CNMT Exam #6 UPDATED ACTUAL Exam
Questions and CORRECT Answers
1. If one is receiving 20 mR/hr exposure at a distance of 3 m from a source, at what distance
would one received 500 mR/hr exposure?
a. 0.36 cm
b. 0.36 m
c. 60 cm
d. 0.60 cm - CORRECT ANSWER - c. 60 cm
2. If an area survey reveals an ambient radiation level of 7 mR/hr, which of the following
radioactive signs would be the best choice to display on the door leading to this area?
a. caution: radioactive materials
b. caution: radiation area
c. caution: high radiation area
d. grave danger: very high radiation area - CORRECT ANSWER - b. caution: radiation
area
3. An ionization chamber if left in integral mode for 10 min and records a total dose of 3 mR.
Which of the following area posting signs should be used on the door leading to this area?
a. caution: radioactive materials
b. caution: radiation area
c. caution: high radiation area
d. grave danger: very high radiation area - CORRECT ANSWER - b. caution: radiation
area
4. Which of the following area posting signs would not normally be found in a hospital?
,a. caution: radioactive materials
b. caution: radiation area
c. caution: high radiation area
d. grave danger: very high radiation area - CORRECT ANSWER - d. grave danger: very
high radiation area
5. Which of the following type of survey instruments would be best to use to survey a spill for
removable contamination in a hot lab area where radioisotopes are being store?
a. GM detector
b. personal pocket dosimeter
c. dose calibrator with a wipe test
d. well counter with a wipe test - CORRECT ANSWER - d. well counter with a wipe test
6. Four HVLs reduce the amount of incident radiation exposure to what?
a. 12.5%
b. 6.25%
c. 3.125%
d. none of the above - CORRECT ANSWER - b. 6.25%
7. Which of the following is not required to be included in the records of a radioactive package
receipt check in process?
a. name of patient
b. name of radioisotope
c. amount of activity
d. both external and internal wipe checks - CORRECT ANSWER - a. name of patient
, 8. A package is reading 2 mR/hr at distance of 2 m, what is the appropriate DOT label for this
package?
a. DOT 1
b. DOT 2
c. DOT 3
d. no labeling is required - CORRECT ANSWER - b. DOT 2
9. The purpose of the transport index is:
a. to list the final destination of the package
b. to indicate the highest activity of the contents at 1 m from the source
c. not to give emergency personnel information about the contents of the package in an accident
d. not to list the radioisotopes in the package - CORRECT ANSWER - b. to indicate the
highest activity of the contents at 1 m from the source
10. If a patient who is having a bone scan urinates on the floor next to a camera, what would be
the best course of action to reduce radiation exposure?
a. let the radioactive urine decay to background
b. move the camera away from the spill
c. remove the spill with some absorbent material and cover any residual activity with a lead plate
or lead apron
d. notify the referring physician of a medical event - CORRECT ANSWER - c. remove the
spill with some absorbent material and cover any residual activity with a lead plate or lead apron
11. Which DOT radioactive level is entirely white?
a. DOT 1
Questions and CORRECT Answers
1. If one is receiving 20 mR/hr exposure at a distance of 3 m from a source, at what distance
would one received 500 mR/hr exposure?
a. 0.36 cm
b. 0.36 m
c. 60 cm
d. 0.60 cm - CORRECT ANSWER - c. 60 cm
2. If an area survey reveals an ambient radiation level of 7 mR/hr, which of the following
radioactive signs would be the best choice to display on the door leading to this area?
a. caution: radioactive materials
b. caution: radiation area
c. caution: high radiation area
d. grave danger: very high radiation area - CORRECT ANSWER - b. caution: radiation
area
3. An ionization chamber if left in integral mode for 10 min and records a total dose of 3 mR.
Which of the following area posting signs should be used on the door leading to this area?
a. caution: radioactive materials
b. caution: radiation area
c. caution: high radiation area
d. grave danger: very high radiation area - CORRECT ANSWER - b. caution: radiation
area
4. Which of the following area posting signs would not normally be found in a hospital?
,a. caution: radioactive materials
b. caution: radiation area
c. caution: high radiation area
d. grave danger: very high radiation area - CORRECT ANSWER - d. grave danger: very
high radiation area
5. Which of the following type of survey instruments would be best to use to survey a spill for
removable contamination in a hot lab area where radioisotopes are being store?
a. GM detector
b. personal pocket dosimeter
c. dose calibrator with a wipe test
d. well counter with a wipe test - CORRECT ANSWER - d. well counter with a wipe test
6. Four HVLs reduce the amount of incident radiation exposure to what?
a. 12.5%
b. 6.25%
c. 3.125%
d. none of the above - CORRECT ANSWER - b. 6.25%
7. Which of the following is not required to be included in the records of a radioactive package
receipt check in process?
a. name of patient
b. name of radioisotope
c. amount of activity
d. both external and internal wipe checks - CORRECT ANSWER - a. name of patient
, 8. A package is reading 2 mR/hr at distance of 2 m, what is the appropriate DOT label for this
package?
a. DOT 1
b. DOT 2
c. DOT 3
d. no labeling is required - CORRECT ANSWER - b. DOT 2
9. The purpose of the transport index is:
a. to list the final destination of the package
b. to indicate the highest activity of the contents at 1 m from the source
c. not to give emergency personnel information about the contents of the package in an accident
d. not to list the radioisotopes in the package - CORRECT ANSWER - b. to indicate the
highest activity of the contents at 1 m from the source
10. If a patient who is having a bone scan urinates on the floor next to a camera, what would be
the best course of action to reduce radiation exposure?
a. let the radioactive urine decay to background
b. move the camera away from the spill
c. remove the spill with some absorbent material and cover any residual activity with a lead plate
or lead apron
d. notify the referring physician of a medical event - CORRECT ANSWER - c. remove the
spill with some absorbent material and cover any residual activity with a lead plate or lead apron
11. Which DOT radioactive level is entirely white?
a. DOT 1
