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RADIONUCLIDE DOSECALIBRATORS ACTIVITY METERS
MANUAL AND AUTOMATIC COUNTING SYSTEMS FOR GAMMARADIATION
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acceptable limits acceptance testing amplifier gain controls analyzer base threshold background count rate collimator Conclusion Record confirm acceptable performance counting system crystal housing Data analysis detector head display device Energy Calibration field-of-view flood source Flood-field Uniformity follow-up action taken FWHM gamma radiation gamma-radiation measurements half-life indicate follow-up action instrument Interpretation of results keep statistical variations l37Cs gamma-radiation source Limits of acceptability linear graph paper maximum count rate measurements in vitro NaI(Tl nuclear medicine oscilloscope Perform a count PHA window photomultiplier voltage photon photopeak Pipettes pixels point source Preset a suitable procedure pulse-height analyzer base Purpose of test quality control radioactive radioactive contamination radioactive decay radionuclide concerned ratemeter record the count rectilinear scanner reference test Repeat steps results confirm acceptable routine testing scanner head scintillation camera source mounting spatial resolution suitable counting system for gamma-radiation Test of Energy test To test total absorption peak variations within acceptable width window