Table 3

Tissue Weighting Factors Used to Calculate Effective Dose in Sieverts

OrgansTissue Weighting factors
(ICRP103–2007)
Red bone marrow0.12
Colon0.12
Lung0.12
Stomach0.12
Breasts0.12
Gonads0.08
Bladder0.04
Liver0.04
Esophagus0.04
Thyroid0.04
Skin0.01
Bone surface0.01
Salivary glands0.01
Brain0.01
Remainder of body0.12
 Total1.00

Adapted from the International Commission on Radiological Protection (ICRP) (15).