Image reconstruction; Numerical simulation; X-rays;
Conference_Titel :
Industry Applications Conference, 1996. Thirty-First IAS Annual Meeting, IAS '96., Conference Record of the 1996 IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-3544-9
DOI :
10.1109/IAS.1996.563826
