Sievert
The Sievert, abbreviated Sv is the SI unit to measure the equivalent dose and committed dose of an ionizing radiation, which represent the risk of bodily radiation dosage and harm as a result of it. It looks at how an organism reacts to a given dose. This is different from measuring the total absorbed dose, which is measured in grays. This unit is important in radiation protection and medical treatments such as radiotherapy. It is named after Rolf Sievert, a Swedish physicist and doctor, who did research on how radiation affects organisms.
Sievert Media
External radiation dose quantities used in radiological protection
Graphic showing relationship of "protection dose" quantities in SI units
The radiation weighting factor for neutrons has been revised over time and remains controversial.
This is a graph depicting the effect of dose fractionation on the ability of gamma rays to cause cell death. The blue line is for cells which were not given a chance to recover; the radiation was delivered in one session. The red line is for cells which were allowed to stand for a time and recover with the pause in delivery conferring radioresistance.
US Department of Energy 2010 dose chart in sieverts for a variety of situations and applications
Various doses of radiation in sieverts, ranging from trivial to lethal, expressed as comparative areas
Graphic showing relationships between radioactivity and detected ionizing radiation
