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A prototype amorphous selenium imaging plate system for digital radiography
Author(s) -
Papin Patrick J.,
Huang H. K.
Publication year - 1987
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.596087
Subject(s) - digital radiography , optical transfer function , optics , materials science , medical imaging , digital imaging , imaging phantom , amorphous solid , selenium , nuclear medicine , radiography , physics , computer science , digital image , image processing , computer vision , artificial intelligence , chemistry , medicine , organic chemistry , nuclear physics , metallurgy , image (mathematics)
This paper summarizes the results of research and development of a prototype amorphous selenium digital imaging system. The first phase of this project consists of the preliminary design and fabrication of the system. In this system the conventional film–screen photon receptor is replaced by a charged amorphous selenium imaging plate. After exposure, the latent electrostatic image on the selenium surface is scanned with multiple microelectrometer probes forming a 1024×1024×12 bit digital image. The second phase investigates the system's physical imaging characteristics and clinical feasibility. X‐ray exposure latitude comparable to 200‐speed calcium–tungstate film–screen system are shown for three typical diagnostic kVp settings with total filtration of 3 mm aluminum and 9 cm Lucite. Using the modulation transfer function (MTF), resolving power of approximately 1.0 line pair per millimeter and detective quantum efficiency values of approximately 5% have been measured. The clinical evaluation consists of preliminary images of a 16‐kg female dog and a 4.5‐kg rabbit and comparisons to film–screen images are offered.