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radiology vocab

TermDefinition
ALARA concept Concept of radiation protection that states that 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.
Bremsstrahlung radiation "Braking radiation" The sudden deceleration of electrons as they interact with highly positively charged nuclei.
Cathode The negative electrode in the x-ray tube.
Central ray X-rays at the center of the beam
Contrast Differences in degrees of blackness of an image
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 an image
Dental radiography The process of recording images of the teeth and adjacent structures by exposure to x-radiation
Digital imaging A filmless method of capturing an image and displaying it by using an image receptor, an electronic signal, and a computer to process and store the image.
Distortion Change in size of an image caused by incorrect vertical angulation
Dose The amount of energy absorbed by tissues
Dosimeter A device used to detect and measure an accumulated dosage of radiation.
Electron A negatively charged particle in the atom.
Energy The ability to do work.
Extension arm Flexible arm that is attached to the x-ray tubehead
Genetic Effects of radiation that are passed on to future generations through genetic cells.
Image Film-based or digitally produced recordings of anatomic structures.
Image receptor A recording medium for an image, normally film, phosphor storage plate, or a digital sensor
Intensity The total energy of the x-ray beam
Ion An electrically charged particle.
Ionization Process by which electrons are removed from atoms, causing the harmful effects of radiation in humans.
Ionizing Radiation that produces ionization, resulting in harmful effects.
Kilovoltage Highest voltage of x-ray tube used during an exposure.
Latent Time between exposure to ionizing radiation and appearance of symptoms.
Lead apron Device used to protect the reproductive and blood-forming tissues from scatter radiation
Magnification The proportional enlargement of an image.
Created by: pefanm233
 

 



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