Which of the following statements is true regarding radiation dose equivalents?

The statement regarding Gray and Sievert measuring different aspects of radiation is true. The Gray (Gy) is a unit of measurement that quantifies the absorbed dose of radiation, which indicates the amount of energy deposited by ionizing radiation in a material, typically biological tissue. In contrast, the Sievert (Sv) is a unit that accounts for the biological effects of that absorbed radiation, taking into consideration the type of radiation and its impact on human health. This distinction is crucial in the field of radiology and radiation safety because it helps professionals assess not just how much radiation is absorbed, but also how harmful that radiation can be depending on its nature.

Thus, while the Gray provides a measure of energy absorption, the Sievert incorporates a quality factor that reflects the varying levels of biological risk associated with different types of radiation, such as alpha particles, beta particles, and gamma rays. This understanding enables more informed decisions around safety practices and risk management in environments where radiation exposure is possible.