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Title: Osteosarcoma risk after simultaneous incorporation of the long-lived radionuclide sup 227 Ac and the short-lived radionuclide sup 227 Th

Journal Article · · Radiation Research; (USA)
DOI:https://doi.org/10.2307/3577558· OSTI ID:6992109
; ; ;  [1]
  1. GSF-Institut fuer Pathologie, Neuherberg (Germany, F.R.)

The effect of injection of 1.85 kBq/kg of the long-lived radionuclide {sup 227}Ac on the induction of osteosarcomas in female NMRI mice by different dose levels (18.5, 74, and 185 kBq/kg) of the short-lived radionuclide {sup 227}Th was investigated. The highest absolute osteosarcoma incidence was observed with the highest doses of {sup 227}Th. Addition of {sup 227}Ac resulted in an additional osteosarcoma incidence only at the lowest dose of {sup 227}Th and did not affect the osteosarcoma incidence resulting from higher doses of {sup 227}Th. The longest times to tumor appearance were observed with {sup 227}Ac alone. The latent period in two different age groups (4 weeks and 10-12 weeks) appeared to be similar following injection with combined doses of {sup 227}Th and {sup 227}Ac but different after injection of each radionuclide alone.

OSTI ID:
6992109
Journal Information:
Radiation Research; (USA), Vol. 121:1; ISSN 0033-7587
Country of Publication:
United States
Language:
English