Exam 1 Terminology Flashcards

1
Q

Time between exposure to ionizing radiation and apperance of symptoms

A

latent period

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2
Q

Lead Apron

A

device used to protect the reproductive and blood-forming tissues from scatter radiation

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3
Q

matter

A

anything that occupies space and has form or shape

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4
Q

penumbra

A

blurred or indistinct area that surrounds an image

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5
Q

photon

A

Tiny bundle of pure energy that has no weight or mass

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6
Q

Primary beam

A

most penetrating beam produced at the target of the anode

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7
Q

Radiation

A

forms of waves of energy emission through space or material

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8
Q

Radiograph

A

image produced on photosensitive film by exposing the film to radiation and then processing it

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9
Q

Sharpness

A

measure of how well an image reproduces the fine details or outline of an object

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10
Q

Contrast

A

differences in degrees of blackness on an image

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11
Q

Control panel

A

portion of the x-ray unit that contains the master switch, the indicator light, the selector buttons, and the exposure button

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12
Q

Density

A

overall darkness or blackness of an image

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13
Q

Dental Radiography

A

process of recording images of the teeth and adjacent structures by exposure to x-radiation

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14
Q

Distortion

A

change in the size of an image caused by incorrect vertical angulation

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15
Q

Dosimeter

A

device used to detect and measure an accumulated dosage of radiation

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16
Q

Energy

A

Ability to do work

17
Q

Genetic effects

A

effects of radiation that are passed on to future generations through genetic cells

18
Q

somatic effects

A

effects of radiation that cause illness and are responsible for poor health (such as cancer, leukemia, and cataracts) but are not passed on to offspring

19
Q

Ionization

A

process by which electrons are removed from atoms, causing the harmful effects of radiation in humans

20
Q

Alara concept

A

concept of radiation protection that states that all exposures should be kept “as low as reasonably achievable”

21
Q

Anode

A

positive electrode in the x-ray tube

22
Q

Atom

A

Basic Unit of matter

23
Q

Cathode

A

negative electrode in the x-ray tube

24
Q

Central Ray

A

x-rays at the center of the beam