LIMITED SCOPE OF RADIOGRAPHY
PRACTICE EXAM 2025 QUESTIONS AND
ANSWERS
What statements are correct regarding the link between radiation and genetic effects -
ANS The link has been demonstrated in animal studies .
Increased risk to humans cannot be predicted with respect to an individual.
The changes in kilovoltage (kVp) will result in the greatest reduction of patient dose, when
milliampere-seconds (mAs) is adjusted to compensate for the change - ANS Increase kVp by
30%
The following image receptor (IR) system speeds will result in the lowest patient dose -
ANS Faster speed IR system
The primary purpose of using gonad shields - ANS reduce the likelihood of genetic effects
Are gonad shields - ANS Contact and shadow
gonad shielding should be used - ANS when the gonads are within 5 cm of the radiation field
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@COPYRIGHT @THEBRIGHT 2025/2026
, the greatest cause of unnecessary radiation to patients that can be controlled by the limited
operator is - ANS repeat exposures
the limited operator can reduce repeat exposure - ANS clearly instructing patients
how does the x-ray beam restriction minimize patient exposure - ANS it limits the radiation
field to the area of interest
what is the device that allows the limited operator to vary the size of the radiation field -
ANS collimator
how does filtration reduce patient exposure - ANS removes longer-wavelength photons
The National Council on Radiation Protection and Measurements(NCRP) recommendation for
the amount of total filtration - ANS 2.5 mm Al equiv
Three principal methods used to protect limited operators from unnecessary radiation
exposure - ANS time, distance, and shielding
The following is not a type of personal radiation shielding - ANS Shadow
personnel shielding must be worn on the rare occasion during which the limited operator may
need to remain in the radiographic room during an exposure to assist the patient in maintaining
the proper position. What is the source of the greatest radiation hazard under this
circumstance.? - ANS scattered radiation from the patient
the term for radiation the escapes from the x-ray tube housing - ANS leakage radiation
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, why are limited operators prohibited from activities that result in direct exposure to the
primary x-ray beam - ANS they are considered occupationally exposed individuals
distance, as a method used to limit operator exposure, means that - ANS the operator should
maximize the distance from the source during an exposure
shielding worn for personnel protection is designed to attenuate what source of exposure -
ANS scatter radiation
the acronym for a common type of personnel dosimeter - ANS TLD
What is the recommended placement for personnel dosimeter on the body of the limited
operator - ANS the badge should be worn in the region of the collar on the anterior surface
of the body and outside the lead apron, if worn
The NCRP recommended annual effective dose limit for occupational exposure - ANS 5.0 rem
(0.05 Sv)
The NCRP recommended monthly effective (or equivalent) dose limit to the fetus for a pregnant
worker - ANS 0.05 rem (0.0005 Sv)
Radiation monitoring of personnel is required when what percentage of the annual
occupational effective dose limit is likely to be received - ANS 10%
The conventional (British system) radiation unit to express radiation intensity in the air -
ANS Roentgen
The conventional (British system) unit commonly used to report occupational dose to radiation
workers in the United States is the - ANS rem
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Page
@COPYRIGHT @THEBRIGHT 2025/2026
PRACTICE EXAM 2025 QUESTIONS AND
ANSWERS
What statements are correct regarding the link between radiation and genetic effects -
ANS The link has been demonstrated in animal studies .
Increased risk to humans cannot be predicted with respect to an individual.
The changes in kilovoltage (kVp) will result in the greatest reduction of patient dose, when
milliampere-seconds (mAs) is adjusted to compensate for the change - ANS Increase kVp by
30%
The following image receptor (IR) system speeds will result in the lowest patient dose -
ANS Faster speed IR system
The primary purpose of using gonad shields - ANS reduce the likelihood of genetic effects
Are gonad shields - ANS Contact and shadow
gonad shielding should be used - ANS when the gonads are within 5 cm of the radiation field
1
Page
@COPYRIGHT @THEBRIGHT 2025/2026
, the greatest cause of unnecessary radiation to patients that can be controlled by the limited
operator is - ANS repeat exposures
the limited operator can reduce repeat exposure - ANS clearly instructing patients
how does the x-ray beam restriction minimize patient exposure - ANS it limits the radiation
field to the area of interest
what is the device that allows the limited operator to vary the size of the radiation field -
ANS collimator
how does filtration reduce patient exposure - ANS removes longer-wavelength photons
The National Council on Radiation Protection and Measurements(NCRP) recommendation for
the amount of total filtration - ANS 2.5 mm Al equiv
Three principal methods used to protect limited operators from unnecessary radiation
exposure - ANS time, distance, and shielding
The following is not a type of personal radiation shielding - ANS Shadow
personnel shielding must be worn on the rare occasion during which the limited operator may
need to remain in the radiographic room during an exposure to assist the patient in maintaining
the proper position. What is the source of the greatest radiation hazard under this
circumstance.? - ANS scattered radiation from the patient
the term for radiation the escapes from the x-ray tube housing - ANS leakage radiation
2
Page
@COPYRIGHT @THEBRIGHT 2025/2026
, why are limited operators prohibited from activities that result in direct exposure to the
primary x-ray beam - ANS they are considered occupationally exposed individuals
distance, as a method used to limit operator exposure, means that - ANS the operator should
maximize the distance from the source during an exposure
shielding worn for personnel protection is designed to attenuate what source of exposure -
ANS scatter radiation
the acronym for a common type of personnel dosimeter - ANS TLD
What is the recommended placement for personnel dosimeter on the body of the limited
operator - ANS the badge should be worn in the region of the collar on the anterior surface
of the body and outside the lead apron, if worn
The NCRP recommended annual effective dose limit for occupational exposure - ANS 5.0 rem
(0.05 Sv)
The NCRP recommended monthly effective (or equivalent) dose limit to the fetus for a pregnant
worker - ANS 0.05 rem (0.0005 Sv)
Radiation monitoring of personnel is required when what percentage of the annual
occupational effective dose limit is likely to be received - ANS 10%
The conventional (British system) radiation unit to express radiation intensity in the air -
ANS Roentgen
The conventional (British system) unit commonly used to report occupational dose to radiation
workers in the United States is the - ANS rem
3
Page
@COPYRIGHT @THEBRIGHT 2025/2026
