In this report, the Commission provides biokinetic and dosimetric models for 33 radiopharmaceuticals, as well as recommendations related to breast feeding for mothers who have undergone a nuclear medicine investigation. The report is based on Addenda 3-9 to Publication 53. Addenda 3-7 have been available on the ICRP website (www.icrp.org) as interim reports. The work has been carried out by a Joint Task Group of ICRP Committees 2 and 3. This publication provides biokinetic models, absorbed doses, and effective doses for the following radiopharmaceuticals: C-11-acetate; C-11-amino acids; C-11-brain receptor substances; C-11-methionine; F-18-amino acids; F-18-FET; F-18-FDG; In-111-monoclonal antibodies/fragments; I-123-fatty acids (BMIPP, IPPA); I-123-monoclonal antibodies/fragments; I-131-monoclonal antibodies/fragments; and Tl-201-ion. The publication also provides realistic maximum models for C-11 and F-18 substances, for which no specific models are available.