Capstone Fall Comprehensive Test 3 questions with
verified answers
10CFR part 71 is a regulation that discusses what?
a. Environmental protection regulations for domestic licensing
b. Standards for protection against radiation
c. Statement of organization and general information
d.Packaging and transportation of radioactive material Ans✓✓✓
d.Packaging and transportation of radioactive material
59. Midpoint: What is the midpoint for (7,8) and (-8, -7).
a. (7.5, 7.5)
b. (-0.5, -0.5)
c. (-0.5, 0.5)
d. None of the above Ans✓✓✓ c. (-0.5, 0.5)
A brachytherapy medical event is where the administered dose differs
from the prescribed dose by:
a. 10%
b. 15%
c. 20%
d. 25% Ans✓✓✓ c. 20%
A shield is 1 TVL and 5 HVL thick. How much is attenuated?
,1. 99.7
2. 0.3
3. 99.0
4. None of the above Ans✓✓✓ 1. 99.7
A swipe for contamination outside of a package or a lead 'pig' should be
less than:
a. 1000 dpm
b. 1600 dpm
c. 2200 dpm
d. 2800 dpm Ans✓✓✓ c. 2200 dpm
AAPM TG-142 recommends that imaging dose be checked at what
frequency?
a. Weekly
b. Monthly
c. Annually
d. Just at acceptance Ans✓✓✓ c. Annually
AAPM TG-142 recommends that the MLC tolerance for positioning
when doing IMRT is:
a. 1mm
b. 2mm
,c. 5mm
d. 0.5mm Ans✓✓✓ a. 1mm
AAPM TG-51 is a document that gives recommendations on what?
a. Linac Quality Assurance
b. Management of Radiation Dose in CT
c. Management of Respiratory Motion
d.Linac Calibration Ans✓✓✓ d. Linac Calibration
Activity A:
· What is the Activity of the following Cesium-137 source?
· Jan 1, 2018: A = 10 mCi
· Jan 1, 2020: A= ?
a. 9.55 mCi
b. 9.55 Ci
c. 9.0 mCi
d. None of the above Ans✓✓✓ a. 9.55 mCi
An electron prescription is 200 cGy to the 95% line. The SSD is 100cm.
The VSD is 93cm. The energy is 9 MeV electron. The Cone Factor is
1.006 and the Cut-out factor is 1.022. What are the MU?
a. 205
, b. 207
c. 211
d. 213 Ans✓✓✓ a. 205
An example of a stochastic radiation effect is?
a. Erythema
b. Leukemia
c. Cataracts
d. Sterility Ans✓✓✓ b. Leukemia
Approximately how much longer would it take to calculate a plan if the
grid is changed from 2mm x 2mm x 2mm to 4mm x 4mm x 4mm?
a. 8 times more
b. 8 times less
c. 4 times less
d. None of the above Ans✓✓✓ b. 8 times less
Approximately, how many mCi Cs-137 are in an implant using 100 mgRa
equivalent.
a. 100 mCi
b. 250 mCi
c. 825 mCi
d. None of the above Ans✓✓✓ b. 250 mCi
verified answers
10CFR part 71 is a regulation that discusses what?
a. Environmental protection regulations for domestic licensing
b. Standards for protection against radiation
c. Statement of organization and general information
d.Packaging and transportation of radioactive material Ans✓✓✓
d.Packaging and transportation of radioactive material
59. Midpoint: What is the midpoint for (7,8) and (-8, -7).
a. (7.5, 7.5)
b. (-0.5, -0.5)
c. (-0.5, 0.5)
d. None of the above Ans✓✓✓ c. (-0.5, 0.5)
A brachytherapy medical event is where the administered dose differs
from the prescribed dose by:
a. 10%
b. 15%
c. 20%
d. 25% Ans✓✓✓ c. 20%
A shield is 1 TVL and 5 HVL thick. How much is attenuated?
,1. 99.7
2. 0.3
3. 99.0
4. None of the above Ans✓✓✓ 1. 99.7
A swipe for contamination outside of a package or a lead 'pig' should be
less than:
a. 1000 dpm
b. 1600 dpm
c. 2200 dpm
d. 2800 dpm Ans✓✓✓ c. 2200 dpm
AAPM TG-142 recommends that imaging dose be checked at what
frequency?
a. Weekly
b. Monthly
c. Annually
d. Just at acceptance Ans✓✓✓ c. Annually
AAPM TG-142 recommends that the MLC tolerance for positioning
when doing IMRT is:
a. 1mm
b. 2mm
,c. 5mm
d. 0.5mm Ans✓✓✓ a. 1mm
AAPM TG-51 is a document that gives recommendations on what?
a. Linac Quality Assurance
b. Management of Radiation Dose in CT
c. Management of Respiratory Motion
d.Linac Calibration Ans✓✓✓ d. Linac Calibration
Activity A:
· What is the Activity of the following Cesium-137 source?
· Jan 1, 2018: A = 10 mCi
· Jan 1, 2020: A= ?
a. 9.55 mCi
b. 9.55 Ci
c. 9.0 mCi
d. None of the above Ans✓✓✓ a. 9.55 mCi
An electron prescription is 200 cGy to the 95% line. The SSD is 100cm.
The VSD is 93cm. The energy is 9 MeV electron. The Cone Factor is
1.006 and the Cut-out factor is 1.022. What are the MU?
a. 205
, b. 207
c. 211
d. 213 Ans✓✓✓ a. 205
An example of a stochastic radiation effect is?
a. Erythema
b. Leukemia
c. Cataracts
d. Sterility Ans✓✓✓ b. Leukemia
Approximately how much longer would it take to calculate a plan if the
grid is changed from 2mm x 2mm x 2mm to 4mm x 4mm x 4mm?
a. 8 times more
b. 8 times less
c. 4 times less
d. None of the above Ans✓✓✓ b. 8 times less
Approximately, how many mCi Cs-137 are in an implant using 100 mgRa
equivalent.
a. 100 mCi
b. 250 mCi
c. 825 mCi
d. None of the above Ans✓✓✓ b. 250 mCi
