MDCB CERTIFICATION |ACTUAL QUESTIONS AND
VERIFIED ANSWERS|BRAND NEW 2026-2027
UPDATE|GRADED A+
Question 1
What is the approximate density of healthy lung tissue?
A. 0.30 g/cc
B. 0.95 g/cc
C. 1.00 g/cc
D. 1.03 g/cc
CORRECT ANSWER
A
Question 2
2. The accelerator component that injects electrons into the linear accelerator is:
A. a klystron.
B. an electron gun.
C. a bending magnet.
D. a thyratron.
CORRECT ANSWER
B
Question 3
3. Radiation damage to the fetus resulting in severe birth defects would most often occur
when radiation was delivered at which time post-fertilization?
1
, A. 0 - 2 weeks
B. 3 - 12 weeks
C. 13 - 24 weeks
D. 23 - 32 weeks
CORRECT ANSWER
B
Question 4
4. The decay constant for a radioactive source that has a half-life of 60 days is:
A. 0.012.
B. 0.170.
C. 0.662.
D. 1.250.
CORRECT ANSWER
A
Question 5
5. The function of a maze to a megavoltage treatment room is to:
A. keep operators as remote from the machine as possible.
B. attenuate photons originating from the head of the linear accelerator.
C. separate the primary and scattered components of the beam.
D. minimize radiation levels at the door.
CORRECT ANSWER
D
2
VERIFIED ANSWERS|BRAND NEW 2026-2027
UPDATE|GRADED A+
Question 1
What is the approximate density of healthy lung tissue?
A. 0.30 g/cc
B. 0.95 g/cc
C. 1.00 g/cc
D. 1.03 g/cc
CORRECT ANSWER
A
Question 2
2. The accelerator component that injects electrons into the linear accelerator is:
A. a klystron.
B. an electron gun.
C. a bending magnet.
D. a thyratron.
CORRECT ANSWER
B
Question 3
3. Radiation damage to the fetus resulting in severe birth defects would most often occur
when radiation was delivered at which time post-fertilization?
1
, A. 0 - 2 weeks
B. 3 - 12 weeks
C. 13 - 24 weeks
D. 23 - 32 weeks
CORRECT ANSWER
B
Question 4
4. The decay constant for a radioactive source that has a half-life of 60 days is:
A. 0.012.
B. 0.170.
C. 0.662.
D. 1.250.
CORRECT ANSWER
A
Question 5
5. The function of a maze to a megavoltage treatment room is to:
A. keep operators as remote from the machine as possible.
B. attenuate photons originating from the head of the linear accelerator.
C. separate the primary and scattered components of the beam.
D. minimize radiation levels at the door.
CORRECT ANSWER
D
2
