Radiation dosimetry is the measurement and calculation of the absorbed dose in matter and tissue resulting from the exposure to indirect and direct ionizing radiation. It is a scientific subspecialty in the fields of health physics and medical physics that is focused on the calculation of internal (Internal dosimetry) and external doses from ionizing radiation.

Dose is reported in gray (Gy) for matter or sieverts (Sv) for biological tissue, where 1 Gy or 1 Sv is equal to 1 joule per kilogram. Non-SI units are still prevalent as well, where dose is often reported in rads and dose equivalent in rems. By definition, 1 Gy = 100 rad and 1 Sv = 100 rem.

In the United States, radiation dosimeters measure and display dose in rems rather than sieverts. One rem = 1 centisievert = 1/100 sievert.

Read more about Dosimetry:  Radiation Effects On Living Tissue, Dose Versus Activity, Measuring Dose, Medical Dosimetry, Radiation Exposure Monitoring

Other articles related to "dosimetry":

Louis Slotin - Los Alamos - Radiation Dosage
... radiation, which could not be measured by dosimetry equipment of the day ... In the absence of personal dosimetry badges, the authors relied on measurements of sodium activation in the victim's blood and urine samples as their primary source of data ... In modern times, dosimetry is done very differently ...
Canadian National Calibration Reference Centre - Quality
... having an in-house quality assurance program, Canadian Internal Dosimetry Services are required by the nuclear regulator, the Canadian Nuclear Safety ... Dosimetry services must obtain passing results prior to receiving CNSC approval to operate as a licensed service, and at least once per year thereafter, in order to demonstrate continuing capability ...
Radiological Physics Center - Introduction
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Dosimetry - Radiation Exposure Monitoring
... Records of legal dosimetry results are usually kept for a set period of time, depending upon the legal requirements of the nation in which they are used ...