reply to my classmate post and add few more information A personnel dosimeter is a monitoring device that takes the equivalent dose of any person exposed on a regular basis. The highest occupational radiation exposure for diagnostic imaging is fluoroscopy. The purpose of the personnel dosimeter is to provide an indication of radiation exposure working habits and working conditions of diagnostic imaging personnel. The total amount of radiation dose is usually expressed in millisieverts (mSv) of rems. Some dosimeters can even differentiate between types of radiation whether alpha, beta, gamma, and x-ray. When dosimeters may have alarms or alerts to notify the wearer if the radiation dose exceeds the preset threshold