Which factor is used to convert gray to sievert in calculating the Sievert?

Which factor is used to convert gray to sievert in calculating the Sievert?

• A. Radiation weighting factor
• B. Absorbed dose metric
• C. Energy weighting factor
• D. Time factor

Answer: (A)

To convert gray to sievert you multiply the absorbed dose by the radiation weighting factor, which accounts for how biologically damaging the radiation is. Gray measures energy deposited per mass, but different types of radiation cause different levels of biological harm for the same energy. The radiation weighting factor captures that difference. For common radiations like X-rays and gamma rays, this factor is 1; for alpha particles it’s much higher (20); neutrons vary with energy. So Gy × WR gives the equivalent dose in sieverts. If you later include tissue sensitivities to form an effective dose, you’d also include tissue weighting factors, but the direct gray-to-sievert conversion hinges on the radiation weighting factor. The other options don’t fit: absorbed dose is already in grays; energy weighting factor isn’t the standard term used here; time factor isn’t part of the dose conversion.

To convert gray to sievert you multiply the absorbed dose by the radiation weighting factor, which accounts for how biologically damaging the radiation is. Gray measures energy deposited per mass, but different types of radiation cause different levels of biological harm for the same energy. The radiation weighting factor captures that difference. For common radiations like X-rays and gamma rays, this factor is 1; for alpha particles it’s much higher (20); neutrons vary with energy. So Gy × WR gives the equivalent dose in sieverts. If you later include tissue sensitivities to form an effective dose, you’d also include tissue weighting factors, but the direct gray-to-sievert conversion hinges on the radiation weighting factor. The other options don’t fit: absorbed dose is already in grays; energy weighting factor isn’t the standard term used here; time factor isn’t part of the dose conversion.