NMTCB ACTUAL STUDY 2026 GUIDE QUESTIONS
AND ANSWERS SURE A+
✔✔Tc-99m energy - ✔✔140 keV
✔✔Tl-201 half life - ✔✔73 hours
✔✔Tl-201 energy - ✔✔68 kev, 81 kev
✔✔In-111 half life - ✔✔2.83 days
✔✔In-111 energy - ✔✔173 kev, 247 kev
✔✔Xe-133 half life - ✔✔5.3 days
✔✔Xe-133 energy - ✔✔81 keV
✔✔F-18 half life - ✔✔110 minutes
✔✔F-18 energy - ✔✔511 keV
✔✔Co-57 half life - ✔✔270 days
✔✔Co-57 energy - ✔✔122 keV
✔✔I-123 half life - ✔✔13.2 hours
✔✔I-123 energy - ✔✔159 keV
, ✔✔I-125 half life - ✔✔60 days
✔✔I-125 energy - ✔✔35 kev
✔✔I-131 half life - ✔✔8 days
✔✔I-131 energy - ✔✔365 kev
✔✔Ga-67 half life - ✔✔78 hours
✔✔Ga-67 energy - ✔✔92 kev, 184 kev, 300 kev
✔✔Rb-82 half life - ✔✔75 seconds
✔✔O-15 half life - ✔✔2.1 minutes
✔✔N-13 half life - ✔✔9 minutes
✔✔C11 half life - ✔✔20 minutes
✔✔Alpha decay - ✔✔atomic number decreases by 2
✔✔Beta Decay - ✔✔atomic number increases by 1
✔✔Positron Decay - ✔✔atomic number decreases by 1
✔✔Electron Capture - ✔✔atomic number decreases by 1
✔✔Gamma Emission - ✔✔No change in atomic number
✔✔QC on the dose calibrator - ✔✔Constancy, Linearity, Accuracy, Geometry
✔✔Constancy Definition - ✔✔Measures precision and is designed to show that, using a
long-lived source, usually 30 y Cs-137, reproducible readings are obtained day after day
on all the various isotope settings we are likely to use.
✔✔Constancy Directions - ✔✔Daily; The long-lived source is placed in the dose
calibrator. Activity is then measured on the Cs-137 setting and all other routinely used
settings on a daily basis. Values are recorded in the appropriate logbook and are
compared with recent values to determine if instrument is maintaining constancy on a
day-to-day basis.
AND ANSWERS SURE A+
✔✔Tc-99m energy - ✔✔140 keV
✔✔Tl-201 half life - ✔✔73 hours
✔✔Tl-201 energy - ✔✔68 kev, 81 kev
✔✔In-111 half life - ✔✔2.83 days
✔✔In-111 energy - ✔✔173 kev, 247 kev
✔✔Xe-133 half life - ✔✔5.3 days
✔✔Xe-133 energy - ✔✔81 keV
✔✔F-18 half life - ✔✔110 minutes
✔✔F-18 energy - ✔✔511 keV
✔✔Co-57 half life - ✔✔270 days
✔✔Co-57 energy - ✔✔122 keV
✔✔I-123 half life - ✔✔13.2 hours
✔✔I-123 energy - ✔✔159 keV
, ✔✔I-125 half life - ✔✔60 days
✔✔I-125 energy - ✔✔35 kev
✔✔I-131 half life - ✔✔8 days
✔✔I-131 energy - ✔✔365 kev
✔✔Ga-67 half life - ✔✔78 hours
✔✔Ga-67 energy - ✔✔92 kev, 184 kev, 300 kev
✔✔Rb-82 half life - ✔✔75 seconds
✔✔O-15 half life - ✔✔2.1 minutes
✔✔N-13 half life - ✔✔9 minutes
✔✔C11 half life - ✔✔20 minutes
✔✔Alpha decay - ✔✔atomic number decreases by 2
✔✔Beta Decay - ✔✔atomic number increases by 1
✔✔Positron Decay - ✔✔atomic number decreases by 1
✔✔Electron Capture - ✔✔atomic number decreases by 1
✔✔Gamma Emission - ✔✔No change in atomic number
✔✔QC on the dose calibrator - ✔✔Constancy, Linearity, Accuracy, Geometry
✔✔Constancy Definition - ✔✔Measures precision and is designed to show that, using a
long-lived source, usually 30 y Cs-137, reproducible readings are obtained day after day
on all the various isotope settings we are likely to use.
✔✔Constancy Directions - ✔✔Daily; The long-lived source is placed in the dose
calibrator. Activity is then measured on the Cs-137 setting and all other routinely used
settings on a daily basis. Values are recorded in the appropriate logbook and are
compared with recent values to determine if instrument is maintaining constancy on a
day-to-day basis.
