ARRT Practice exam – core || with error-free answers.
Which of the following statements are correct regarding the link between radiation dose and
genetic effects?
1. The link has been demonstrated in human studies.
2. The link has been demonstrated in animal studies.
3. Increased risk to humans cannot be predicted with respect to an individual. correct answers 2
and 3 only
Which of the following changes in kabob will result in the greatest reduction of patient dose
when mAs is adjusted to compensate for the change?
A. Decrease kVp by 30%
B. Decrease kVp by 15%
C. Increase kVp by 15%
D. Increase kVp by 30% correct answers D. Increase kVp by 30%
Which of the following IR system speeds will result in the lowest patient dose? correct answers
B. Faster-speed IR system
What is the primary purpose of using gonad shields during radiography? correct answers Reduce
the likelihood of genetic effects
Which of the following are types of gonad shields?
1. Aperture
2. Contact
3. Shadow correct answers 2 and 3 only
When should gonad shielding be used? correct answers 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: correct answers repeat exposures
The limited operator can reduce repeat exposures by: correct answers clearly instructing patients
How does x-ray beam restriction minimize patient exposure? correct answers It limits the
radiation field to the area of interest.
What is a device that allows the limited operator to vary the size of the radiation field? correct
answers Collimator
How does filtration reduce patient exposure? correct answers Removes longer-wavelength
photons
What is the NCRP recommendation for the amount of total filtration? correct answers 2.5 mm
AL equiv
What are the three principal methods used to protect limited operators from unnecessary
radiation exposure? correct answers Time, distance, shielding
Which of the following is not a type of personal radiation shielding?
A. Apron
B. Glove
C. Thyroid shield
D. Shadow correct answers 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
Which of the following statements are correct regarding the link between radiation dose and
genetic effects?
1. The link has been demonstrated in human studies.
2. The link has been demonstrated in animal studies.
3. Increased risk to humans cannot be predicted with respect to an individual. correct answers 2
and 3 only
Which of the following changes in kabob will result in the greatest reduction of patient dose
when mAs is adjusted to compensate for the change?
A. Decrease kVp by 30%
B. Decrease kVp by 15%
C. Increase kVp by 15%
D. Increase kVp by 30% correct answers D. Increase kVp by 30%
Which of the following IR system speeds will result in the lowest patient dose? correct answers
B. Faster-speed IR system
What is the primary purpose of using gonad shields during radiography? correct answers Reduce
the likelihood of genetic effects
Which of the following are types of gonad shields?
1. Aperture
2. Contact
3. Shadow correct answers 2 and 3 only
When should gonad shielding be used? correct answers 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: correct answers repeat exposures
The limited operator can reduce repeat exposures by: correct answers clearly instructing patients
How does x-ray beam restriction minimize patient exposure? correct answers It limits the
radiation field to the area of interest.
What is a device that allows the limited operator to vary the size of the radiation field? correct
answers Collimator
How does filtration reduce patient exposure? correct answers Removes longer-wavelength
photons
What is the NCRP recommendation for the amount of total filtration? correct answers 2.5 mm
AL equiv
What are the three principal methods used to protect limited operators from unnecessary
radiation exposure? correct answers Time, distance, shielding
Which of the following is not a type of personal radiation shielding?
A. Apron
B. Glove
C. Thyroid shield
D. Shadow correct answers 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
