Version October 2024
| Metric | Preferred (SI) unit | Measure | Other terms |
| Activity | Becquerel (Bq) | 1 disintegration per second (3.7 x 1010 Bq = 1 Ci) | Curie (Ci) |
| Dose | Gray (Gy) | 1 joule per kg (1 Gy = 100 rad) | Rad |
| Dose equivalent | Sievert (Sv) | Depends on the relative biologic effectiveness (rbe) of the source of the radiation (Sv = Gy x rbe; 1 Sv = 100 rem) | Rem |
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