-_ Next viewgraph, please (LRA-17). factors for jiodine-131 then. This is simply a comparison of those This is what is in use, or what we estimate, for the dose factor for iodine-131 and extrathyroidal iodide concentrating tissues. For thyroid, we use a dose factor of 1.9 rad/uCi. lactating breast our estimate is -- excuse me. breast is 4.5 x 10-4 rad/uCi. depending on our approach. 10-3. For stomach, here -- assuming and the The dose factor for the For the lactating breast we have two values, 1 x 10-3 or 3 x 10-3. this stomach For the is -as an I For salivary glands, 7 x don't want to emphasize extrathyroidal 10 organ, total body, approximately 1 x 10-3. lt MIRD. i2 ICRP-30. iodide concentrating These are the dose factors from This is found in the Journal of Nuclear Medicine, Now the next slide (LRA-18) stomach 1975, and from summarizes some hypothetical dose esti- 14 mates -- well, this is actually patterned after one of our litigants, and 15 the assumption is that she is a nursing mother. 16 values in our printouts, assuming the adult female. 17 we made a calculation for the dose from iodine-131 to the lactating breast, These are the calculated Breast, 0.024. Now if we would have -- from jodine-131 alone we would have an additional 19 approximately 50 percent to be added to this calculated value. 20 case 21 approximates the dose from all radionuclides to the total body. 22 of the salivary glands, we estimate, Now in summary then, the dose to extrathyroidal 23 organs from iodine-131 24 now will follow with various other items. 25 26 oh, CHAIRMAN MOSELEY: 29 And in the millirads there questions Thank you very much. 27 28 18 for which iodide concentrating is very low relative to that to the thyroid. Are of Dr. Ng at this Lynn point.