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Radiation Protection Glossary

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Quality Factor
The Quality Factor is used to modify the Absorbed Dose in Gray (Gy) by multiplying to obtain a quantity called the Equivalent Dose (Sv ). It is used because some types of radiation, such as Alpha Particles , are more biologically damaging internally than other types such as the Beta Particle . The factor is determined by the US Nuclear Regulatory Commission (NRC) and is the same basic quantity as the Radiation weighting factor as defined by the ICRP .