Emami data suggest that kidney tolerances in adults, based on 2 Gy/fraction, 5 fractions per weak are below the threshold to cause clinical nephritis. Emami lists the following dose tolerance for the kidney:
| TD 5/5 | 1/3 | 2/3 | 3/3 |
| 50 Gy | 30 Gy | 23 Gy | TD 5/50 |