Comparison of new and old models

For many radionuclides, such as Tc-99m and I-131, the new models result in similar biokinetic functions as the old models, the difference between the function values being typically less than 10 %.

For some radionuclides, however, there are significant differences between the function values. So, for example, the whole-body retention of Cs-137 after inhalation of type F Cs-137 aerosols is now up to 30 % higher than according to the old models (see overestimation of dose)