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Radiology Term

QuestionAnswer
ALARA concept of radiation protection that states all exposures should be kept “as low as reasonably achievable
cathode negative electrode in the x-ray tube.
Density overall darkness or blackness of an image.
Focusing Cup keeps electrons suspended in an electron cloud at the cathode and directs them toward the target.
Silver halide crystals The fast film responds more quickly because the silver halide crystals in the emulsion are larger, the larger the crystals, the faster the film speed
Kiliovoltage Kvp highest voltage of x-ray tube used during an exposure.
Latent period/ image invisible image on the x-ray film after exposure but before processing.
Milliamperage One-thousandth (1/1000) of an ampere, a unit of measurement used to describe the intensity of an electrical current.
Primary radiation same as primary beam.
X-Ray high-energy ionizing electromagnetic radiation.
biscecting technique Intraoral technique of exposing periapical films.
cone-cutting occurs at the edge of the film and is often due to misalignment of the collimator and/or the film
elongation the teeth appear too long. Elongation of images is caused by insufficient (not enough) vertical angulation, or vertical angulation that is too “flat”
forehortening the teeth appear too short. Foreshortening of images results from excessive vertical angulation
ionization Process by which electrons are removed from atoms, causing the harmful effects of radiation in humans.
radiopaque images are structures that are dense and resist the passage of radiation causing the image to appear light or white depending on the density.
cephalometeric radiograph X-ray used for orthodontic treatment to show the bony and soft tissue areas of the facial profile.
Digital image Filmless method of capturing an image and displaying it by using an image sensor, an electronic signal, and a computer to process and store the image.
Created by: alejac0360
 

 



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