Figure: 25 TAC §289.202(c)(39)

ORGAN DOSE WEIGHTING FACTORS

Organ or Tissue wT
Gonads
Breast
Red bone marrow
Lung
Thyroid
Bone surfaces
Remainder
0.25
0.15
0.12
0.12
0.03
0.03
0.30*
Whole Body 1.00**

* 0.30 results from 0.06 for each of five "remainder" organs, excluding the skin and the lens of the eye, that receive the highest doses.

** For the purpose of weighting the external whole body dose, for adding it to the internal dose, a single weighting factor, wT = 1.0, has been specified. The use of other weighting factors for external exposure will be approved on a case-by-case basis until such time as specific guidance is issued.