Physics

European Radiology

, Volume 12, Issue 10, pp 2562-2570

Digital radiography with large-area flat-panel detectors

  • E. KotterAffiliated withDepartment of Diagnostic Radiology, Freiburg University Hospital, Hugstetterstrasse 55, 79106 Freiburg
  • , M. LangerAffiliated withDepartment of Diagnostic Radiology, Freiburg University Hospital, Hugstetterstrasse 55, 79106 Freiburg

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Abstract.

Large-area flat-panel detectors with active readout mechanisms have been on the market for the past 2 years. This article describes different detector technologies. An important distinction is made between detectors with direct and those with indirect conversion of X-rays into electrical charges. Detectors with indirect conversion are built with unstructured or structured scintillators, the latter resulting in less lateral diffusion of emitted light. Some important qualities of flat-panel detectors are discussed. The first phantom and clinical studies published report an image quality at least comparable to that of screen-film systems and a potential for dose reduction. The available studies are summarised in this article.

Digital radiography Computed radiography Screen-film radiography Storage phosphor radiography