Radiation Absorbed Dose from 131I (NaI)
| Organ | mGy/MBq | rad/mCi |
| Assuming no thyroid uptake (athyrotic) | ||
| Bladder wall | 0.610 | 2.3 |
| Lower colon wall | 0.043 | 0.16 |
| Kidneys | 0.065 | 0.24 |
| Ovaries | 0.042 | 0.16 |
| Testes | 0.037 | 0.14 |
| Stomach | 0.034 | 0.13 |
| Assuming 55% thyroid uptake and 20-g gland (hyperthyroid) | ||
| Thyroid | 790 | 2.920 |
| Bladder wall | 0.290 | 1.1 |
| Breast | 0.091 | 0.34 |
| Upper colon wall | 0.058 | 0.21 |
| Ovaries | 0.041 | 0.15 |
| Testes | 0.026 | 0.10 |
Dose may vary depending on whole-body effective half-life of 131I. Data are from ICRP 53 (119).