Table D-5Tissue Weighting Factors for Calculating Effective Dose (or Effective Dose Equivalent) for Selected Tissues

TissueTissue Weighting factor
NRC (2011)
/ICRP26
NCRP115
and ICRP60
ICRP103
Bladder0.050.04
Bone marrow (red)0.120.120.12
Bone surface0.030.010.01
Brain0.01
Breast0.150.050.12
Colon0.120.12
Esophagus0.050.04
Gonads0.250.200.08
Liver0.050.04
Lung0.120.120.12
Salivary glands0.01
Skin0.010.01
Stomach0.120.12
Thyroid0.030.050.04
Subtotal0.700.950.88
Remainder0.300.050.12a
Total1.001.001.00

ICRP60 = International Commission on Radiological Protection, 1990 Recommendations of the ICRP

NCRP115 = National Council on Radiation Protection and Measurements. 1993. Risk Estimates for Radiation Protection, Report 115. Bethesda, Maryland

NRC = Nuclear Regulatory Commission, Title 10, Code of Federal Regulations, Part 20

a

ICRP Publication 103 remainder tissues include adrenals, extrathoracic (ET) region, gall bladder, heart, kidneys, lymphatic nodes, muscle, oral mucosa, pancreas, prostate, small intestine, spleen, thymus, uterus/cervix

From: APPENDIX D, OVERVIEW OF BASIC RADIATION PHYSICS, CHEMISTRY, AND BIOLOGY

Cover of Toxicological Profile for Radon
Toxicological Profile for Radon.
Keith S, Doyle JR, Harper C, et al.

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