Solid-state, digital radiography (DR) detectors, designed specifically for standard projection radiography, emerged just before the turn of the millennium.
The following sections discuss recent developments for the three main digital detector technologies: storage phosphors (computed radiography; CR), flat-panel detectors (digital radiography; DR) and CCD detectors.
Borasi, G; Samei, E; Bertolini, M; Nitrosi, A; Tassoni, D, Contrast-detail analysis of three flat panel detectors for digital radiography., Medical Physics, vol 33 no.
These include digital radiography (DR) systems such as the CSi/amorphous silicon detector (for example, GE Senographe 2000D, DS and Essential models), amorphous selenium (for example, LoRad Selenia, Siemens Novation and Inspiration models, IMS Giotto, Planmed Nuance) and a scanning system with silicon detectors (for example, Sectra Micro Dose Mammography).
The setup for digital radiography is shown in Figure 4 and the source to detector distance (SDD) and the object to detector distance (ODD) were varied to change the magnification factor (a max. of 1,2 was used) in accordance with the focal size used (0,4 or 1,0 mm) and the wall thickness to be inspected.
It was found that the PSP provides a precise x-ray detector for quantitative scatter measurement in digital radiography.
Samei, E; Flynn, MJ, An experimental comparison of detector performance for direct and indirect digital radiography systems., Medical Physics, vol 30 no. 4 (2003), pp. 608-622 [10.1118/1.1561285] [abs].
MATERIALS AND METHODS: The digital radiography system is based on a large-area flat-panel x-ray detector with a structured cesium iodide scintillator layer and an amorphous silicon thin-film transistor array for image readout.
All imaging was implemented using a clinical Axiom digital Radiography Fluoroscopy (dRF) scanner (Siemens, Munich, Germany), which contains a 42 cm × 42 cm flat detector within the bed.
The 5-year RSA examinations were performed using a digital radiography system consisting of 2 ceiling-mounted X-ray sources (RAD-92; Varian Medical Systems, Palo Alto, CA) and corresponding digital detectors (Canon CXDI-55C; Canon USA, Lake Success, NY).
The hospital is equipped with digital radiography, digital dental radiography, ultrasound, and much more.
