radiology part 2 Flashcards
film base
provides support and strength for delicate emulsion,
adhesive layer
covers both sides of the film base , attaches emulsion to the base
coating attached to both sides of the film base by the adhesive layer. gives the film greater sensitivity to x-radiation . A homogenous mixture of gelatine and silver halide crystals
film emulsion
2 most important ingredients of photographic emulsion
gelatin, silver halide crystals
halide crystals
chemical compound that is light or radiation sensitive
two types of silver halide crystals in the film emulsion
silver bromide, silver iodide
thin, transparent coating placed over the emulsion. Serves to protect the emulsion surface from manipulation as well as mechanical and processing damage
protective layer
t/f; silver halide crystals absorb x-radiation during X-ray. exposure and store the energy from the radiation
true
latent
existing but not yet developed
silver halide process chain
latent image, develop, stop, fix, visible image
intra oral film
placed inside the mouth
extra oral film
placed outside the mouth
duplicating film
used to make a identical copy of either intra or oral radiograph
components of intra-oral film packet
waterproof outer packaging, black paper wrapper, film, lead foil sheet
what is the identification dot for?
small raised bump in the corner, used to distinguish left or right sides when mounting.
on the film where should the white side face and raised dot face ?
white - directed toward the tube head
dot- points towards incisal/occlusal surface (for PA)
t/f; lead foil can be disposed of in general waste
false