What does the symbol mR signify?

The symbol mR represents milliroentgen, which is a unit of measurement for exposure to ionizing radiation. Specifically, it is one-thousandth (1/1000) of a roentgen, which is the traditional unit used to quantify the amount of radiation exposure. The roentgen itself measures the amount of ionization produced in air by X-rays or gamma rays.

Understanding this unit is essential in the context of radiation safety, as it helps professionals quantify levels of radiation in various settings and determine safe exposure limits for individuals. Knowing how to interpret these measurements aids in maintaining proper safety protocols and ensures compliance with regulatory standards regarding radiation exposure.

Milliroentgen is commonly used in various fields, including medical imaging and radiation protection, allowing for more precise communication about exposure levels, especially when dealing with low doses of radiation. This precision is crucial for monitoring safety and implementing protective measures effectively.