SAFETY / RADIATION PROTECTION STUDY GUIDE EXAM
LATEST 2026/2027 UPDATED VERIFIED QUESTIONS AND
SOLUTIONS A+ PASS GUARANTEED|COMPLETE STUDY
GUIDE WITH 100% ACCURATE QUESTIONS &ANSWERS.
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Which two of the following are included in the total filtration of the x-ray beam? (Select two)
A) added filtration
B) inherent filtration
C) collimation
D) gravity filtration Answer: A and B) total filltration of the x-ray beam includes added an
inherent filtration. Any filltration that occurs outside the tube and housing and before the image
receptor is considered added filtration. Filtration material is added to absorb low energy
photons.
Inherent filtration is a result of the composition of the tube and housing and it includes The
glass envelope of the tube, the dielectric oil
That surrounds the tube, and the glass window of the housing. Collimation happens after the
beam exits the tube. Although it is used to protect the patient as well, it is not filtration.
According to the national Council of radiation protection and measurement (NCRP) Total
filtration that is permanently fixed in the useful being for fluoroscopic equipment that operate
higher than 70 killer voltage peak (kVp) May not be less then
A) 1.5 millimeters aluminum equivalent
1
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,B) 2.0 millimeters aluminum equivalent
C) 2.5 millimeters aluminum equivalent
D) 3.0 millimeters aluminum equivalent Answer: C) 2.5
Radiation with a high rate of Linear energy transfer (LET) Will result in which three of the
following? (Select three)
A) rapid energy deposition
B) concentrated tissue damage
C) increase risk of biologic harm
D) increase transmission of radiation Answer: A,B, C) radiation with a high rate of Linear energy
transfer will result in rapid energy deposition, concentrated tissue damage, and increase risk of
biologic harm. High rate LET radiation transfers more radiation energy to the patient at a higher
rate, causing more concentrated damage (since the radiation does not exit the patient like with
LET) and leaving more potential for biologic harm.
The movement or flow of particles on the surface of a conducting material is known as
A) space change
B) voltage
C) electrical current
D) spiked current Answer: C) do you electrical current is the movement or the flow of electrons
on the surface of a conducting material. It is useful to think of the measurement of current as
the number of electrons blowing past a given point per unit of time (Usually per second).
2
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,What is released during a photoelectric interaction as the electrons cascade to fill the void left
by the ejected inner shell electron?
A) Characteristic x-ray photon
B) scattered x-ray photon
C) scattered electron
D) primary radiation Answer: A) A characteristic X-ray photon is released during a photo electric
interaction as the electrons cascade to fill the void left by the ejected inner shell electron. Since
there is a difference in binding energies between the outer and inner electron shells and energy
cannot be created nor destroyed, this energy difference must be released. The creation of
characteristic radiation from the photoelectric effect is commonly known as secondary
radiation.
Scattered x-ray photons are produced by a different interactions, while primary radiation is
produced at the target of the x-ray tube. Scattered electrons are not released during the x-ray
interactions with matter.
Current federal standards limit entrance skin exposure rate of general purpose intensified
fluoroscopic units to a maximum of
A) 10 milligrams per hour
B) 10 milligrams per minute
C) 100 milligrams per minute
D) 100 milligrams per hour Answer: C) current federal standards limit entrance skin exposure
rates of general purpose intensified fluoroscopic units to a maximum of 100 mg/min. This
measurement is taken at table top, with the image intensifier entrance surface at a prescribed
30 cm (12 inches) above the table. This limit for general purpose fluoroscopic systems has been
3
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, imposed to give protection against patients accidentally receiving skin damaging entrance those
levels in short periods of time.
Compared to the energy of the incident photon, the energy of a Compton scattered photon is;
A) increased
B) decreased
C) equal Answer: B) compared to the energy of the intimate photon, the energy of a Compton
scattered photon is decreased. During Compton interaction, the incident photon energy is
divided between the ejected electron and the scatter photon. Therefore, the Internet photon
will always have more energy than the scattered photon.
Fluoroscopically equipment does not automatically report radiation exposure, which two of the
following should be documented:
A) cumulative exposure time
B) The number of images taken
C) The amount of contrast media you
D) The calculations of dose area product (DAP) Answer: A and B) If fluoroscopic equipment does
not automatically report radiation exposure, cumulative exposure time and the number of
images taken should be documented. The calculations of those area product do not need to be
reported and amount of contrast media used is not relevant to reporting radiation exposure.
What effect will decreasing collimation (larger exposure field) have on the patient's effective
dose when using a fixed technique?
A) Increase patient effective dose
B) decrease patient effective dose
4
APPHIA - Crafted with Care and Precision for Academic Excellence.
