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Radiation dose in adults for some radiology procedures[125]
| Procedure | Approximate effective radiation dose | Comparable to natural background radiation for |
| Chest X-ray | 0.1 mSv | 10 d |
| CT-Head | 2 mSv | 8 mo |
| CT-Thorax | 7 mSv | 2 yr |
| CT–Abdomen and Pelvis | 10 mSv | 3 yr |
| PET/CT | 25 mSv | 8 yr |
CT: Computed tomography; PET: Positron emission tomography; mSV: Millisievert.
