Which statement best defines CEDE in internal dosimetry?

Which statement best defines CEDE in internal dosimetry?

• A. CEDE equals the product of CDE and tissue weighting factors
• B. CEDE equals the sum of each organ's CDE multiplied by its weighting factor
• C. CEDE equals the maximum CDE among all organs
• D. CEDE equals the ALI value for an intake

Answer: (B)

Committed effective dose is found by combining the organ-specific committed doses with how important each organ is to overall risk. Each organ has a committed dose equivalent (CDE) accumulated over the committed period after an intake, and each CDE is weighted by the tissue weighting factor that reflects that organ’s contribution to stochastic risk. Adding these weighted organ doses across all organs gives the committed effective dose (CEDE). This makes the statement that CEDE equals the sum of each organ’s CDE multiplied by its weighting factor the best description. CEDE isn’t just a simple product for one organ, nor is it the single largest organ dose, and it isn’t the intake limit value (ALI).

Committed effective dose is found by combining the organ-specific committed doses with how important each organ is to overall risk. Each organ has a committed dose equivalent (CDE) accumulated over the committed period after an intake, and each CDE is weighted by the tissue weighting factor that reflects that organ’s contribution to stochastic risk. Adding these weighted organ doses across all organs gives the committed effective dose (CEDE). This makes the statement that CEDE equals the sum of each organ’s CDE multiplied by its weighting factor the best description.

CEDE isn’t just a simple product for one organ, nor is it the single largest organ dose, and it isn’t the intake limit value (ALI).