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DANB > DANB > Flashcards

DANB Flashcards

1
Q

The maximum dose of radiation that, in light of present knowledge, would not be expected to produce negative effects in a life.

A

MPD Maximum permissible dose

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2
Q

The negative terminal of an x-ray tube

A

Cathode

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3
Q

Short wavelengths with high frequency, high energy and high penetrating power

A

Hard radiation

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4
Q

wavelengths that have low energy, low frequency and are unsuitable for exposing dental radiographs.

A

long wavelengths

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5
Q

Radiation wavelengths that have high frequency, high energy and high penetrating power, also known as hard radiation

A

Short wavelengths

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6
Q

the radiation comes out in all directions from the tube or tube head due to malfunction or leak.

A

Leakage radiation

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7
Q

Central beam of the x-ray tube head

A

Primary radiation

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8
Q

Time elapsed between exposure and response.

A

Latent period

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9
Q

Radiation that is deflected from its path as it strikes matter.

A

Scatter Radiation

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10
Q

Formed when the primary x-ray strikes the patient or come in contact with any matter or substance.

A

Secondary Radiation

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11
Q

The system international unit of absorbed dose of ionizing radiation.

A

Radiation absorbed or gray dose.

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12
Q

Amount of ionizing radiation absorbed in a substance.

A

Radiation absorde dose RAD

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13
Q

Part of dental x-ray unit that houses the coolidge, vacuum tube, filtres, collimator and cone

A

X-ray tube

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14
Q

the primary x-ray emitting from the x-ray tube head

A

cental beam

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15
Q

The degree of darkness on an x-ray

A

Density

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16
Q

Film used inside the oral cavity

A

Intraoral

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17
Q

Black region on the x-ray indicating where radiation passed through the tissue

A

Radiolucency

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18
Q

Area on the anode that electrons hit during x-ray production.

A

Focal spot

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19
Q

Process by wich atoms channge into negative or positive charde ions during radiation

A

Ionization

20
Q

Determines the amount of radiation exposure the patient receives.

A

mAs Milliamperage seconds

21
Q

Discovery by Wilhem Conrad Roentgen in 1895

A

x-ray

22
Q

Glass Vacuum tube with electrial circut connected to each end

A

Hittorf crookes Tube

23
Q

Negatively charged particles

A

Cathode Rays

24
Q

Some of the deepest cells in the dermis

A

Basal cells

25
Q

ALARA - The principle of keeping radiation exposure.

A

As low as reasonably achievable

26
Q

Long wavelengths with low energy, low frequency and low penetrating power also called Grenz rays

A

Soft radiation

27
Q

A radiation unit of measurements

A

Sievert (Sv)

28
Q

A radiation unit of measurements

A

Roentgen Equivalent Man (REM)

29
Q

The amount of radiation that ionizes one cubic centimeter of air.

A

Roentgens (R)

30
Q

Milliroentgen (Mr)

A

one thousandth of a roentgen.

31
Q

Electromagnetic energy

A

A form of energy that is the result of electric and magnetic disturbances in space

32
Q

Condition of being sensitized and affected by radiant energy

A

Radiosensitive

33
Q

Dr Otto Walkoff

A

Took the first x-ray 1895 (two weeks after x-rays discovered)

34
Q

device used to eliminate peripheral radiation

A

collimator

35
Q

Device on a radiagraphy machine where settings can be adjusted

A

Control panel

36
Q

unit of electrical potential equal to 1,000 volts, dental kilovoltage is responsible for the quality of radiographs.

A

Kilovoltage (Kv)

37
Q

Measurement unit for the electrical current.
Determines amount or quantity of electrons

A

Milliamperage (mA)

38
Q

Computer generated “Digits (Binary numbers) to produce an image.

A

Digital imaging

39
Q

Panoramic Technique

A

Developed 1959 by Dr YV Paatero

40
Q

PID Position indicatior device

A

the open - ended tube in a dental x-ray unit “the cone”

41
Q

First intraoral x-rays and new orlenas in 1896

A

Dr Edmond Kells

42
Q

Difference between shades or colors

A

Contrast

43
Q

Measurement unit used to compare the biological effects of different tissues by different forms of radiation.

A

Relative Biological Effectiveness (rbe)

44
Q

Area on the anode that directs the electrons to the focal spot during x-ray production

A

focusing cup

45
Q

the positive terminal of on electrolytic cell

A

Anode

DANB (1 decks)

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