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Image quality vs radiation dose for a flat-panel amorphous silicon detector : a phantom study

Geijer, Håkan (author)
Department of Radiology, Örebro Medical Centre Hospital, Örebro, Sweden
Beckman, Karl-Wilhelm (author)
Department of Medical Physics, Örebro Medical Centre Hospital, Örebro, Sweden
Andersson, Torbjörn (author)
Department of Radiology, Örebro Medical Centre Hospital, Örebro, Sweden
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Persliden, Jan, 1950- (author)
Department of Medical Physics, Örebro Medical Centre Hospital, Örebro, Sweden
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 (creator_code:org_t)
2001-05-03
2001
English.
In: European Radiology. - : Springer Science and Business Media LLC. - 0938-7994 .- 1432-1084. ; 11:9, s. 1704-1709
  • Journal article (peer-reviewed)
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  • The aim of this study was to investigate the image quality for a flat-panel amorphous silicon detector at various radiation dose settings and to compare the results with storage phosphor plates and a screen-film system. A CDRAD 2.0 contrast-detail phantom was imaged with a flat-panel detector (Philips Medical Systems, Eindhoven, The Netherlands) at three different dose levels with settings for intravenous urography. The same phantom was imaged with storage phosphor plates at a simulated system speed of 200 and a screen-film system with a system speed of 160. Entrance surface doses were recorded for all images. At each setting, three images were read by four independent observers. The flat-panel detector had equal image quality at less than half the radiation dose compared with storage phosphor plates. The difference was even larger when compared with film with the flat-panel detector having equal image quality at approximately one-fifth the dose. The flat-panel detector has a very favourable combination of image quality vs radiation dose compared with storage phosphor plates and screen film.

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