Comparison of activity measurements in nuclear medicine services in the Czech Republic

Radionuclide calibrator used in nuclear medicine is the radiation detection equipment for measuring radiopharmaceutical activity. This instrument consists of an ionization chamber with an electrometer. This paper examines the variation in the amounts of radioactivity that is associated with dose calibration. The amount of radioactivity in each sample was measured by CMI and compared with values obtained from radionuclide calibrators over a year period. Measurements of serum bottles were within 10 % for 18F and 90Y, 10-15 % for 131I and 51Cr, 10-20 % for 99mTc, 15-20 % for 67Ga, 10-25 % for 111In, 15-30 % for 201Tl and 15-45 % for 123I. (author)