TEDE is the total dose to the whole body including exposure to critical organs from external and internal sources. Which statement below best describes TEDE?

TEDE is the total dose to the whole body including exposure to critical organs from external and internal sources. Which statement below best describes TEDE?

• A. The total energy delivered to a single organ
• B. The total effective dose to the whole body from external and internal sources
• C. The annual dose limit
• D. The energy absorbed per kilogram of tissue

Answer: (B)

TEDE is about the overall risk-weighted dose to the whole body from all radiation sources, not just energy to a single area. It combines exposure from outside the body and radionuclides that are inside, and it uses tissue weighting factors to reflect that different organs have different sensitivities to radiation. This gives a single value in sieverts (or rem) that represents potential stochastic health effects for the entire body, rather than merely the energy deposited in one part of the body. So the best description is that TEDE is the total effective dose to the whole body from external and internal sources, expressed in a way that accounts for varying tissue sensitivities. The other ideas describe different concepts: energy to a single organ is an absorbed dose to that organ (in Gy); energy per kilogram is also essentially absorbed dose; the annual dose limit is a regulatory cap, not TEDE; and TEDE is not just energy absorbed per kilogram but a risk-weighted whole-body measure.

TEDE is about the overall risk-weighted dose to the whole body from all radiation sources, not just energy to a single area. It combines exposure from outside the body and radionuclides that are inside, and it uses tissue weighting factors to reflect that different organs have different sensitivities to radiation. This gives a single value in sieverts (or rem) that represents potential stochastic health effects for the entire body, rather than merely the energy deposited in one part of the body.

So the best description is that TEDE is the total effective dose to the whole body from external and internal sources, expressed in a way that accounts for varying tissue sensitivities. The other ideas describe different concepts: energy to a single organ is an absorbed dose to that organ (in Gy); energy per kilogram is also essentially absorbed dose; the annual dose limit is a regulatory cap, not TEDE; and TEDE is not just energy absorbed per kilogram but a risk-weighted whole-body measure.