Bremsstrahlung radiation dose in Yttrium-90 therapy applications

摘要: The bremsstrahlung component of the decay scheme beta emitters has been traditionally ignored in internal dosimetry calculations. authors have estimated radiation dose from {sup 90}Y as a function distance point source liquid medium and to body organs distributed sources liver spleen. These estimates agree with measurements measured Rando phantom, give an estimate importance this contribution overall dosimetry. absorbed organ itself is very small compared that dose, but other not always negligible, especially when large amounts may be involved, therapy applications. 12 refs., 3 figs., tabs.