| Ulcerative colitis | Non-biologicals CD | Biologicals CD | |
| Number | 41 | 42 | 23 |
| Age, years | 46 (21–82) | 43 (21–90) | 37 (20–73) |
| Female | 15 | 28 | 12 |
| Total exposure (mSv) | 4.0 (0–33.4) | 7.7 (0–101.4) | 28.5 (0–265.2) |
| % with exposure >50 mSv | 0 | 4.8 | 17.4 |
| Exposure (mSv) per year | 0.6 (0–29.1) | 0.7 (0–19.3) | 3.6 (0–19.6) |
| % of exposure due to CT | 36.8 | 63.9 | 65.4 |
| No of CT | 0 (0–4) | 0 (0–9) | 1 (0–24) |
| Total CT exposure (mSv) | 0 (0–38) | 0 (0–90) | 10 (0–238) |
| % of exposure due to bariums | 23.6 | 21.9 | 11.8 |
| No of bariums | 0 (0–2) | 1 (0–4) | 1 (0–6) |
| Total barium exposure (mSv) | 0 (0–10) | 2.6 (12.8) | 2.6 (0–20.4) |
CT, computed tomography.