Why are neutron shielding materials typically paired (moderators with absorbers) in radiation protection?

Why are neutron shielding materials typically paired (moderators with absorbers) in radiation protection?

• A. The tissues contribute equally regardless of WT.
• B. The tissue with the higher tissue weighting factor WT contributes more to the effective dose.
• C. Only the tissue with the lower WT contributes.
• D. WT is ignored when organ doses are equal.

Answer: (B)