The Committse on Fatholezicsfferts cf temicRadiattm
This Committee was ccmposed of sc. ientists well versed in
radiation pathology and chaired by
Dr, Shields Warren, Dixgctor
vu
of the Cancer Research Institute of tl.s Ncw England Deaccness
Hospital, Boston, Massachusetts,
and wes for five years~-1948 to
1952--Director of the Division of Blology and Medicine of the
Atomic Energy Commission,
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°
This group and subcommittees on blood, lung, delayed
effects, and toxicity of ingested radioactive materials reviewed
the
present state of knowledge and found that our knowledge of
immediate effects was much greater than for delayed effects,
They observed a five year lessened life span for American
radiologists, estimated to have received from a few roentgens to
1000r of exposure as compared with physicians not using
radiation--and agreed that until
we had more precise knowledge
of the cumulative effects of repeated small exposure of the wnole
body to radiation the rule of thumb recommended by the Genetics
Committee could equally well epply to medical effects,
That is,
no one should receive more than 50r total accumulated dese to the
reproductive cells by age 30 - and no more than 50r for each
decade thereafter,
This, they felt, would assure that any life
expectancy curtatiment would be exceedlagly minor,
likelinoad ‘of induced leuzemia minimal
as effects on the blacd-forming cezant
and the
Tney noted thet es rar
the intestinal tyvact;
¢tc.,
are concerned, nene of these erfecits hive been detected zicn5 thoce
» have adnerad te present re:
éc.e levels,
fs for the hazards from 3
the.
cenfirmed the
Vlin
Do. .cien
and redicastive
validity of existin
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