Digital radiology is a novel method of medical imaging which uses digital X-ray sensors instead of conventional films to produce images. This technology provides faster imaging, detailed radiographs and quality digital images. Digital radiology constitutes a system with components that include a digital image receptor, a digital image processing unit, an image management system, image and data storage devices, interface to a patient information system, a communication network and a display device with operated controls. Digital radiographs are stored in the form of digital data and can be displayed on a computer monitor. There are various methods of capturing a digital radiograph which include computed radiology (CR), digital fluoroscopy (DF), and flat panel radiology systems namely direct and indirect radiology. Of the several methods available, computed radiology is the most commonly used method to make digital radiographs.
Computed radiology is faster compared to film imaging. The same X-ray system which was used for film radiology can be utilized and a special phosphor plate called imaging plate is used in this method. Once the exposure is done, the imaging plate will be scanned with laser to reveal the captured image. Further as it is a digital image, it can be enhanced by processing.
One of the major advantages of digital radiology as compared with images recorded with photographic film is easy storage and speedy retrieval without affecting image quality. Other advantages include enhanced image quality, digital manipulation, and ease of carrying.