What unit of measurement is used for the radiation-absorbed dose?

The radiation-absorbed dose is measured in Grays (Gy). The Gray is a standard unit in the International System of Units (SI) that quantifies the amount of ionizing radiation energy absorbed per kilogram of matter. One Gray is equal to one joule per kilogram, making it a direct measure of energy deposition in biological or physical media due to radiation exposure.

While the Rad is also a unit used historically to measure absorbed dose, it has been largely replaced by the Gray in modern usage, with one Gray being equivalent to 100 rads. This shift to the Gray reflects a standardization in radiation measurement practices, facilitating more uniform communication in scientific and medical contexts involving radiation.

Sieverts (Sv) measure biological effects of radiation, taking into account the type of radiation and its impact on human tissue, while the Curie (Ci) measures radioactivity, specifically the rate of decay of radioactive materials. Each of these units serves a different purpose in the field of radiology and nuclear science, but for measuring the dose absorbed by an object or person, the Gray is the appropriate unit to use.