NMTCB REVIEW SET 2026 GUIDE QUESTIONS AND
ANSWERS SURE A+
✔✔Normal GBEF - ✔✔35% - 75%
✔✔Thyroid iodine uptake - ✔✔6 hr: 6 - 18%
24 hr: 10 - 35%
✔✔METs - ✔✔Metabolic Exercise Tolerance. The amount of oxygen the patient will
consume/min.
3.5 mL/min/kg = 1 MET
✔✔Isobar - ✔✔Same atomic mass, different atomic number
✔✔Isomer - ✔✔Same atomic number, same mass number, different energy states
✔✔Isotone - ✔✔Same number of neutrons, different number of protons
✔✔Isotope - ✔✔same number of protons, different number of neutrons
✔✔Direct action - ✔✔Cellular damage in response to direct absorption of ionizing
radiation
✔✔Indirect action - ✔✔Production of a free radical as a result of radiation exposure.
This free radical then goes on to inflict damage
✔✔Relative Biological Effectiveness (RBE) - ✔✔measurement unit used to compare the
biological effects of different tissues irradiated by different forms of radiation
, ✔✔Stochastic effects - ✔✔Associated with low levels of exposure to radiation over long
time periods.
Carcinogenesis and genetic damage such as changes in DNA are possible stochastic
effects of radiation exposure
✔✔Deterministic effects - ✔✔Result from a high dose of radiation over a short period of
time
✔✔Three basic measures of radiation exposure - ✔✔Roentgen (R), radiation absorbed
dose (rad), radiation equivalent to man (rem)
✔✔Roentgen - ✔✔Term applied to x-rays and gamma rays; the amount of radiation it
takes to produce 1 electrostatic charge in 1cc of dry air at standard temp and pressure
✔✔radiation absorbed dose (rad) - ✔✔Encompasses all types of radiation; unit used to
measure the amount of energy absorbed in any medium
✔✔Radiation Equivalent Man (rem) - ✔✔Unit of measure applied to radiation exposure
in humans; It is calculated by multiplying the number of rads by the relative biologic
effectiveness (RBE)
✔✔NRC - Reportable event - ✔✔the administration of therapeutic radiation doses to the
wrong patient, an administered dose that exceeds 20% of the total prescribed dose, and
a single therapeutic dose that varies by more than 20% from the written directive
✔✔Wipe Tests - ✔✔Performed on a weekly basis; must encompass an area of 100
square centimeters; areas where radioactive materials are prepared
✔✔Contaminated area classification - ✔✔Restricted area: >20,000 DPM/ 100 cm^2 for
Tc or Tl
It is lowered when contaminated with higher energy sources (I 131, In 111): >2,000
DPM/ 100 cm^2
✔✔Intersocietal Commission of the Accreditation of Nuclear Medicine Laboratories
(ICANL) - ✔✔An accrediting body that imposes standards for nuclear medicine facilities
that must be met for accreditation
✔✔Written Directive - ✔✔Required when administering therapeutic doses of radioactive
material. Must include: patient's name; name, dose, and route of administration of the
radiopharmaceutical; purpose for the administration of material; date and time of
administration; the signature of the authorized user performing or overseeing the
administration
ANSWERS SURE A+
✔✔Normal GBEF - ✔✔35% - 75%
✔✔Thyroid iodine uptake - ✔✔6 hr: 6 - 18%
24 hr: 10 - 35%
✔✔METs - ✔✔Metabolic Exercise Tolerance. The amount of oxygen the patient will
consume/min.
3.5 mL/min/kg = 1 MET
✔✔Isobar - ✔✔Same atomic mass, different atomic number
✔✔Isomer - ✔✔Same atomic number, same mass number, different energy states
✔✔Isotone - ✔✔Same number of neutrons, different number of protons
✔✔Isotope - ✔✔same number of protons, different number of neutrons
✔✔Direct action - ✔✔Cellular damage in response to direct absorption of ionizing
radiation
✔✔Indirect action - ✔✔Production of a free radical as a result of radiation exposure.
This free radical then goes on to inflict damage
✔✔Relative Biological Effectiveness (RBE) - ✔✔measurement unit used to compare the
biological effects of different tissues irradiated by different forms of radiation
, ✔✔Stochastic effects - ✔✔Associated with low levels of exposure to radiation over long
time periods.
Carcinogenesis and genetic damage such as changes in DNA are possible stochastic
effects of radiation exposure
✔✔Deterministic effects - ✔✔Result from a high dose of radiation over a short period of
time
✔✔Three basic measures of radiation exposure - ✔✔Roentgen (R), radiation absorbed
dose (rad), radiation equivalent to man (rem)
✔✔Roentgen - ✔✔Term applied to x-rays and gamma rays; the amount of radiation it
takes to produce 1 electrostatic charge in 1cc of dry air at standard temp and pressure
✔✔radiation absorbed dose (rad) - ✔✔Encompasses all types of radiation; unit used to
measure the amount of energy absorbed in any medium
✔✔Radiation Equivalent Man (rem) - ✔✔Unit of measure applied to radiation exposure
in humans; It is calculated by multiplying the number of rads by the relative biologic
effectiveness (RBE)
✔✔NRC - Reportable event - ✔✔the administration of therapeutic radiation doses to the
wrong patient, an administered dose that exceeds 20% of the total prescribed dose, and
a single therapeutic dose that varies by more than 20% from the written directive
✔✔Wipe Tests - ✔✔Performed on a weekly basis; must encompass an area of 100
square centimeters; areas where radioactive materials are prepared
✔✔Contaminated area classification - ✔✔Restricted area: >20,000 DPM/ 100 cm^2 for
Tc or Tl
It is lowered when contaminated with higher energy sources (I 131, In 111): >2,000
DPM/ 100 cm^2
✔✔Intersocietal Commission of the Accreditation of Nuclear Medicine Laboratories
(ICANL) - ✔✔An accrediting body that imposes standards for nuclear medicine facilities
that must be met for accreditation
✔✔Written Directive - ✔✔Required when administering therapeutic doses of radioactive
material. Must include: patient's name; name, dose, and route of administration of the
radiopharmaceutical; purpose for the administration of material; date and time of
administration; the signature of the authorized user performing or overseeing the
administration
