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ROENT > X-RAY MACHINE > Flashcards

X-RAY MACHINE Flashcards

1
Q

COMPONENT PARTS of an X-RAY MACHINE

A
  1. Control panel
  2. Extension arm/support arm
  3. Tubehead
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2
Q

Has the different dials and selections that control the
different factors for x-ray production

A

CONTROL PANEL

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3
Q

Controls or it shows the
highest point of which x-rays are produced

A

kVp indicator

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4
Q

Controls the number of
electrons needed in the production of x-rays

A

mA regulator (MiliAmperage)

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5
Q

Suspends the x-ray tubehead and houses the electrical
wires that extend from the control panel to the tubehead.

A

EXTENSION ARM

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6
Q

Allows the movement or adjustment of the tubehead
towards the area to be radiographed

A

EXTENSION ARM

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7
Q

A tightly sealed, heavy metal housing that contains the x-
ray tube that produces dental x-rays

A

TUBEHEAD

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8
Q

the heart of x-
ray generating system

A

X-ray tubehead

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9
Q

Direct the x-ray beam
to the area to be radiographe

A

PID

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10
Q

Contains the angulations that were used in
taking a radiograph. It has a 5-degree angulation

A

Number Scale

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11
Q

The tubehead and the cone is positioned
parallel to the ground

A

Zero Angulation

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12
Q

The tubehead and PID is pointing
downward

A

Positive Angulation

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13
Q

The tubehead and PID is pointing
upward

A

Negative Angulation

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14
Q

It is a lead-line structure or metal body that
surrounds your tubehead; protects the x-ray tube

A

Metal Housing

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15
Q

It absorbs heat produced during x-ray
production.

A

Insulating Oil/Gas

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16
Q

It restricts and controls
the size of the x-ray beam

A

Lead Collimator/Lead Diaphragm

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17
Q

These are layers of aluminum that
functions to absorb low energy forms of radiation that are
produced during x-ray production

A

Aluminum Disks

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18
Q

Functions to bring the incoming
voltage of 110 or 220 volts to 60,000-90,000 or 100,000
volts.

A

Step-up Transformer

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19
Q

Adjusts the incoming voltage of
110 or 220 volts to just 7-10 volts

A

Step-down Transformer

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20
Q

Adjusts the voltage incase there are
fluctuations of incoming power

A

Auto Transformer

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21
Q

vacuum tube that prevents x-rays from
escaping in all directions

A

LEADED GLASS HOUSING

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22
Q

allows x-rays produced by the x-ray tube to exit the x-ray
tube

A

UNLEADED GLASS WINDOW

23
Q

It is the negative electrode of your x-ray tube

A

CATHODE

24
Q

o Produces the electrons when heated
o Where energy or electrons are produced.

A

Tungsten Filament

25
Q

focusing cup

A

Molybdenum Cup

26
Q

Where the tungsten filament is embedded

A

Molybdenum Cup

27
Q

The positive electrode or positive side of the x-ray tube
• The direction of the flow of x-ray production

A

ANODE

28
Q

Where the tungsten plate / target is embedded

A

Copper stem

29
Q

The measurement of electrical force needed to move
electrons from a negative side (cathode) to a positive side
(anode) electrode

A

VOLTAGE

30
Q

Flow of electrical energy (electrons) through a circuit

A

ELECTRICAL CURRENT

31
Q

The current alternates between positive and negative,
resulting in a voltage waveform shaped like a sine wave.

A

ALTERNATING CURRENT

32
Q

The conversion of AC to DC

A

SELF-RECTIFICATION

33
Q

found in a 6ft extension cord

A

Activating button

34
Q

PARTS OF THE LOW VOLTAGE CIRCUIT

A

On-off switch
• mA control
• Step-down transformer

35
Q

PARTS OF THE HIGH VOLTAGE CIRCUIT

A

kVp selector

Timer

Activating button

36
Q

Refers to ionizing radiation

a. Expresses based on speed
b. Causes release of electrons from an atom
c. Long frequency or high wavelength
d. All of the given

A

B

37
Q

Electromagnetic radiation

a. Components are parallel to each other
b. Varies based on speed of travel
c. For both ionizing and non-ionizing radiation
d. None of the given

A

C

38
Q

DOES NOT refer to x-radiation
a. Can be focused
b. Low form of ionizing radiation
c. Has mass
d. Causes objects to fluoresce

A

C

39
Q

Voltage at which xrays are produced
a. kV
b. Either kV or kVp
c. kVP

A

B

40
Q

binding energy of an electron has to be overcomed for an electron to be removed from its orbit Statement 2: ionization occurs when an electron is moved to another orbit

a. both statements are not correct
b. Statement 1 is correct
c. Statement 2 is correct

A

A

41
Q

Where energy of electrons are xrays are produced except
a. Tungsten filament
b. Tungsten target
c. Focal spot

A

A

42
Q

Restricts the size of the xray beam

a. Cone
b. Actual focal size
c. Lead diaphragm
d. All of the given

A

C

43
Q

Highest voltage at which radiation is produced
a. kVp
b. b. KVP
c. c.mA

A

A

44
Q

Number of electrons moving in a circuit in dental xrays machine
a. Milliamperage
b. Amperage
c. Ampere
d. Any of the given

A

D

45
Q

Acts as filters

A. Aluminum
b. Molybdenum
c. Copper
d. lead

A

A

46
Q

Heart of the xray generating apparatus
a. High voltage circuit
b. Anode
c. Xray tubehead and tube
d. Xray tube

A

D

47
Q

Does not absorb heat produced during xray production
a. Copper
b. Oil
c. Molybdenum cup
d. All of the given

A

C

48
Q

Exposure time in seconds if exposure time is 30 impulses
a. 1 sec
b. 2 sec
c. 1⁄2 sec
d. 180 sec

A

C

49
Q

Releases electrons needed for xray production
a. all of the given
B. tungsten filament
C. Cathode
D. positive electrode

A

B

50
Q

Exposure time in impulses if exposure time given is 1 sec
a. 1⁄6 impulse
b. 120 umpulses
c. 60 impulses
d. 1/120 impulse

A

C

51
Q

Directs the xray beam to the area to be radiographed
a. Number scale
b. Xray tubehead
c. Xray tube
d. Position-indicating device

A

D

52
Q

Duration of xray produced every cycle
a. 1/120 sec
b. 60 sec
c. 1/60 sec
d. 1/30 sec

A

A

53
Q

in which part of the cycle is x rays produced
a. 2nd half of the cycle when the cathode is positive
b. first half of a cycle when the anode is
positive
c. 2nd half of a cycle as electrons interact
with the anode
d. first half of a cycle when the anode is
negative

A

B

54
Q

how many times does current in an dental xray machine changes
a. 120 times in a second
b. 1/60th of a second
c. 01/120th of a second
d. 60x in a second

A

D

ROENT (13 decks)

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