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*MDCB: Mock Exam 2 With Questions And 100% ALL SURE ANSWERS
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JACKLINE*MDCB: Mock Exam 2 With Questions And 100% ALL SURE ANSWERS
Terms in this set (144)
A patient receiving treatment to the head and E
neck region has experienced a skin reaction and
mucositis at a total dose much lower than
anticipated. The radiation oncologist requests an
evaluation of the treatment. Which of the following
steps should be taken?
A. recalculate the treatment plan
B. ensure that the depth dose, build-up region,
wedge parameters, and other pertinent
information for the treatment unit are correct
C. review the treatment setup with the therapist
D. recalculate the monitor unit settings
E. all are correct
*MDCB: Mock Exam 2
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,For megavoltage dosimetry, TLD can provide C
accuracy of:
A. plus/minus 20%
B. plus/minus 10%
C. plus/minus 3%
D. plus/minus 1%
With megavoltage film dosimetry, isodose curves C
can be measured to within:
A. plus/minus 10%
B. plus/minus 7%
C. plus/minus 3%
D. plus/minus 1%
In megavoltage therapy, typical use(s) of diodes is D
for:
A. patient dosimetry
B. beam scanning
C. quality assurance
D. all of the answers are correct
*MDCB: Mock Exam 2
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,Which of the following is best suited for D
calibration of a megavoltage beam:
A. diode detector
B. thermoluminescence dosimetry
C. film
D. ionization chamber
The f-factor: D
A. is the roentgen to cGy conversion factor
B. is greatest for high Z materials and low energy
photons
C. is 0.873 in air
D. all of the answers are correct
E. none of the answers are correct
Clinical application of MLC include which of the D
following?
A. shaping of electron fields as a replacement for
cerrobend blocks
B. dynamic field shaping as a function of patient
respiration
C. field shaping without penumbra
D. modulating beam intensity
*MDCB: Mock Exam 2
3/36
, 9/5/24, 11:59 AM
The 104% isodose lines at the four corners of the C
target shown are due to the:
A. inhomogeneity of the femur
B. scatter from the femur
C. horns of the beams
D. weights of the lateral beams
E. use of a wrong algorithm
Exposure is: C
A. the amount of energy in Joules/kg transferred
from a photon beam to a material
B. only defined for photons and charged particles
below 3 MeV
C. the charge liberated by photons in a given
mass of air
D. the absorbed dose multiplied by the quality
factor
E. None of the answers
The quantity that an ionization chamber actually C
measures is:
A. roentgen
B. gray
C. charge
D. kerma
E. voltage
*MDCB: Mock Exam 2
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