Film Screen Radiography intro Flashcards
what do film screen radiography image receptors look like
has a cassete containing a piece of xray fil and 2 intensifying screens
how does film screen radiography work
the xray film and the intesifying screens work together to produce an xray image
the intensifying films contain phosphor crystals which absorb xray energy when exposed to radiation. this xray energy ius then converted into visible light which is then emitted
the xray film contains an emulsion that is sensitive to visible light and when it is exposed to visible light it turns black and produces a latent image which is only visaible once processed
what do the intensifying screens contain that help them to produce an image
phosphor crystals
what allows the xray film to produce an image
the visible light sensitive emulsion
what is film processing
this is the process in which the invisible latent image is converted into a visible xray image
explain image viewing process
xray fil images are viewed in a light box and any findings are reported to a dictophone
explain the image storage process
the xray fil is returned to the referrer via an xray packet containing the patients entire radiology history
explain the silver recovery process after the film has been used
this is the process in which silver is recycled from used xray films as silver salts are deposited during the image production process
the xray film is shredded and placed in cyanide solution which leaches the silver and the silver is separated from the solution via electrolysis
what are the benifits of film radiography
benifits:
cheap
silver recovery
tried and tested technique which has been used for years
permanent record which leaves little room for tampering
what are the limitations of film radiography
films are not re usable
no post processing such as altering brightness
films can get lost
poor film storage technique
