X-ray dosimetry is the measurement of the amount of radiation exposure to living organisms. There are various synonyms for this term, such as radiation dosimetry, radiation measurement, radiation monitoring, and radiation dosimeter. These terms are used to describe the same field of study, which uses instruments to measure the amount of radiation to which an organism, or material, has been exposed. X-ray dosimetry is important in medical imaging, nuclear power generation, and radiation therapy. The accurate measurement of radiation exposure is critical to ensure the safety of people working in these fields and to prevent overexposure to radiation that can lead to serious health consequences.