LIMITED SCOPE OF RADIOGRAPHY
PRACTICE EXAM QUESTIONS AND
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT
GUARANTEED SUCCESS!!!
What statements are correct regarding the link between radiation and genetic
effects?
✔✔ Answer:
The link has been demonstrated in animal studies
Increased risk in humans cannot be predicted for an individual person
What change in kilovoltage (kVp) results in the greatest reduction of patient dose
when mAs is adjusted accordingly?
✔✔ Answer: Increase kVp by 30%
Which image receptor (IR) system speed results in the lowest patient dose?
✔✔ Answer: Faster speed IR system
What is the primary purpose of using gonadal shielding?
✔✔ Answer: To reduce the likelihood of genetic effects
What types of gonadal shields are used in radiography?
✔✔ Answer: Contact shields and shadow shields
When should gonadal shielding be used?
✔✔ Answer: When the gonads are within 5 cm of the radiation field
,the greatest cause of unnecessary radiation to patients that can be controlled by the
limited operator is -ANSWER ✔✔repeat exposures
the limited operator can reduce repeat exposure -ANSWER ✔✔clearly instructing
patients
how does the x-ray beam restriction minimize patient exposure -ANSWER ✔✔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 -ANSWER ✔✔collimator
how does filtration reduce patient exposure -ANSWER ✔✔removes longer-
wavelength photons
The National Council on Radiation Protection and Measurements(NCRP)
recommendation for the amount of total filtration -ANSWER ✔✔2.5 mm Al equiv
Three principal methods used to protect limited operators from unnecessary
radiation exposure -ANSWER ✔✔time, distance, and shielding
The following is not a type of personal radiation shielding -ANSWER ✔✔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.? -ANSWER ✔✔scattered radiation from
the patient
, the term for radiation the escapes from the x-ray tube housing -ANSWER
✔✔leakage radiation
why are limited operators prohibited from activities that result in direct exposure to
the primary x-ray beam -ANSWER ✔✔they are considered occupationally
exposed individuals
distance, as a method used to limit operator exposure, means that -ANSWER
✔✔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 -ANSWER ✔✔scatter radiation
the acronym for a common type of personnel dosimeter -ANSWER ✔✔TLD
What is the recommended placement for personnel dosimeter on the body of the
limited operator -ANSWER ✔✔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 -
ANSWER ✔✔5.0 rem (0.05 Sv)
The NCRP recommended monthly effective (or equivalent) dose limit to the fetus
for a pregnant worker -ANSWER ✔✔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 -ANSWER ✔✔10%
PRACTICE EXAM QUESTIONS AND
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT
GUARANTEED SUCCESS!!!
What statements are correct regarding the link between radiation and genetic
effects?
✔✔ Answer:
The link has been demonstrated in animal studies
Increased risk in humans cannot be predicted for an individual person
What change in kilovoltage (kVp) results in the greatest reduction of patient dose
when mAs is adjusted accordingly?
✔✔ Answer: Increase kVp by 30%
Which image receptor (IR) system speed results in the lowest patient dose?
✔✔ Answer: Faster speed IR system
What is the primary purpose of using gonadal shielding?
✔✔ Answer: To reduce the likelihood of genetic effects
What types of gonadal shields are used in radiography?
✔✔ Answer: Contact shields and shadow shields
When should gonadal shielding be used?
✔✔ Answer: When the gonads are within 5 cm of the radiation field
,the greatest cause of unnecessary radiation to patients that can be controlled by the
limited operator is -ANSWER ✔✔repeat exposures
the limited operator can reduce repeat exposure -ANSWER ✔✔clearly instructing
patients
how does the x-ray beam restriction minimize patient exposure -ANSWER ✔✔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 -ANSWER ✔✔collimator
how does filtration reduce patient exposure -ANSWER ✔✔removes longer-
wavelength photons
The National Council on Radiation Protection and Measurements(NCRP)
recommendation for the amount of total filtration -ANSWER ✔✔2.5 mm Al equiv
Three principal methods used to protect limited operators from unnecessary
radiation exposure -ANSWER ✔✔time, distance, and shielding
The following is not a type of personal radiation shielding -ANSWER ✔✔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.? -ANSWER ✔✔scattered radiation from
the patient
, the term for radiation the escapes from the x-ray tube housing -ANSWER
✔✔leakage radiation
why are limited operators prohibited from activities that result in direct exposure to
the primary x-ray beam -ANSWER ✔✔they are considered occupationally
exposed individuals
distance, as a method used to limit operator exposure, means that -ANSWER
✔✔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 -ANSWER ✔✔scatter radiation
the acronym for a common type of personnel dosimeter -ANSWER ✔✔TLD
What is the recommended placement for personnel dosimeter on the body of the
limited operator -ANSWER ✔✔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 -
ANSWER ✔✔5.0 rem (0.05 Sv)
The NCRP recommended monthly effective (or equivalent) dose limit to the fetus
for a pregnant worker -ANSWER ✔✔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 -ANSWER ✔✔10%
