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ARRT REGISTRY EXAM REVIEW NEWEST 2025/2026 ACTUAL EXAM
WITH COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS
(100% VERIFIED ANSWERS) |ALREADY GRADED A+| ||PROFESSOR
VERIFIED||
What is the amount of radiation exposure at waist level under a
protective lead apron?
A. The same as the exposure to the embryo-fetus
B. Zero
C. Lower than the exposure level of the embryo-fetus
D. About 10% of the level outside the lead apron - ANSWER-d.
About 10% of the level outside the lead apron
Deterministic effects of ionizing radiation include all of the
following EXCEPT:
A. Sterility.
B. Cancer.
C. Skin erythema.
D. Cataracts. - ANSWER-b. Cancer
The maximum exposure received by the patient is at:
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A. The gonads.
B. The area of interest.
C. The skin entrance to the body.
D. The skin exit to the body. - ANSWER-c. The skin entrance to
the body
Which of the following is the most sensitive personnel monitoring
device?
A. OSL
B. TLD
C. Film badge - ANSWER-a. OSL
Secondary barriers are intended to intercept:
A. Scatter radiation from the patient.
B. Leakage radiation from the x-ray tube.
C. Primary beam that exits the patient.
D. Both a and b - ANSWER-d. Both a and b
Diagnostic x-rays are considered to have an RBE of:
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A. 1
B. 2
C. 3
D. 4 - ANSWER-a. 1
What is a single-hit chromosome aberration?
A. Chromosome damage caused by a single x-ray photon
B. Chromosome damage to a single chromosome caused by a
single x-ray photon
C. A single chromosome broken in one location
D. All of the above - ANSWER-c. A single chromosome broken in
one location
Why is the embryo-fetus most sensitive in the first trimester?
A. No immune system
B. Poor circulation
C. Made up of large number of stem cells
D. Not sensitive at this stage - ANSWER-c. Made up of large
number of stem cells
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Research indicates that high levels of radiation follow which
model?
A. Linear quadratic nonthreshold
B. Linear quadratic threshold
C. Linear nonthreshold
D. Linear threshold - ANSWER-c. Linear nonthreshold
For x-rays and gamma rays approximately ____ of the biological
effects on tissue are the result of indirect actions.
A. 100 percent
B. 20 percent
C. 40 percent
D. 70 percent - ANSWER-d. 70 percent
Protective aprons and gloves are usually made of lead-
impregnated vinyl within the range of ____ lead equivalency.
A. 0.25-1.0 mm
B. 0.25-1.0 cm
ARRT REGISTRY EXAM REVIEW NEWEST 2025/2026 ACTUAL EXAM
WITH COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS
(100% VERIFIED ANSWERS) |ALREADY GRADED A+| ||PROFESSOR
VERIFIED||
What is the amount of radiation exposure at waist level under a
protective lead apron?
A. The same as the exposure to the embryo-fetus
B. Zero
C. Lower than the exposure level of the embryo-fetus
D. About 10% of the level outside the lead apron - ANSWER-d.
About 10% of the level outside the lead apron
Deterministic effects of ionizing radiation include all of the
following EXCEPT:
A. Sterility.
B. Cancer.
C. Skin erythema.
D. Cataracts. - ANSWER-b. Cancer
The maximum exposure received by the patient is at:
,2|Page
A. The gonads.
B. The area of interest.
C. The skin entrance to the body.
D. The skin exit to the body. - ANSWER-c. The skin entrance to
the body
Which of the following is the most sensitive personnel monitoring
device?
A. OSL
B. TLD
C. Film badge - ANSWER-a. OSL
Secondary barriers are intended to intercept:
A. Scatter radiation from the patient.
B. Leakage radiation from the x-ray tube.
C. Primary beam that exits the patient.
D. Both a and b - ANSWER-d. Both a and b
Diagnostic x-rays are considered to have an RBE of:
,3|Page
A. 1
B. 2
C. 3
D. 4 - ANSWER-a. 1
What is a single-hit chromosome aberration?
A. Chromosome damage caused by a single x-ray photon
B. Chromosome damage to a single chromosome caused by a
single x-ray photon
C. A single chromosome broken in one location
D. All of the above - ANSWER-c. A single chromosome broken in
one location
Why is the embryo-fetus most sensitive in the first trimester?
A. No immune system
B. Poor circulation
C. Made up of large number of stem cells
D. Not sensitive at this stage - ANSWER-c. Made up of large
number of stem cells
, 4|Page
Research indicates that high levels of radiation follow which
model?
A. Linear quadratic nonthreshold
B. Linear quadratic threshold
C. Linear nonthreshold
D. Linear threshold - ANSWER-c. Linear nonthreshold
For x-rays and gamma rays approximately ____ of the biological
effects on tissue are the result of indirect actions.
A. 100 percent
B. 20 percent
C. 40 percent
D. 70 percent - ANSWER-d. 70 percent
Protective aprons and gloves are usually made of lead-
impregnated vinyl within the range of ____ lead equivalency.
A. 0.25-1.0 mm
B. 0.25-1.0 cm
