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DENT 176 Key Terms 1

Radiology History and X-ray Unit

QuestionAnswer
ALARA concept Concept of radiation protective that states all exposures should be kept “as low as reasonably achievable”.
Anode the positive electrode in the x-ray tube.
Atom the basic unit of matter.
Cathode the negative electrode in the x-ray tube.
Central Ray X-rays at center of the beam.
Contrast the differences in degrees of blackness on a radiograph.
Control Panel The portion of the x-ray unit that contains the master switch, the indicator light, the selector buttons, and the exposure button.
Density The overall darkness or blackness of a radiograph.
Dental Radiography Process of making radiographs of the teeth and adjacent structures by exposure to radiographs.
Distortion Change in the size of an image on a radiograph caused by incorrect vertical angulation.
Created by: akikoululani
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