NMTCB - Instrument Operations and Quality Control UPDATED ACTUAL
Questions and CORRECT Answers
Uses Cs-137 for calibration
Quality control and calibration for sodium iodine (NaI) Calibration = daily
scintillation detector Uniformity = quarterly
Linearity = annually
Resolution = at installation or repair
they help identify the energy of the gamma rays emitted
by radioactive sources
photopeak
Full width half maximum
Gamma ray spectra
Gamma ray spectra provide a detailed view of the radi-
ation detected by scintillation detectors and are crucial
for identifying radionuclides, quantifying activity, and per-
forming quality control in nuclear medicine
represents the energy of gamma photons that are com-
Photopeak pletely absorbed by the detector, usually after undergoing
interactions such as the photoelectric effect
a measure used to quantify the width of a peak in a
spectrum, important when measuring energy resolution
Full width half maximum (FWHM) FWHM tells us how "sharp" or "broad" a peak is and
provides insight into the detector's ability to distinguish
between different energies
technique used in gamma spectroscopy to analyze the en-
ergies of gamma rays detected by scintillation detectors
Pulse height analysis
detailed pulse height spectrum that can be used for iden-
, tifying radionuclides, quantifying activity, and performing
quality control
Formula energy resolution
Formula sensitivity
Formula Chi-squared statistics
Gm meter or portable ionization chamber
Functions by reading ionization of radiation
Survey meter operations
Expressed in mR/hr
Calibration = installation or repair
Battery check = daily
Gas filled, suflcient sensitivity for contamination
Survey meter components
operate in rate mode
Calibration = before first use, at repair
Survey meter QC
Battery check = daily
Daily
Dose Calibrator constancy
done using long lived source, done on all radiopharm
settings
annually
Dose calibrator accuracy
two sources used (typically Cs137 and Co57)
Dose calibrator linearity
Questions and CORRECT Answers
Uses Cs-137 for calibration
Quality control and calibration for sodium iodine (NaI) Calibration = daily
scintillation detector Uniformity = quarterly
Linearity = annually
Resolution = at installation or repair
they help identify the energy of the gamma rays emitted
by radioactive sources
photopeak
Full width half maximum
Gamma ray spectra
Gamma ray spectra provide a detailed view of the radi-
ation detected by scintillation detectors and are crucial
for identifying radionuclides, quantifying activity, and per-
forming quality control in nuclear medicine
represents the energy of gamma photons that are com-
Photopeak pletely absorbed by the detector, usually after undergoing
interactions such as the photoelectric effect
a measure used to quantify the width of a peak in a
spectrum, important when measuring energy resolution
Full width half maximum (FWHM) FWHM tells us how "sharp" or "broad" a peak is and
provides insight into the detector's ability to distinguish
between different energies
technique used in gamma spectroscopy to analyze the en-
ergies of gamma rays detected by scintillation detectors
Pulse height analysis
detailed pulse height spectrum that can be used for iden-
, tifying radionuclides, quantifying activity, and performing
quality control
Formula energy resolution
Formula sensitivity
Formula Chi-squared statistics
Gm meter or portable ionization chamber
Functions by reading ionization of radiation
Survey meter operations
Expressed in mR/hr
Calibration = installation or repair
Battery check = daily
Gas filled, suflcient sensitivity for contamination
Survey meter components
operate in rate mode
Calibration = before first use, at repair
Survey meter QC
Battery check = daily
Daily
Dose Calibrator constancy
done using long lived source, done on all radiopharm
settings
annually
Dose calibrator accuracy
two sources used (typically Cs137 and Co57)
Dose calibrator linearity
