Radium retention and dosimetry in the St. Bernard
The percentage total-body retention (R) of /sup 226/Ra was determined in 14 young adult St. Bernards for the first 4 years after injection. It was found that the /sup 222/Rn//sup 226/Ra ratio in the skeleton was similar to that measured previously for young adult beagles given /sup 226/Ra. Excretion of injected /sup 226/Ra averaged about 32% in the first 2 weeks, with about 2/3 of the total appearing in the feces. St. Bernards appear to retain more /sup 226/Ra than do beagles injected at the same age. The last two terms of the retention equation were used to calculate the average skeletal radiation dose rate and cumulative radiation dose normalized to each dog's individual retention measurements. Allowance was made in the calculations for the changing skeletal retention of /sup 222/Rn and its radioactive daughters as a function of time.
- Research Organization:
- Univ. of Utah, Salt Lake City
- DOE Contract Number:
- AC02-76EV00119
- OSTI ID:
- 5814285
- Journal Information:
- Radiat. Res.; (United States), Journal Name: Radiat. Res.; (United States) Vol. 95:1; ISSN RAREA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Kinetics
& Toxicology-- Animals
Plants
Microorganisms
& Cells
560172* -- Radiation Effects-- Nuclide Kinetics & Toxicology-- Animals-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALKALINE EARTH ISOTOPES
ALPHA DECAY RADIOISOTOPES
ANIMALS
BODY
CLEARANCE
DAYS LIVING RADIOISOTOPES
DISTRIBUTION
DOGS
DOSES
DOSIMETRY
EVEN-EVEN NUCLEI
EXCRETION
FUNCTIONS
HEAVY NUCLEI
ISOTOPE RATIO
ISOTOPES
MAMMALS
NUCLEI
ORGANS
RADIATION DOSES
RADIOISOTOPES
RADIONUCLIDE KINETICS
RADIUM 226
RADIUM ISOTOPES
RADON 222
RADON ISOTOPES
RETENTION FUNCTIONS
SKELETON
TISSUE DISTRIBUTION
VERTEBRATES
YEARS LIVING RADIOISOTOPES