ESTIMATION OF DOSE TO ETIC TISSUES FROM I-131,_-_
© Half life in ECF (ICRP-10)
Tea |7 osm
4
oo
OIe!
Mey 2o7
G
© Time integral of concentratians,
oo
ce
ECF
Tl «= 0.7/(2.7 x 10m!x 2.070")
= 1.26 x 1or?d/m
Fluids concentrated from ECF, and ETIC tissues
|
oy
OS
Th 9 1.26 x 10° R d/mi or d/g
“ORs fuld-to-plasma ratio
I|
@ Dose factor for ETIC tissues —
DF = 1.26 x 10°R d/g x 0.2 Mev
x 61.2 rad per (.Ci-d/g)-MeV
= 13 x 10% R rad/pCl
ee ee er eee
rs
“LRAW18. |