A sophisticated kind of X-ray inspection known as digital radiography (DR) generates a digital radiographic image on a computer screen instantaneously. During object examination, this method uses-x-ray-sensitive plates to gather data, which is then instantly sent to a computer without the need for an intermediary cassette. A detector sensor transforms the incident X-ray radiation into an equivalent electric charge and subsequently a digital image. Digital detector arrays, sometimes referred to as flat panel detectors, offer superior digital image quality as compared to alternative imaging systems. They may have enhanced dynamic range and a superior signal-to-noise ratio, which translates into excellent sensitivity for radiography applications. There are two methods that flat panel detectors use to operate: indirect conversion and direct conversion. The scintillator layer of indirect conversion flat panel detectors changes x-ray photons into visible light photons, which are then transformed into an electrical charge using an amorphous silicon photodiode matrix. This charge is directly correlated with the quantity and density of material that has absorbed the x-rays, as well as the number and energy of x-ray photons that interact with the detector pixel.

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