ALARA
As Low As Reasonably Achievable.
Collimator
helps eliminate peripheral radiation
Dosimeter
a device that measures cumulative radiation
Primary Beam
the main flow of x-rays from the x-ray machine
Primary Radiation
The rays coming from the primary beam
Scatter Radiation
Rays deflected from exposed tissue to adjacent tissues, or rays deflected within the tube head.
rem
a unit of radiation exposure. "biological dose.
What is the purpose of dental x-rays?
To Diagnose
What causes the dark area on the developed film?
x-ray striking the film
What does the mA setting control?
The quantity of x-rays
What does the kVp setting control?
The wavelength and penetrating power of the x-rays.
developer
the solution that reacts with the film emulsion to produce a visible image
emulsion
the thin coating on the sides of the x-ray
fixer
solution that dissolves away silver bromide crystals in order to stop the film from being sensitive to light
silver bromide
a substance suspended in the emulsion of x-ray film
What is the normal temperature of the processing solutions?
68 degrees F
How long is the finishing rinse in manual processing?
20 minutes
The automatic processor feeds the film through which stages of processing?
developer, fixer, rinse
How often should the solutions be changed in manual processing?
once every two weeks, or more.
bite-wings
shows the crowns of the upper and lower posterior teeth
contrast
the difference in density between adjacent areas of an image
density
the blackness of an image
elongation
an error in vertical angulation