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MDCB 2024 EXAM SOLVED 100% CORRECT TO SCORE A+
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MDCB 2024 EXAM SOLVED 100% CORRECT TO SCORE A+
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MDCB 2024EXAM SOLVED
100% CORRECT
TO SCORE A+
Evatee 9/5/24 MDCB
,MDCB 2024 EXAM SOLVED 100% CORRECT
TO SCORE A+
Which one of the following dose volume histogram (DVH) results for a
pancreatic treatment plan of conventional fractionation meets QUANTEC
recommended dose tolerances?
A. 75% of the left kidney will receive 30 Gy.
B. 50% of the right kidney will receive 40 Gy.
C. 50% of the liver will receive 42 Gy.
D. 25% of the stomach will receive 45 Gy. Answer - D. 25% of the stomach will
receive 45 Gy.
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. Answer - D. pencil beams.
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. Answer - B. be more
serious with beams of smaller penumbra.
, A radiation oncology department has a selection of 6, 10, and 18 MV photon
beams. For a 7 beam prostate Intensity Modulated Radiation Therapy (IMRT)
plan, it would be appropriate to select a/an:
A. 6 MV photon beam because it would deliver no neutron dose and the lowest
doses to the tissue outside the planning target volume (PTV).
B. 6 MV photon beam because it would deliver some neutron dose, but give
the best dose distribution to the PTV.
C. 10 MV photon beam because it would deliver a lower neutron dose than an
18 MV photon beam and clinically acceptable doses to the bladder and rectum.
D. 10 MV photon beam because it would deliver no neutron dose and the
lowest doses to the tissue outside the PTV. Answer - A. 6 MV photon beam
because it would deliver no neutron dose and the lowest doses to the tissue
outside the planning target volume (PTV).
What can cause increased skin dose in IMRT for prostate cancer?
A. prone position
B. wedge under knees- a support device
C. use of high energy photons
D. carbon fiber couch Answer - D. carbon fiber couch
Characteristics of multileaf collimators, in current medical LINACs, include
which of the following:
A. accommodates all field sizes.
B. "scalloped" isodose curves in the penumbra region.
C. ability to conform to all possible field shapes.
D. inability to verify leaf shapes. Answer - B. "scalloped" isodose curves in the
penumbra region.
The minimum nominal distance a tissue compensator should be placed from
the skin surface without affecting the skin sparing effect is:
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