Definition: X-ray (digital)

Definition: X-ray (digital)  | Glossary entry

X-ray (digital)

Original X-ray radiography was a photographic process. The X-ray emissions (radiation) directly changed the chemical coating on the film plate. Then the X-ray was developed in chemical baths to produce the negative. The latter was then examined on a light box.

Modern X-ray machines use an entirely digital process. X-ray imaging used digital X-ray sensors instead of photographic film. The X-ray radiation emissions are directly detected by a digital imaging sensor array. The sensor is more sensitive than previous film processes. This digital process is more versatile and it is easer to control exposure and do emission calibration. Less radiation is required to get similar image standards than the photographic process. The big saving is in the developing of the image. The photographic process was time consuming, prone to errors and costly.

The digital process allows the final digital image to be zoomed, enlarged (marginally), digitally stored and manipulated for research. X-ray databases are also readily available for research using metadata and modern search methods. Digital transmission of X-rays to other hospitals and for research make the medical administration of individuals easier and more practical than using expensive delivery agents. All these digital processes save money, space and time.

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By Damon Guy (author and Photokonnexion editor)

Damon Guy - Netkonnexion

Damon Guy (Netkonnexion)

Damon is a writer-photog and editor of this site. He has run some major websites, a computing department and a digital image library. He started out as a trained teacher and now runs training for digital photogs.
See also: Editors ‘Bio’.
By Damon Guy see his profile on Google+.

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