MDCB Practice Set 5 - Test 13 Exam
Questions With 100% Verified Answers
1. The most radiosensitive phase for mental retardation in the fetus
from RT accidental exposure is:
A. 0-7 weeks.
B. 8-15 weeks.
C. 16-24 weeks.
D. more than 25 weeks. -
correct answer ✅B
2. A pencil beam kernel is generated by:
A. Monte Carlo model computation.
B. collapsed cone calculation.
C. fast Fourier transformation.
D. pencil beam derivation. -
correct answer ✅A
3. A radioactive source is considered to be isotropic if it
exhibitswhich of the following characteristics?
A. Summation of the total dose is proportional to the point source.
B. Dose at depth is variable in all directions based on the placement
of the source.
C. Intensity around the source is equal in all directions.
,MDCB Practice Set 5 - Test 13 Exam
Questions With 100% Verified Answers
D. The total dose is a function of the size of the source calculated
based on kerma rate. -
correct answer ✅C
4. For which of the following malignancies has hyperfractionated
radiation therapy been shown to significantly improve local control
compared with standard fractionation?
A. low-grade sarcomas
B. adult high-grade gliomas
C. head and neck cancer
D. inflammatory breast cancer -
correct answer ✅C
5. Linking a small group of computers within close proximity to each
other in order to share information is known as:
A. local area network.
B. network bridge.
C. application service provider.
D. client-based network. -
correct answer ✅A
, MDCB Practice Set 5 - Test 13 Exam
Questions With 100% Verified Answers
6. As per the American Brachytherapy Society guidelines, the dose
required to treat uveal melanomas with Iodine-125 plaque
brachytherapy is:
A. 50Gy prescribed to 0.5cm depth.
B. 65Gy prescribed to apex.
C. 85Gy prescribed to apex.
D. 100 Gy prescribed to 0.5cm depth. -
correct answer ✅C
7. What is the minimum recommended frequency and percentage
tolerance for photon output checks on a linear accelerator?
A. Daily, 2%
B. Daily, 3%
C. Weekly, 2%
D. Monthly, 3% -
correct answer ✅B
8. Which of the following statementsis true for clinical electron
beams?
A. The mean energy decreases as a quadratic function of depth.
B. The maximum energy is the same as the most probable energy.
Questions With 100% Verified Answers
1. The most radiosensitive phase for mental retardation in the fetus
from RT accidental exposure is:
A. 0-7 weeks.
B. 8-15 weeks.
C. 16-24 weeks.
D. more than 25 weeks. -
correct answer ✅B
2. A pencil beam kernel is generated by:
A. Monte Carlo model computation.
B. collapsed cone calculation.
C. fast Fourier transformation.
D. pencil beam derivation. -
correct answer ✅A
3. A radioactive source is considered to be isotropic if it
exhibitswhich of the following characteristics?
A. Summation of the total dose is proportional to the point source.
B. Dose at depth is variable in all directions based on the placement
of the source.
C. Intensity around the source is equal in all directions.
,MDCB Practice Set 5 - Test 13 Exam
Questions With 100% Verified Answers
D. The total dose is a function of the size of the source calculated
based on kerma rate. -
correct answer ✅C
4. For which of the following malignancies has hyperfractionated
radiation therapy been shown to significantly improve local control
compared with standard fractionation?
A. low-grade sarcomas
B. adult high-grade gliomas
C. head and neck cancer
D. inflammatory breast cancer -
correct answer ✅C
5. Linking a small group of computers within close proximity to each
other in order to share information is known as:
A. local area network.
B. network bridge.
C. application service provider.
D. client-based network. -
correct answer ✅A
, MDCB Practice Set 5 - Test 13 Exam
Questions With 100% Verified Answers
6. As per the American Brachytherapy Society guidelines, the dose
required to treat uveal melanomas with Iodine-125 plaque
brachytherapy is:
A. 50Gy prescribed to 0.5cm depth.
B. 65Gy prescribed to apex.
C. 85Gy prescribed to apex.
D. 100 Gy prescribed to 0.5cm depth. -
correct answer ✅C
7. What is the minimum recommended frequency and percentage
tolerance for photon output checks on a linear accelerator?
A. Daily, 2%
B. Daily, 3%
C. Weekly, 2%
D. Monthly, 3% -
correct answer ✅B
8. Which of the following statementsis true for clinical electron
beams?
A. The mean energy decreases as a quadratic function of depth.
B. The maximum energy is the same as the most probable energy.
