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Flashcards in making x-rays Deck (30)
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1
Q

intra-oral x-ray machines include

A

control panel, extension arms, tube head

2
Q

control panel includes

A

master switch, indicator light, selector button, exposure button

3
Q

extension arm

A

suspend x-ray tube head, allows for movement and positioning of the tube head

4
Q

metal housing

A

the metal body of the tube head

5
Q

insulating oil

A

fills the housing and surrounds the x-ray tube, prevents overheating

6
Q

transformers

A

alters the voltage of the incoming electric current

7
Q

aluminum fillers/disks

A

filters out non-penetrating, longer wavelength Xrays

8
Q

lead collimator

A

limits the size of the Xray beam

9
Q

position-indicating device (PID)

A

a lead-lined cylinder that aims and shapes the x-ray beam

10
Q

heart of the x-ray generating system. is made of leaded-glass housing known as

A

x-ray tube

11
Q

what Xray tube does

A

prevents Xray from escaping in all directions

Air has been removed from the tube to create a vacuum

12
Q

Vacuum environment

A

allows electrons to flow with minimum resistance between the electrodes

13
Q

negative supplies the electrons necessary to generate Xrays.
Consists of a tungsten filament in a focusing cup made up of molybdenum

A

cathode

14
Q

positive acts as a target for electrons

Composed of tungsten target embedded In a large copper stem

A

anode

15
Q

produces electrons when heated, hotter than filament the more electrons produced

A

tungsten filament

16
Q

focuses the electrons into a narrow beam and directs the beam across the tube toward the tungsten target

A

molybdenum (focusing cup)

17
Q

copper

A

conducts the heat away from the target

18
Q

serves as a focal point and covers the bombarding electrons into x-ray photons

A

tungsten target

19
Q

PID (position indicating device)

A

aka cone
used to aim x-ray beam at the film
usually 8,12,16 inches in length

20
Q

older system

A

the traditional or standard system

21
Q

newer system

A

metric equivalent is known as SI system

22
Q

exposure

A

measurement of ionization in air produced by Xrays

23
Q

dose

A

the amount of energy absorbed by a tissue

24
Q

dose equivalent

A

compares biological effects of different types of radiation

25
Q

density

A

overall darkness or blackness of an image

26
Q

contrast

A

how sharply dark and light areas are differentiated or separated on an image.

27
Q

transformer

A

a device that is used to either increase or decrease the voltage in an electrical circuit

28
Q

step down transformer

A

used to decrease the voltage from the incoming 110- or 220-line voltage to the 3 to 5 V used by the filament circuit

29
Q

step-up transformer

A

used to increase the voltage from the incoming 110-2201 line.

30
Q

means braking radiation

A

bremsstrahlung radiation