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Test 4

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test 4
Korie Hi
Quiz by Korie Hi, updated more than 1 year ago
Korie Hi
Created by Korie Hi almost 7 years ago
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Resource summary

Question 1

Question
The anode's function is to accelerate electrons and then stop them
Answer
  • True
  • False

Question 2

Question
What produces the electrons and what stops them?
Answer
  • Cathode, anode
  • Anode, cathode

Question 3

Question
What are 2 types of x-rays?
Answer
  • Characteristic
  • Bremsstrahlung
  • Photoelectric effect
  • Classical scatter

Question 4

Question
Which of the following happens during characteristic x-ray production
Answer
  • Electron hits the anode
  • Electron hits the cathode
  • Atom ejects a k shell electron
  • Atom ejects a L shell electron
  • L shell electron gives up energy moves into the K shell
  • L shell electron becomes an x-ray photon

Question 5

Question
Which of the following happens during Bremsstrahlung x-ray production
Answer
  • Incident electron is repelled by the orbiting electrons
  • Incident electron is pulled towards the orbiting electrons
  • Incident electron is repelled by the nucleus
  • Incident electron is pulled towards the nucleus
  • Electron turns and gains energy
  • Electron turns and loses energy
  • The energy that is lost turns into an x-ray photon
  • The energy that is gained turns into an x-ray photon

Question 6

Question
x-ray production efficiency: @100 kVp, less than [blank_start]1[blank_end]% of energy turns into x-rays @60 kVp, less than [blank_start]0.5[blank_end]% of energy turns into x-rays
Answer
  • 1
  • 0.5
  • 2
  • 4
  • 0.5
  • 1
  • 0.25
  • 2

Question 7

Question
mAs affects the [blank_start]quantity[blank_end] and kVp affects the [blank_start]quality[blank_end] of x-rays in the spectrum
Answer
  • quantity
  • quality
  • quality
  • quantity

Question 8

Question
Increase filtration, [blank_start]increase[blank_end] energy, [blank_start]decrease[blank_end] quantity
Answer
  • increase
  • decrease
  • decrease
  • increase

Question 9

Question
Filtration affects quality and quantity of x-rays in the spectrum
Answer
  • True
  • False

Question 10

Question
Gray (Gy): ([blank_start]rad[blank_end]) [blank_start]absorbed dose[blank_end] Sievert (Sv): ([blank_start]rem[blank_end]) [blank_start]equivalent dose[blank_end]
Answer
  • rad
  • rem
  • rem
  • rad
  • absorbed dose
  • equivalent dose
  • equivalent dose
  • absorbed dose

Question 11

Question
Double the mA you [blank_start]double[blank_end] the dose of radiation
Answer
  • double
  • half

Question 12

Question
If kVp increases 15% then mAs [blank_start]decreases[blank_end] by 50% If kVp is decreased by 15% then mAs [blank_start]doubles[blank_end]
Answer
  • decreases
  • increases
  • doubles
  • is halved

Question 13

Question
Doubling the SID [blank_start]reduces[blank_end] the intensity by 1/4
Answer
  • increases
  • decreases

Question 14

Question
Adding filtration improves [blank_start]quality[blank_end] and decreases [blank_start]quantity[blank_end]
Answer
  • quality
  • quantity
  • quantity
  • quality

Question 15

Question
Adding more filtration increases contrast
Answer
  • True
  • False

Question 16

Question
Classical scatter: [blank_start]unmodified[blank_end] or [blank_start]coherent[blank_end] Compton scatter: [blank_start]modified[blank_end] or [blank_start]incoherent[blank_end]
Answer
  • unmodified
  • modified
  • modified
  • unmodified
  • coherent
  • incoherent
  • incoherent
  • coherent

Question 17

Question
What type of scatter happens at low energy?
Answer
  • Thomson scatter
  • Compton scatter
  • Photoelectric effect

Question 18

Question
Photoelectric effect is characteristic radiation
Answer
  • True
  • False

Question 19

Question
What type of scatter occurs when an electron receives too much energy and is kicked out from its orbiting shell
Answer
  • Thomson scatter
  • Photoelectric effect
  • Compton scatter

Question 20

Question
Compton occurs in the inner shells
Answer
  • True
  • False

Question 21

Question
During Compton scatter, the greater the angle the incident photon is scattered, the [blank_start]lower[blank_end] its energy
Answer
  • lower
  • higher

Question 22

Question
Phototrasmutation or photodisintegration, a photon will interact with an atom and outputs neutron, proton or alpha particle which will change the properties of the atom
Answer
  • True
  • False

Question 23

Question
Pair production demonstrates the law of conservation of energy
Answer
  • True
  • False

Question 24

Question
Effects of ionizing radiation [blank_start]Chemical[blank_end]: free radials; turns diamonds green in reactors [blank_start]Luminescence[blank_end]: causes certain materials to give off light [blank_start]Photographic[blank_end]: exposes film [blank_start]Physiologic[blank_end]: burn skin, cause genetic changes [blank_start]Thermoluminescence[blank_end]: converts to light in certain chemicals when heated
Answer
  • Chemical
  • Excitation
  • Luminescence
  • Phosphorescence
  • Photographic
  • Physiologic
  • Psychologic
  • Thermoluminescence

Question 25

Question
What part of the image intensifier should not reflect, refract or bend light?
Answer
  • Input window
  • Electron lenses
  • Photocathode
  • Output window

Question 26

Question
Csl does what?
Answer
  • Turns x-rays to light
  • Turns light into electrons
  • Turns electrons into light

Question 27

Question
ZnCdS does what?
Answer
  • Turns electrons to light
  • Turns light into electrons
  • Turns x-rays to light

Question 28

Question
Label the image intensifier flow chart
Image:
Screen Shot 2017 05 09 At 5.35.16 Pm (image/png)
Answer
  • x-ray
  • electrons
  • light
  • input phosphor
  • photocathode
  • output phosphor
  • Csl
  • Sb-Cs
  • ZnCdS
  • input window
  • output window

Question 29

Question
The photocathode is positively charged
Answer
  • True
  • False

Question 30

Question
During each phase from photon entry to light output, the signal grows [blank_start]larger[blank_end]
Answer
  • larger
  • smaller

Question 31

Question
What is the technique for mA when used for fluoroscopy?
Answer
  • 5
  • 2
  • 10
  • 15

Question 32

Question
What is the technique for kVp when used for fluoroscopy?
Answer
  • 50-100
  • 60-120
  • 70-140
  • 80-130

Question 33

Question
The smaller the input the [blank_start]bigger[blank_end] the image in the end
Answer
  • bigger
  • smaller

Question 34

Question
Which magnification field will show the biggest image?
Answer
  • 12 cm
  • 17 cm
  • 25 cm

Question 35

Question
Having the focal point further back will do what to the image?
Answer
  • Enlarges it
  • Shrinks it

Question 36

Question
What happens during magnification?
Answer
  • Smaller field
  • Larger field
  • Less photons
  • More photons
  • Increases radiation exposure
  • Decreases radiation exposure

Question 37

Question
[blank_start]Brightness gain[blank_end]: system's ability to illuminate the image [blank_start]Gain[blank_end]: the ability of an amplifier to increase the power of input signals
Answer
  • Brightness gain
  • Gain
  • Gain
  • Brightness gain

Question 38

Question
Images are displayed in interlaced mode
Answer
  • True
  • False
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