You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is The SI unit of a dose equivalent of radiation is: and explain in detail?
Radiation absorbed dose, Dose equivalent, and exposure are often measured and stated in the older units called rad, rem, or roentgen respectively. International System of Units (SI) for radiation measurement is now the official system of measurement and uses the "gray" (Gy), "sieve" (Sv), Coulomb/Kg for absorbed dose, equivalent dose and exposure respectively. Conversions are as follows: 1 Gy = 100 rad 1 Sv = 100 rem 1 coulomb/ Kg= 3876 Roentgen Ref: Park's textbook of Preventive and Social Medicine, 21st edition, page-687