Equivalent dose in radiation measurement is expressed in which unit?

Equivalent dose in radiation measurement is expressed in millisieverts (mSv). This unit is used to quantify the biological effect of radiation on human tissues, taking into account the type of radiation and its impact on health. The concept of equivalent dose allows for the comparison of the effects of different types of radiation (such as alpha, beta, and gamma radiation) based on their ability to cause biological damage.

Milligray (mGy) measures the absorbed dose of radiation and refers to the amount of energy deposited in a specific mass of tissue but does not account for the biological effects of that radiation. Joule per kilogram (J/kg) also measures energy deposition but is typically used to express the SI units of absorbed dose with the same limitation as milligray. Coulomb per kilogram (C/kg) is a unit of measurement related to ionization in air and is used for measuring radiation exposure rather than the specific biological effects on tissue.

Therefore, the use of millisieverts is critical for assessing risk and establishing safety guidelines in radiation management, making it the appropriate choice for expressing equivalent dose.