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An evaluation of HgI 2 detectors for x‐ray computed tomography
Author(s) -
Beinglass I.,
Kaufman L.,
Hoisier K.,
Hoenninger J.
Publication year - 1980
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 - 10.1118/1.594694
Subject(s) - detector , x ray detector , computed tomography , tomography , physics , x ray , optics , image resolution , resolution (logic) , semiconductor detector , materials science , optoelectronics , medical physics , nuclear medicine , computer science , radiology , medicine , artificial intelligence
Mercuric iodide (HgI 2 ) presents a set of attractive features as a semiconductor x‐ray detector for computed tomography (CT). Its response is stable, it operates at room temperature, and thin detectors have a high detection efficiency. The properties of HgI 2 permit the assembly of high spatial resolution detectors in a compact configuration. On the other hand, HgI 2 exhibits a long memory, and some detectors also exhibit polarization effects, both of which are detrimental in CT. A pulse‐shaping technique has been used to overcome these effects, thus demonstrating the suitability of HgI 2 for use in CT.