or sickness ang ather factore,.Regardless of the,couse of indiyidue),gi ffer-
ences from the wean, a smooth,degcription, of the body burden and activity ingescontin
a declining
basis
On+ thie
me
:
.
1
tion rate for, the. population 4 could be . adopted.
of
to
Internal Dose Equivajent
oa,
;
vous uptake model was used.
Rates
ue
de
bes
co,
a
Dog,
The spproximate instantaneous dose equivalent rates for the total body
were determined from the body, burden data illustrated in Figures 7, and 8 and
from the following equation|,
vad
it = ql,
to
the total body doseequivalent rate, aRen y~!,
ia
=
where
(4)
Tee
I = equilibrium dose equivalent rate to the total body per unit body
instanteous bady burden, pCi.
The approximate nature of the estimate was due to the assumption that the
radioactive atoms were distributed among the body tissues as they would be following constant continuous uptake for periods of time much greater than the mean
residence time for the total body.
assumed.
In the case of 90, 86% of equilibrium was
These assumptions were not used in the estimate of the total dose
equivalent.
In addition, since mean adult body burdens were computed, a factor
of 1.2 was needed to adjust for differences in body mass relative to a 70 kilu~
gram adult,
Table 5 lists values of I which were determined from information
given in ICRP59 and corrected for body mass differences.
30
‘yrgr,
‘ws
1
tegeerse
a
tear
ro
otig
wR ete
We te ge
ater lal
rae
.
tte
Looe.
eo cae
8
*
m
m=)
i
TS,
Ser hy
Seo
rr Ne
aie % RSS
Gee ig
burden, mRem y~! yen,
ot