A comparison of four radionuclide dose calibrators using various radionuclides and measurement geometries clinically used in nuclear medicine.

Purpose: Reliable quantification of radioactivity in nuclear medicine is becoming increasingly important in various therapeutic applications requiring a high accuracy of nuclear medicine measuring equipment, such as radionuclide calibrators. In this study the accuracy of four different radionuclide calibrators was assessed for Tc, In, Ga and F for measurement geometries clinically used.

Methods: Syringes and vials were prepared with a reference activity using a stock solution of which the activity concentration was determined using gamma-ray spectroscopy.