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 cpm = 16.667 mrem
1 mrem = 0.06 cpm
例子:
将15 每分钟计数转换为搅拌：
15 cpm = 250 mrem
| 每分钟计数 | 搅拌 |
|---|---|
| 0.01 cpm | 0.167 mrem |
| 0.1 cpm | 1.667 mrem |
| 1 cpm | 16.667 mrem |
| 2 cpm | 33.333 mrem |
| 3 cpm | 50 mrem |
| 5 cpm | 83.333 mrem |
| 10 cpm | 166.667 mrem |
| 20 cpm | 333.333 mrem |
| 30 cpm | 500 mrem |
| 40 cpm | 666.667 mrem |
| 50 cpm | 833.333 mrem |
| 60 cpm | 1,000 mrem |
| 70 cpm | 1,166.667 mrem |
| 80 cpm | 1,333.333 mrem |
| 90 cpm | 1,500 mrem |
| 100 cpm | 1,666.667 mrem |
| 250 cpm | 4,166.667 mrem |
| 500 cpm | 8,333.333 mrem |
| 750 cpm | 12,500 mrem |
| 1000 cpm | 16,666.667 mrem |
| 10000 cpm | 166,666.667 mrem |
| 100000 cpm | 1,666,666.667 mrem |
规则