Radiology Flashcards

Exam study (34 cards)

1
Q

The vest covers only what % of radiation

A

80%

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2
Q

Anode is

A

positive +

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3
Q

Cathode is

A

Negative -

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4
Q

gas

A

Black

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5
Q

fat

A

Dark grey

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6
Q

water/fluid

A

Light grey

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7
Q

bone

A

White

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8
Q

KVP is

A

penetrating power

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9
Q

mA is

A

quantity of X-rays

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10
Q

The collimator controls

A

The size of the X-ray beam that can improves quality

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11
Q

What is the cassette tray for?

A

manual processed films

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12
Q

too much scatter will result in

A

poor X-ray quality and greater radiation exposure to patient and technician

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13
Q

What is the main reason for scattered radiation?

A

High kVp and poor collimation

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14
Q

the grid sits between the

A

table and cassette trey

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15
Q

the two steps of foot pedal

A

whirring is anode rotating second is firing of x-rays

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16
Q

decreased kVP is

A

increased contrass

17
Q

??? something about percent

18
Q

KVP is the only factor that controls

19
Q

Why do you need to measure the thickest part of the body?

A

because of the heel effect

20
Q

What is the purpose of the calipers?

A

measure the thickest part of the body

21
Q

What info do you obtain from the technique chart?

A

The setting to use for radiograph’s

22
Q

Tube stand

A

Vertical side
Source-imagine distance indicator

23
Q

X-ray tube

24
Q

Control Panel

A

Circuit breaker
settings for kVp, mA and time (sec)
remote exposure foot switch

25
Radiation safety Apparel
Apron Gloves Thyroid shield Glasses Dosimeter badge
26
On which side should you place the thickest part of the animal?
under the Cathode, due to anode heel effect
27
3 reasons to collimate x-ray beam
Reduce exposure to the patient. reduce exposure to technician. improve imagine quality by reducing scatter radiation.
28
What is a two-stage switch? what happens during each stage?
The first half activates the filament and the rotation anode. The second takes exposure.
29
What type of personal monitor device is used in our lab? Where is it worn?
Dosimetry badge and its worn outside the thyroids protector
30
When is it accepted for a part of the technician's body to be in the primary beam?
NEVER
31
How should led gloves and aprons be stored and why?
Gloves- vertically on holder to avoid moisture buildup. Apron- hung or layed flat to prevent cracks
32
What is a Potter-Bucky diaphragm? does our machine have one?
Bucky is a mechanical oscillating grid. no we don't have one ours is stationary grid.
33
What device would be most helpful to maintain a patient in proper ventrodorsal positioning?
A vitrogh?
34
what side is ideal for the animal to lay on in radiographs?
lateral recumbency