Flat-panel detectors are a class of solid-state x-ray digital radiography devices. They are used in both projectional radiography and as an alternative to x-ray image intensifiers (IIs) in fluoroscopy equipment. They contain a layer of scintillator material, typically either gadolinium oxysulfide or cesium iodide, which converts the x-rays into the light. Directly behind the scintillator layer is an amorphous silicon detector array manufactured using a process very similar to that used to make LCD televisions and computer monitors. Like a TFT-LCD display, millions of roughly 0.2 mm pixels each containing a thin-film transistor form a grid-patterned in amorphous silicon on the glass substrate. Unlike an LCD, but similar to a digital camera's image sensor chip, each pixel also contains a photodiode that generates an electrical signal in proportion to the light produced by the portion of the scintillator layer in front of the pixel. The signals from the photodiodes are amplified and encoded by additional electronics positioned at the edges or behind the sensor array in order to produce an accurate and sensitive digital representation of the x-ray image. Flat-panel detectors are more sensitive and faster than film. Their sensitivity allows a lower dose of radiation for a given picture quality than film. Being one of top solution providers in the world, we deliver an user-oriented product which equips high-quality image, lightweight, dual battery and innovative wifi antenna to enhance work efficiency.
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