LATEST 2026/2027 UPDATED VERIFIED QUESTIONS AND
SOLUTIONS A+ PASS GUARANTEED|COMPLETE STUDY
GUIDE WITH 100% ACCURATE QUESTIONS &ANSWERS.
EXCELLENCE GUARANTEED.
Which two of the following are included in the total filtration of the x-ray beam? (Select two)
A) added filtration
B) inherent filtration
C) collimation
D) gravity filtration Answer: A and B) total filltration of the x-ray beam includes added an
inherent filtration. Any filltration that occurs outside the tube and housing and before the image
receptor is considered added filtration. Filtration material is added to absorb low energy
photons.
Inherent filtration is a result of the composition of the tube and housing and it includes The
glass envelope of the tube, the dielectric oil
That surrounds the tube, and the glass window of the housing. Collimation happens after the
beam exits the tube. Although it is used to protect the patient as well, it is not filtration.
According to the national Council of radiation protection and measurement (NCRP) Total
filtration that is permanently fixed in the useful being for fluoroscopic equipment that operate
higher than 70 killer voltage peak (kVp) May not be less then
A) 1.5 millimeters aluminum equivalent
1
APPHIA - Crafted with Care and Precision for Academic Excellence.
,B) 2.0 millimeters aluminum equivalent
C) 2.5 millimeters aluminum equivalent
D) 3.0 millimeters aluminum equivalent Answer: C) 2.5
Radiation with a high rate of Linear energy transfer (LET) Will result in which three of the
following? (Select three)
A) rapid energy deposition
B) concentrated tissue damage
C) increase risk of biologic harm
D) increase transmission of radiation Answer: A,B, C) radiation with a high rate of Linear energy
transfer will result in rapid energy deposition, concentrated tissue damage, and increase risk of
biologic harm. High rate LET radiation transfers more radiation energy to the patient at a higher
rate, causing more concentrated damage (since the radiation does not exit the patient like with
LET) and leaving more potential for biologic harm.
The movement or flow of particles on the surface of a conducting material is known as
A) space change
B) voltage
C) electrical current
D) spiked current Answer: C) do you electrical current is the movement or the flow of electrons
on the surface of a conducting material. It is useful to think of the measurement of current as
the number of electrons blowing past a given point per unit of time (Usually per second).
2
APPHIA - Crafted with Care and Precision for Academic Excellence.
,What is released during a photoelectric interaction as the electrons cascade to fill the void left
by the ejected inner shell electron?
A) Characteristic x-ray photon
B) scattered x-ray photon
C) scattered electron
D) primary radiation Answer: A) A characteristic X-ray photon is released during a photo electric
interaction as the electrons cascade to fill the void left by the ejected inner shell electron. Since
there is a difference in binding energies between the outer and inner electron shells and energy
cannot be created nor destroyed, this energy difference must be released. The creation of
characteristic radiation from the photoelectric effect is commonly known as secondary
radiation.
Scattered x-ray photons are produced by a different interactions, while primary radiation is
produced at the target of the x-ray tube. Scattered electrons are not released during the x-ray
interactions with matter.
Current federal standards limit entrance skin exposure rate of general purpose intensified
fluoroscopic units to a maximum of
A) 10 milligrams per hour
B) 10 milligrams per minute
C) 100 milligrams per minute
D) 100 milligrams per hour Answer: C) current federal standards limit entrance skin exposure
rates of general purpose intensified fluoroscopic units to a maximum of 100 mg/min. This
measurement is taken at table top, with the image intensifier entrance surface at a prescribed
30 cm (12 inches) above the table. This limit for general purpose fluoroscopic systems has been
3
APPHIA - Crafted with Care and Precision for Academic Excellence.
, imposed to give protection against patients accidentally receiving skin damaging entrance those
levels in short periods of time.
Compared to the energy of the incident photon, the energy of a Compton scattered photon is;
A) increased
B) decreased
C) equal Answer: B) compared to the energy of the intimate photon, the energy of a Compton
scattered photon is decreased. During Compton interaction, the incident photon energy is
divided between the ejected electron and the scatter photon. Therefore, the Internet photon
will always have more energy than the scattered photon.
Fluoroscopically equipment does not automatically report radiation exposure, which two of the
following should be documented:
A) cumulative exposure time
B) The number of images taken
C) The amount of contrast media you
D) The calculations of dose area product (DAP) Answer: A and B) If fluoroscopic equipment does
not automatically report radiation exposure, cumulative exposure time and the number of
images taken should be documented. The calculations of those area product do not need to be
reported and amount of contrast media used is not relevant to reporting radiation exposure.
What effect will decreasing collimation (larger exposure field) have on the patient's effective
dose when using a fixed technique?
A) Increase patient effective dose
B) decrease patient effective dose
4
APPHIA - Crafted with Care and Precision for Academic Excellence.
