TY JOUR TI To Improve Accuracy of Radionuclide Therapy Dosimetry Planning Using Monte Carlo Method KW radionuclide therapy KW dosimetry planning KW tumor foci KW radiopharmaceutical accumulation KW activity determination KW Monte-Carlo method JO Medical Radiology and radiation safety AU Narkevich, B.Y. AU Goncharov, M.. AU Lysak, Y.. AU Shiryaev, S.V. PY 2017 IS 62 PB Federal Medical Biological Agency of Russia