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WorksheetsX-ray Interactions
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
kVp mainly controls...
a)
Quality
b)
Quantity
c)
Time
d)
Tube current
2.
Quantity is mainly controlled by...
a)
mA
b)
time
c)
kVp
d)
mAs
3.
Which of the following is NOT synonymous with beam energy?
a)
quantity
b)
quality
c)
penetrating power
d)
kVp
4.
The amount of energy absorbed per unit mass is called
a)
effective dose
b)
absorption
c)
absorbed dose
d)
a super fun dance party
5.
What is the Z number for Tungsten?
a)
64
b)
72
c)
74
d)
75
6.
The glass window of the x-ray tube serves as what type of filtration?
a)
inherent
b)
added
c)
total
d)
unnecessary
7.
Which is NOT true of filtration?
a)
"hardens" the x-ray beam
b)
raises the effective energy of the x-ray beam
c)
removes low energy x-ray photons
d)
raises patient dose
8.
What is the usual filtration material that may be added to the x-ray tube?
a)
Copper
b)
Aluminum
c)
Lead
d)
Carbon
9.
The x-rays that emerge from the glass window of the x-ray tube are called....
a)
Compton radiation
b)
Coherent radiation
c)
Primary radiation
d)
Scatter radiation
10.
The air gap technique and grids are used to...
a)
reduce the amount of scatter that reaches the IR
b)
decrease patient dose
c)
attenuate the primary x-ray beam
d)
remove directly transmitted x-ray photons
11.
In direct transmission, primary x-ray photons...
a)
do not interact with the patient
b)
are absorbed by the patient
c)
scatter within the patient
d)
are attenuated
12.
Which is responsible for image fog?
a)
large angle scatter
b)
direct transmission
c)
small angle scatter
d)
absorption
13.
During a Compton interaction, an incoming x-ray photon interacts with...
a)
the nucleus of an atom
b)
a K-shell electron
c)
an outer shell electron
d)
a free electron
14.
As kVp increases, photoelectric absorption...
a)
increases
b)
decreases
15.
Which of the following has the strongest electron binding energy?
a)
N-shell
b)
M-shell
c)
L-shell
d)
K-shell
16.
The number of x-rays emitted per inner shell vacancy is called...
a)
the Auger effect
b)
photoelectric absorption
c)
characteristic radiation
d)
fluorescent yield
17.
Compact bone has a Zeff of...
a)
7.4
b)
7.6
c)
13.4
d)
13.8
18.
As mass density of human tissue increases, absorption...
a)
decreases
b)
increases
19.
Positive contrast media enhances the occurrence of photoelectric absorption in soft tissue.
a)
true
b)
false
20.
Which is the basis for PET scanning?
a)
Photodisintegration
b)
Pair Production
c)
Compton interaction
d)
Photoelectric absorption
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