Table 1.
Radionuclide Properties.
Figure 1.
Photon energy spectra as measured by the Canberra HPGe detector for A) background, B) F-18, C) Zr-89 and D) I-124.
Insets show close-up of 511 keV annihilation photon peak upon which calibrations were based.
Figure 2.
Activity versus calibration setting number as measured on a Capintec CRC-15R dose calibrator for A) Zr-89 and B) I-124, measured in different geometries.
Filled symbols identify the curves corresponding to the measurements with the copper filter; open symbols without the filter. Triangles correspond to the small volume in the 5 mL syringe, circles to the 3 mL volume in the 5 mL syringe and squares to the 10 mL volume in the liquid scintillation vial. Note that for I-124 the filled squares almost completely obscure the filled circles.
Table 2.
Recommended Calibration setting Numbers.
Table 3.
Error in Radioactivity when Standard Calibration Setting Numbers are Used.
Figure 3.
Plot of photon energy versus sensitivity for a Capintec CRC-15R dose calibrator.
(Reprinted with permission of Capintec Inc. from the CRC-15R Owner's Manual).