NMTCB PET CERTIFICATION REVIEW EXAM
SCRIPT 2026 QUESTIONS WITH ANSWERS
◉ CPM/DPM x 100. Answer: Well Counter Effieciency
◉ [(TpxTb)/(Tp+TB)]. Answer: Effective Half-Life Calculation
◉ 100 rem. Answer: 1 Sv
◉ 100 rad. Answer: 1 Gy
◉ |(expected-actual)/actual)| x 100. Answer: Percentage Error
◉ Expected/Actual. Answer: Correction Factor
◉ Gross Cts - Bkgd Cts. Answer: Net Counts
◉ Gross Cpm - Bkgd Cpm / Efficiency. Answer: Cpm to Dpm
◉ (I1)(D1)^2 = (I2)(D2)^2. Answer: Inverse Square Law
,◉ 3.67 g/cm3
Z = 51
230 ns
100 light output. Answer: NaI (Tl) Scintillator
◉ 7.13 g/cm3
Z = 75
300 ns
15 Lightoutput. Answer: BGO Scintillators
◉ 6.71 g/cm3
Z = 59
60 ns
30 light output. Answer: GSO Scintillators
◉ 7.11 g/cm3
Z = 54
53 ns
76 light output. Answer: LYSO Scintillators
◉ 7.40 g/cm3
Z = 65
,40 ns
75 light output. Answer: LSO Scintillators
◉ T1/2 = 1.25 min (75 sec)
Max Energy = 3.36 MeV
Range in H20 = 16.5 mm
Decays to: Kr-82. Answer: Rb-82 Physical Properties
◉ T1/2 = 2.03
Max Energy = 1.72 MeV
Range in H20 = 8.2 mm
Decays to: N-15. Answer: O-15 Physical Properties
◉ T1/2 = 9.97
Max Energy = 1.19 MeV
Range in H20 = 5.4 mm
Decays to: 13-C. Answer: N-13 Physical Properties
◉ T1/2 = 20.3 min
Max Energy = 0.96 MeV
Range in H20 = 4.1 mm
Decays to: Br-11. Answer: C-11 Physical Properties
, ◉ T1/2 = 110 min
Max Energy = 0.635 MeV
Range in H20 = 2.4 mm
Decays to: O-18. Answer: F-18 Physical Properties
◉ 500 rads (5 Gy) in 1 hour at 1 m. Answer: Grave Danger: Very High
Radiation Area
◉ 100 mRem/ hr (1 mSv) @ 30 cm. Answer: Caution: High Radiation
Area
◉ 5 mR/hr (0.05 mSv) @ 30 cm. Answer: Caution: Radiation Area
◉ Where radioactivity is stored and can excee
2 mR/hr
1 mRem/hr. Answer: Caution: Radioactive Materials
◉ 50-200 mR/hr @ Surface
10 mR/hr @ 1 m. Answer: DOT Labels: Radioactive III (Yellow)
SCRIPT 2026 QUESTIONS WITH ANSWERS
◉ CPM/DPM x 100. Answer: Well Counter Effieciency
◉ [(TpxTb)/(Tp+TB)]. Answer: Effective Half-Life Calculation
◉ 100 rem. Answer: 1 Sv
◉ 100 rad. Answer: 1 Gy
◉ |(expected-actual)/actual)| x 100. Answer: Percentage Error
◉ Expected/Actual. Answer: Correction Factor
◉ Gross Cts - Bkgd Cts. Answer: Net Counts
◉ Gross Cpm - Bkgd Cpm / Efficiency. Answer: Cpm to Dpm
◉ (I1)(D1)^2 = (I2)(D2)^2. Answer: Inverse Square Law
,◉ 3.67 g/cm3
Z = 51
230 ns
100 light output. Answer: NaI (Tl) Scintillator
◉ 7.13 g/cm3
Z = 75
300 ns
15 Lightoutput. Answer: BGO Scintillators
◉ 6.71 g/cm3
Z = 59
60 ns
30 light output. Answer: GSO Scintillators
◉ 7.11 g/cm3
Z = 54
53 ns
76 light output. Answer: LYSO Scintillators
◉ 7.40 g/cm3
Z = 65
,40 ns
75 light output. Answer: LSO Scintillators
◉ T1/2 = 1.25 min (75 sec)
Max Energy = 3.36 MeV
Range in H20 = 16.5 mm
Decays to: Kr-82. Answer: Rb-82 Physical Properties
◉ T1/2 = 2.03
Max Energy = 1.72 MeV
Range in H20 = 8.2 mm
Decays to: N-15. Answer: O-15 Physical Properties
◉ T1/2 = 9.97
Max Energy = 1.19 MeV
Range in H20 = 5.4 mm
Decays to: 13-C. Answer: N-13 Physical Properties
◉ T1/2 = 20.3 min
Max Energy = 0.96 MeV
Range in H20 = 4.1 mm
Decays to: Br-11. Answer: C-11 Physical Properties
, ◉ T1/2 = 110 min
Max Energy = 0.635 MeV
Range in H20 = 2.4 mm
Decays to: O-18. Answer: F-18 Physical Properties
◉ 500 rads (5 Gy) in 1 hour at 1 m. Answer: Grave Danger: Very High
Radiation Area
◉ 100 mRem/ hr (1 mSv) @ 30 cm. Answer: Caution: High Radiation
Area
◉ 5 mR/hr (0.05 mSv) @ 30 cm. Answer: Caution: Radiation Area
◉ Where radioactivity is stored and can excee
2 mR/hr
1 mRem/hr. Answer: Caution: Radioactive Materials
◉ 50-200 mR/hr @ Surface
10 mR/hr @ 1 m. Answer: DOT Labels: Radioactive III (Yellow)
