What is the mean marrow dose associated with?

What is the mean marrow dose associated with?

• A. Hematologic effects; no early effects; leukemia may be a late effect
• B. Immediate tissue damage
• C. Genetic effects
• D. No effect

Answer: (A)

Mean marrow dose refers to the amount of radiation absorbed by bone marrow, the tissue where blood cells are formed. Because bone marrow contains rapidly dividing cells, radiation exposure most clearly affects the hematologic system. At doses that don’t produce immediate, whole-body radiation syndrome, the marrow isn’t showing acute tissue injury, but the radiation can cause hematologic changes and, over time, increase the risk of leukemia as a late effect. So, the mean marrow dose is best described as being linked to hematologic effects, with leukemia potentially arising years after exposure.

Mean marrow dose refers to the amount of radiation absorbed by bone marrow, the tissue where blood cells are formed. Because bone marrow contains rapidly dividing cells, radiation exposure most clearly affects the hematologic system. At doses that don’t produce immediate, whole-body radiation syndrome, the marrow isn’t showing acute tissue injury, but the radiation can cause hematologic changes and, over time, increase the risk of leukemia as a late effect. So, the mean marrow dose is best described as being linked to hematologic effects, with leukemia potentially arising years after exposure.