Radiology module 11 Flashcards
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X-ray film has 4 basic components. They are?
Clear Plastic Base
Adhesive layer
Emulsion
Protective layer
X-ray film serves as a recording medium or — —
Image receptor
The film base is —-inches thick, can withstand —,—,— exposure, and has a — tint
.007 Heat Moisture Chemical Blue
Film is composed of a clear — —-
Film base that is coated with an — on both sides!
Cellulose acetate
Emulsion
Primary purpose of the film base is
Provide support for emulsion
There is a thin layer of adhesive that attaches the —- to the —-
Emulsion
Film Base
Film emulsion is sensitive to —, —, and —- —-
X-rays
Light
Static electricity
The emulsion is a —- mixture of — and —
Homogenous
Gelatin
Silver Halide crystals
“Fruit salad”
During film processing the gelatin of the emulsion does what?
Absorbs processing solutions and allows chemicals to react with the crystals
The two types of silver halide crystal are?
Silver bromide AgBr
Silver iodine AgI
The — — — retain the latent image and are sensitive to?
Silver halide crystals
Light
The gelatin in the emulsion keeps crystals from — and also protects them during —
Clumping
Film handling
There is a — layer placed over both sides of the emulsion
Protective
The outer package of the film protects it from — and —
Light
Moisture
The film packet is made up of what 4 things?
from inside out
Film
Black Paper film wrapper
Lead foil
Outer film wrapping
Outer package of film is — or “—”
Smooth
Pebbly
A film packet can have — or — films inside it
1
2 ( duplicating )
The small raised dot on the film is called the —
Identification dot
The film identification dot is helpful when — or —- The films
Placing
Mounting
The lead foil is positioned — the film so as to prevent/absorb —
Behind
Back scattered radiation
The outer package of the film has two sides?
Tube side
Label side
The tube side of the packet is —
The label side is —
White
Color coded
What are the 3 types of intraoral film
Periapical
Bitewing
Occlusal
Typical Sizes of films used?
0,1,2
3,4 less common
Film sensitivity/speed is determined by what 3 things
Size of halide crystals
Thickness of emulsion
Presence of special radiosensitive dyes
The — the crystals the faster the film speed and — radiation is needed
Larger
Less
Only speed – and — are used for Intraoral procedures
D
F
F speed film requires —% of the exposure time needed for D speed
60
F speed film has — crystals and an increased/thinker amount of —-
Bigger
Silver bromide in the emulsion
— crystals have sharper images
Smaller
Next to rectangular collimation
— — Contributes most to reduced patient radiation exposure!
Film speed
The — — within the halide crystals forms a pattern and creates a — image called the latent image
Stored energy
Invisible
The latent image can’t be seen until?
Processing occurs
