ESTIMATION OF I-131 DOSE TO LACTATING BREAST (\s @ Recovery in milk 0.03 - 26.8% (Weaver and Dobson, 1960) <10% (Chiba and Ichikawa, 1968) e@ Transfer coefficient and time integral fy = 0.1 d/l be Th = 10° d/m e@ Assume equivalence of time integrals Tl = 10% d/g e Dose factor DF = 10 d/g x 0.2 MeV x 61.2 rad per (uCi-d/g)-MeV = 1.0 x 10° rad/,Cl LRA=16°