Digital radiography (DR) is an advanced form of x-ray inspection which produces a digital radiographic image instantly on a computer. This technique uses x-ray sensitive plates to capture data during object examination, which is immediately transferred to a computer without the use of an intermediate cassette. The incident x-ray radiation is converted into an equivalent electric charge and then to a digital image through a detector sensor. Radiation Dose has decreased drastically as the acquisition time and the sensitive plates provides high end images with the least radiation dose.

Annual radiation dose in UK: 2.7 mSv (Cosmic radiation, Terrestrial radiation)

Chest X-ray = 0.014mSv
100g Brazil nuts = 0.01 mSv