放射性是不稳定原子核因辐射失去能量的过程。它以Becquerels（BQ）进行测量。
1 Bq = 1,000 mrem
1 mrem = 0.001 Bq
例子:
将15 贝克雷尔转换为搅拌：
15 Bq = 15,000 mrem
| 贝克雷尔 | 搅拌 |
|---|---|
| 0.01 Bq | 10 mrem |
| 0.1 Bq | 100 mrem |
| 1 Bq | 1,000 mrem |
| 2 Bq | 2,000 mrem |
| 3 Bq | 3,000 mrem |
| 5 Bq | 5,000 mrem |
| 10 Bq | 10,000 mrem |
| 20 Bq | 20,000 mrem |
| 30 Bq | 30,000 mrem |
| 40 Bq | 40,000 mrem |
| 50 Bq | 50,000 mrem |
| 60 Bq | 60,000 mrem |
| 70 Bq | 70,000 mrem |
| 80 Bq | 80,000 mrem |
| 90 Bq | 90,000 mrem |
| 100 Bq | 100,000 mrem |
| 250 Bq | 250,000 mrem |
| 500 Bq | 500,000 mrem |
| 750 Bq | 750,000 mrem |
| 1000 Bq | 1,000,000 mrem |
| 10000 Bq | 10,000,000 mrem |
| 100000 Bq | 100,000,000 mrem |
规则