Safety / Radiation Protection Study
Guide Exam Latest 2026/2027 Updated
Verified Questions and Solutions A+
Pass 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
- ANS - 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
B) 2.0 millimeters aluminum equivalent
C) 2.5 millimeters aluminum equivalent
D) 3.0 millimeters aluminum equivalent
- ANS - 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
- ANS - 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
- ANS - 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).
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
- ANS - 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
- ANS - 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
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
- ANS - 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)
- ANS - 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
Guide Exam Latest 2026/2027 Updated
Verified Questions and Solutions A+
Pass 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
- ANS - 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
B) 2.0 millimeters aluminum equivalent
C) 2.5 millimeters aluminum equivalent
D) 3.0 millimeters aluminum equivalent
- ANS - 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
- ANS - 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
- ANS - 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).
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
- ANS - 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
- ANS - 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
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
- ANS - 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)
- ANS - 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
