MDCB EXAM QUESTIONS AND ANSWERS. A+ GRADED
GUIDE.
The minimum nominal distance a tissue compensator should be placed from the skin surface without
affecting the skin sparing effect is:
A. 5.0 cm.
B. 10.0 cm.
C. 20.0 cm.
D. 25.0 cm.
C. 20.0 cm.
The radiation therapy technique which utilizes many shaped beams which may NOT conform to the
target volume to achieve a highly conformal distribution is:
A. conventional forward treatment planning.
B. intensity modulated radiation therapy (IMRT).
C. inverse treatment planning.
D. check summation analysis.
B. intensity modulated radiation therapy (IMRT).
Any error in the placement of adjacent fields during radiotherapy treatment is most likely to:
A. be equally serious for beams of any penumbra.
B. be more serious with beams of smaller penumbra.
C. have no impact the treatment outcome.
D. be more serious with beams of larger penumbra.
B. be more serious with beams of smaller penumbra.
An algorithm often used for electron beam dose calculations is:
A. scatter-air ratio (SAR) summations.
B. Batho & Young corrections.
C. Clarkson calculations.
D. pencil beams.
D. pencil beams.
Which calculation method independently calculates the primary and the scattered components of
dose at a point in the calculation volume?
A. Convolution superposition
B. Ray tracing
C. Manchester
D. Monte Carlo
A. Convolution superposition
Which of the following is excluded from "The Health Insurance Portability and Accountability Act of
1996"?
, A. universities.
B. life insurers.
C. public statistics authorities.
D. public health authorities.
C. public statistics authorities.
The chief purpose of a hospital's infection control program is to prevent:
A. respiratory infections.
B. urinary tract infections.
C. AIDS.
D. nosocomial infections.
D. nosocomial infections.
The five-year cure rate for a bladder cancer tumor treated with primary radiation is:
A. 0 - 5%
B. 5 - 10%
C. 25 - 30%
D. 50 - 70%
C. 25 - 30%
Which of the following nuclear transitions produces only gamma radiation?
A. isomeric
B. electron capture
C. isobaric
D. isotopic
A. isomeric
The efficiency of X-ray production (number of photons produced per incident electron flux) increases
with:
A. increasing binding energy.
B. decreasing atomic number.
C. decreasing critical absorption energy.
D. increasing incident electron energy.
D. increasing incident electron energy.
The fusion of MRI and CT images is used in head and neck tumors. The most appropriate MRI
sequence is a:
A. T1 image
B. T2 image
C. TR image
D. TS image
B. T2 image
GUIDE.
The minimum nominal distance a tissue compensator should be placed from the skin surface without
affecting the skin sparing effect is:
A. 5.0 cm.
B. 10.0 cm.
C. 20.0 cm.
D. 25.0 cm.
C. 20.0 cm.
The radiation therapy technique which utilizes many shaped beams which may NOT conform to the
target volume to achieve a highly conformal distribution is:
A. conventional forward treatment planning.
B. intensity modulated radiation therapy (IMRT).
C. inverse treatment planning.
D. check summation analysis.
B. intensity modulated radiation therapy (IMRT).
Any error in the placement of adjacent fields during radiotherapy treatment is most likely to:
A. be equally serious for beams of any penumbra.
B. be more serious with beams of smaller penumbra.
C. have no impact the treatment outcome.
D. be more serious with beams of larger penumbra.
B. be more serious with beams of smaller penumbra.
An algorithm often used for electron beam dose calculations is:
A. scatter-air ratio (SAR) summations.
B. Batho & Young corrections.
C. Clarkson calculations.
D. pencil beams.
D. pencil beams.
Which calculation method independently calculates the primary and the scattered components of
dose at a point in the calculation volume?
A. Convolution superposition
B. Ray tracing
C. Manchester
D. Monte Carlo
A. Convolution superposition
Which of the following is excluded from "The Health Insurance Portability and Accountability Act of
1996"?
, A. universities.
B. life insurers.
C. public statistics authorities.
D. public health authorities.
C. public statistics authorities.
The chief purpose of a hospital's infection control program is to prevent:
A. respiratory infections.
B. urinary tract infections.
C. AIDS.
D. nosocomial infections.
D. nosocomial infections.
The five-year cure rate for a bladder cancer tumor treated with primary radiation is:
A. 0 - 5%
B. 5 - 10%
C. 25 - 30%
D. 50 - 70%
C. 25 - 30%
Which of the following nuclear transitions produces only gamma radiation?
A. isomeric
B. electron capture
C. isobaric
D. isotopic
A. isomeric
The efficiency of X-ray production (number of photons produced per incident electron flux) increases
with:
A. increasing binding energy.
B. decreasing atomic number.
C. decreasing critical absorption energy.
D. increasing incident electron energy.
D. increasing incident electron energy.
The fusion of MRI and CT images is used in head and neck tumors. The most appropriate MRI
sequence is a:
A. T1 image
B. T2 image
C. TR image
D. TS image
B. T2 image
