Primary Standardization Of Ga-67 Radiopharmaceuticals

The two-dimensional extrapolation technique and dead time extrapolation technique of 4 pi beta-gamma-coincidence counting were used to standardize the activity of Ga-67. The counting results of the two absolute counting techniques showed good agreement while the two-dimensional extrapolation technique could save about 50% of the total counting time in this study. The accuracy of the Capintec CRC-15R radionuclide calibrator used by the radiopharmacy of INER was studied in this research. A new calibration setting number, 99, was recommended to the radiopharmacy of INER in the Bayer 10 mL sterile empty vial geometry. (c) 2008 Elsevier Ltd. All rights reserved.