Key result
Irradiation of dog hearts with 60Co gamma rays produced pericardial effusion in 50% of dogs by 180 days at a dose of 1220 rad, and cardiac tamponade at 1500 rad, with dose-dependent fibrosis.
Why the study?
What is the dose-response relationship of 60Co gamma irradiation on the canine cardiovascular system?
Population
Dogs (canine model)
Design
Preclinical
Follow-up
180 days
Authors
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Hypothesis-generating for radiation cardiotoxicity thresholds; leaves open translation to human dose constraints.
What is the dose-response relationship of 60Co gamma irradiation on the canine cardiovascular system?
Irradiation of the canine heart causes dose-dependent structural damage, including decreased capillary volume, increased fibrosis, and pericardial effusion.
Gavin et al. (1982) studied this question. 60Co gamma ray irradiation was evaluated on Pericardial effusion and cardiac tamponade. Irradiation of dog hearts with 60Co gamma rays produced pericardial effusion in 50% of dogs by 180 days at a dose of 1220 rad, and cardiac tamponade at 1500 rad, with dose-dependent fibrosis.
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