NMTCB Exam Review V2
1. Assume for a particular radionuclide that1 HVL = 3mm. If 24mm of lead isused to shield
a source, how many HVLs are used?: 8
2. Which of the following detectors contains a scintillation crystal?: uptakeprobe
3. Which of the following instruments has the highest detection efficiency?-
: well counter
4. What would the percentage of original exposure rate be if you applied 5HVLs?: 3.1
5. If you had a room that contained 11mCi of Tc99m, what appropriate signagewould you need
for the room?: Caution: Radioactive Materials
6. What is the maximum dose rate that a Yellow II package can have at thesurface?: no more
than 50mR/hr
7. What is the annual ALARA Level I limit for whole body exposures?: 500mrem
8. Upon receiving doses for the day, the radioactive White I package must beopened within
of delivery.: 3 hours
9. The NRC requires, upon package receipt, for the technologist to survey and wipe the
package. The unit that the NRC requires for survey reading tobe recorded in is , and wipe
test reading to be recorded in
.: mR/h; dpm
10. What is the correct DOT label for a radioactive package that has a surfacereading of 3.5
mR/h and a 1 meter reading of 0.08 mR/h?: Yellow II
11. The creates the rules and regulations for trans-
portation of radioactive materials.: Department of Transportation
12. The surface area for to be wiped for package receipt/disposal is:: 300 cm²
13. In the U.S. Nuclear Regulatory Commission states that the dose to the embryo/fetus of a
declared pregnant woman throughout the entire pregnancymust not exceed due to
occupational exposure.: 0.5 rem
14. In order to determine the disintegrations per minute of a wipe test, the technologist must
first know:: counts per minute of the wipe and the efficiency ofthe well counter
15. Dry radioactive waste that has a half-life of
may bedecayed in storage.: 120 days or less
16. What type of shielding should be used for a pure beta emitting radionu-clide?: plastic
17. What is the ALARA Level l annual limit for hands?: 50 rem
18. If a radiopharmaceutical is spilled on the floor, the first priority is to:: Re-strict access and
cover the area with absorbent paper
, 19. What is the annual dose limit for the general public?: 500 mrem
20. What is the SI unit for absorbed dose?: Gy
21. What is the CFR that addresses DOT requirements for transporting ra-dioactive
materials?: 49 CFR
22. What is the 1 meter survey limit for a yellow II radioactive package?: 1.0mR/h
23. The Department of Transportation requires Type A packages to have whatkind of
labeling?: Transport index, radionuclide and amount of radioactivity
24. 10 mSv is equivalent to how many mrem?: 1000
25. Which of the following is the most effective means of detecting low levels of removable
contamination?: wipe test
26. What sign would most likely be posted on the door of a nuclear medicine hot lab?:
Caution: Radioactive Materials
27. How should the NRC be notified after medical event occurs?: A telephone report is
required within 24 hours
28. Positron decay
or emission is when a is converted to
aneutron, a positron, a neutrino, and energy.: proton
29. Annihilation of a electron and a positron results in a pair of
gamma rays traveling degrees.: 0.511
MeV;180°
30. F-18 is an example of
decay process.: positron
31. X-rays and Gamma-rays have the same characteristics, but they are namedbased on their
origin.
X-rays are emitted from the electron shells, where gamma-rays are emittedfrom the .:
nucleus
32. A dose of Tc-99m has an activity of 26.3 mCi at 10:30. What is it's activity at14:10?: 17.2
mCi
33. The
decay factor for Tc-99m at 2 hours is: .:
0.794
34. Beta
particle emitting radionuclides should not be shielded by a high-Z material (such as lead)
because
interactions arelikely to occur.: Bremsstrahlung
35. What type of interaction occurs when a weak photon gives all of its energyto an inner
shell electron?: photoelectric effect
1. Assume for a particular radionuclide that1 HVL = 3mm. If 24mm of lead isused to shield
a source, how many HVLs are used?: 8
2. Which of the following detectors contains a scintillation crystal?: uptakeprobe
3. Which of the following instruments has the highest detection efficiency?-
: well counter
4. What would the percentage of original exposure rate be if you applied 5HVLs?: 3.1
5. If you had a room that contained 11mCi of Tc99m, what appropriate signagewould you need
for the room?: Caution: Radioactive Materials
6. What is the maximum dose rate that a Yellow II package can have at thesurface?: no more
than 50mR/hr
7. What is the annual ALARA Level I limit for whole body exposures?: 500mrem
8. Upon receiving doses for the day, the radioactive White I package must beopened within
of delivery.: 3 hours
9. The NRC requires, upon package receipt, for the technologist to survey and wipe the
package. The unit that the NRC requires for survey reading tobe recorded in is , and wipe
test reading to be recorded in
.: mR/h; dpm
10. What is the correct DOT label for a radioactive package that has a surfacereading of 3.5
mR/h and a 1 meter reading of 0.08 mR/h?: Yellow II
11. The creates the rules and regulations for trans-
portation of radioactive materials.: Department of Transportation
12. The surface area for to be wiped for package receipt/disposal is:: 300 cm²
13. In the U.S. Nuclear Regulatory Commission states that the dose to the embryo/fetus of a
declared pregnant woman throughout the entire pregnancymust not exceed due to
occupational exposure.: 0.5 rem
14. In order to determine the disintegrations per minute of a wipe test, the technologist must
first know:: counts per minute of the wipe and the efficiency ofthe well counter
15. Dry radioactive waste that has a half-life of
may bedecayed in storage.: 120 days or less
16. What type of shielding should be used for a pure beta emitting radionu-clide?: plastic
17. What is the ALARA Level l annual limit for hands?: 50 rem
18. If a radiopharmaceutical is spilled on the floor, the first priority is to:: Re-strict access and
cover the area with absorbent paper
, 19. What is the annual dose limit for the general public?: 500 mrem
20. What is the SI unit for absorbed dose?: Gy
21. What is the CFR that addresses DOT requirements for transporting ra-dioactive
materials?: 49 CFR
22. What is the 1 meter survey limit for a yellow II radioactive package?: 1.0mR/h
23. The Department of Transportation requires Type A packages to have whatkind of
labeling?: Transport index, radionuclide and amount of radioactivity
24. 10 mSv is equivalent to how many mrem?: 1000
25. Which of the following is the most effective means of detecting low levels of removable
contamination?: wipe test
26. What sign would most likely be posted on the door of a nuclear medicine hot lab?:
Caution: Radioactive Materials
27. How should the NRC be notified after medical event occurs?: A telephone report is
required within 24 hours
28. Positron decay
or emission is when a is converted to
aneutron, a positron, a neutrino, and energy.: proton
29. Annihilation of a electron and a positron results in a pair of
gamma rays traveling degrees.: 0.511
MeV;180°
30. F-18 is an example of
decay process.: positron
31. X-rays and Gamma-rays have the same characteristics, but they are namedbased on their
origin.
X-rays are emitted from the electron shells, where gamma-rays are emittedfrom the .:
nucleus
32. A dose of Tc-99m has an activity of 26.3 mCi at 10:30. What is it's activity at14:10?: 17.2
mCi
33. The
decay factor for Tc-99m at 2 hours is: .:
0.794
34. Beta
particle emitting radionuclides should not be shielded by a high-Z material (such as lead)
because
interactions arelikely to occur.: Bremsstrahlung
35. What type of interaction occurs when a weak photon gives all of its energyto an inner
shell electron?: photoelectric effect
