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Exam (elaborations)

MDCB review Exam Questions And Answers

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  • MDCB
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  • MDCB

1625 yr - ANS Ra-226 half life 3.8 d - ANS Rn-222 half life 5.3y - ANS Co-60 half life 30y - ANS Cs-137 half life 74 d - ANS Ir-192 hald life 27 d - ANS Au-198 half life 60d - ANS I-125 half lfie 17d - ANS Pd-103 h...

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  • September 6, 2024
  • 21
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • MDCB
  • MDCB
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MDCB review Exam Questions And
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1625 yr - ANS Ra-226 half life

3.8 d - ANS Rn-222 half life

5.3y - ANS Co-60 half life

30y - ANS Cs-137 half life

74 d - ANS Ir-192 hald life

27 d - ANS Au-198 half life

60d - ANS I-125 half lfie

17d - ANS Pd-103 half life

8d - ANS I-131 half life

13GY - ANS Spinal cord Dmax SRS 1 fx

12mm Pb - ANS Ra-226 HVL

12 mmPb - ANS Rn-222 HVL

11 mmPb - ANS Co-60 HVL

5.5 mmPb - ANS Cs-137 HVL

2.5 mmPb - ANS Ir-192 HVL

2.5 mmPb - ANS Au-198 HVL

0.025 mmPb - ANS I-125 HVL

0.008 mmPb - ANS Pd-103 HVL

,E/3.2 - ANS D90

E/2.8 - ANS D80

<10% - ANS V20 for lungs for SBRT

<12.5Gy - ANS Brainstem SRS 1 fx Dmax

Co-60, Teletherapy, GammaKnife, HDR, Prostate Seed Implant - ANS List in order amount
of activity from highest to lowest:
HDR, Co-60, Teletherapy, GammaKnife, Prostate Seed Implant

RX isodose Volume/PTV Volume - ANS Conformity Index

<10% - ANS Heart V25

D2 - ANS Maximum total dose in Gy to any point 2cm or greater away from the PTV in any
direction

V12<5-10cc - ANS Brain volume SRS 1 fx

2mm; 1 degree - ANS TG-142 suggests monthly QA tolerances for lateral, longitudinal, and
rotational couch positions for IMRT to be

2mm, 1% on a side - ANS TG-142 suggests monthly QA tolerances for mechanical/light
field coincidence for IMRT to be

2% - ANS TG-142 suggests monthly QA tolerances for electron output constancy for IMRT
to be

R50 - ANS the ratio of the volume of 50% of the prescription dose isodose to the volume of
the PTV

2mm - ANS TG-40 suggests daily QA tolerances for laser localization for simulators to be

2mm - ANS TG-40 suggests annual QA for medical accelerator tolerances for gantry
rotation isocenter to be

<32% - ANS Kidney V20

E, FS, d, SSD - ANS PDD is dependent on

E, FS, d - ANS TMR is dependent on

, 3.7 x 10^10 Bq - ANS 1 Ci =? Bq

10^6 - ANS mega (M)

alpha particle, 1MV, 250kVp, Co-60 - ANS Rank LET from highest to lowest: 1MV, alpha
particle, 250kVp, Co-60

1mSv - ANS 100mrad = ? dose equivalent

<12 Gy - ANS Optic Nerve/Chiasm SRS 1 fx Dmax

target, Primary collimator, flattening filter, dose chambers, secondary collimator - ANS
What is the correct order of components in treatment head to generate x-rays?

6Mv - ANS Which linac energy requires the highest beam current

Leukemia - ANS Which is considered a stochastic effect?
Cataracts, Erythema, Sterility, Leukemia

Slightly greater - ANS The lateral penumbra of a proton field is ______ as compared to a
photon field.

55Gy - ANS What is the ideal dose limit to 0.03cc of the brainstem?

Depth, FS, E - ANS TMR are dependent on what?

Dscatter/Dair under SAD conditions - ANS SAR is defined by

the pelvic sidewall/obturator nodes - ANS The location of point B in a T&O procedure is

(273.2 + T / 295)(760/P) - ANS Temp/Press correction formula

slightly greater - ANS The surface dose for a proton field is _______ as compared to a
photon field.

Linac QA - ANS TG142 is a document that gives recommendations on what?

Prostate - ANS Cs-131 is mostly common used in brachytherapy for which kind of
treatment?

1 - ANS The QF for electron is:

a portion of the target is not covered by the RX dose - ANS A Conformity Index of <1.0
means what?

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