MDCB Practice Set 3 - Test 12 Exam
Questions With 100% Verified Answers
1. The energy equivalent of the mass of an electron at rest is:
A. 0.220 MeV
B. 0.511 MeV
C. 0.667 MeV
D. 1.250 MeV -
correct answer ✅B
2. The force which holds the nucleus together is:
A. strong nuclear.
B. electromagnetic.
C. weak nuclear.
D. gravitational. -
correct answer ✅A
3. The X-ray contamination in electron beam therapy is a result of
the electrons interacting with
both the accelerator's collimating system and body tissues. The
type of interaction which takes
place is:
A. photoelectric
,MDCB Practice Set 3 - Test 12 Exam
Questions With 100% Verified Answers
B. Compton
C. pair production
D. bremsstrahlung -
correct answer ✅D
4. The energy required to remove an inner shell electron from its
orbit is called:
A. ionization energy
B. binding energy
C. kinetic energy
D. transition energy -
correct answer ✅B
5. Which of the following is a potential late toxicity of pre-operative
radiotherapy in the treatment
of rectal carcinoma?
A. small-bowel obstruction.
B. polycythemia.
C. lymphedema
, MDCB Practice Set 3 - Test 12 Exam
Questions With 100% Verified Answers
D. bladder perforation. -
correct answer ✅A
6. A customized bite block may be used to do which of the
following?
Secure a reproducible jaw position.
A. Reduce respiration motion of the oral cavity
B. Allow port film registration.
C. Preserve dental integrity during treatment. -
correct answer ✅A
7. Which of the following is true about prostate gland movement
during a course of external beam
radiotherapy?
A. It can be decreased by treating the patient with a full or empty
bladder.
B. It can be eliminated by the use of thermoplastic body molds.
C. It can be monitored by electronic portal imaging and implanted
prostate markers.
D. It is greatest in the transverse dimension. -
correct answer ✅C
Questions With 100% Verified Answers
1. The energy equivalent of the mass of an electron at rest is:
A. 0.220 MeV
B. 0.511 MeV
C. 0.667 MeV
D. 1.250 MeV -
correct answer ✅B
2. The force which holds the nucleus together is:
A. strong nuclear.
B. electromagnetic.
C. weak nuclear.
D. gravitational. -
correct answer ✅A
3. The X-ray contamination in electron beam therapy is a result of
the electrons interacting with
both the accelerator's collimating system and body tissues. The
type of interaction which takes
place is:
A. photoelectric
,MDCB Practice Set 3 - Test 12 Exam
Questions With 100% Verified Answers
B. Compton
C. pair production
D. bremsstrahlung -
correct answer ✅D
4. The energy required to remove an inner shell electron from its
orbit is called:
A. ionization energy
B. binding energy
C. kinetic energy
D. transition energy -
correct answer ✅B
5. Which of the following is a potential late toxicity of pre-operative
radiotherapy in the treatment
of rectal carcinoma?
A. small-bowel obstruction.
B. polycythemia.
C. lymphedema
, MDCB Practice Set 3 - Test 12 Exam
Questions With 100% Verified Answers
D. bladder perforation. -
correct answer ✅A
6. A customized bite block may be used to do which of the
following?
Secure a reproducible jaw position.
A. Reduce respiration motion of the oral cavity
B. Allow port film registration.
C. Preserve dental integrity during treatment. -
correct answer ✅A
7. Which of the following is true about prostate gland movement
during a course of external beam
radiotherapy?
A. It can be decreased by treating the patient with a full or empty
bladder.
B. It can be eliminated by the use of thermoplastic body molds.
C. It can be monitored by electronic portal imaging and implanted
prostate markers.
D. It is greatest in the transverse dimension. -
correct answer ✅C
