“ ~ Shot 9: 146713 93(0.651) 3047 x 10" x 107) “0.577 eit 0-040 If a js Shot 2% a = 20(33/4) = 270un by 4 days (This might be reduced by a factor of 2 if one Sr’* half life (97 hr) has passed before deposition within the bone has occurred, probably more rapid than this. be pat, Using equation &, with -2 Ay * Sehl x 10 R,°% hy © 00693 = 1.39 x 10° k, = 0.0229 50 Shot 9: However, deposition is a « 73(0.0229) (0,232 - 0.159) 1239 zx 10~ = il Shot 23 a= 11(1304) = 150 in 27 da te tlt, A situation analogous to that of Y7) oceurs hers. Only a enali. amount of Le seine pe expected to enter fromthe gut, but there also existe the buildup from the decay of ba“? once within the bone. It may be calaulated in the sane wafy as was the concentration of 1”, using equation (10) with = Sehl x10 BR, = 00229 a, 21.39 =x 10°" Roo 93 43°“ Oohl6 Tines as before .. ay _ Dos ARCHIVES