Question 1
Question
The anode's function is to accelerate electrons and then stop them
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
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Bremsstrahlung
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Photoelectric effect
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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
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Atom ejects a L shell electron
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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
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
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
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
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
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
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
Question 21
Question
During Compton scatter, the greater the angle the incident photon is scattered, the [blank_start]lower[blank_end] its energy
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
Question 23
Question
Pair production demonstrates the law of conservation of energy
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
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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 27
Question
ZnCdS does what?
Question 28
Question
Label the image intensifier flow chart
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
Question 30
Question
During each phase from photon entry to light output, the signal grows [blank_start]larger[blank_end]
Question 31
Question
What is the technique for mA when used for fluoroscopy?
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
Question 34
Question
Which magnification field will show the biggest image?
Question 35
Question
Having the focal point further back will do what to the image?
Question 36
Question
What happens during magnification?
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