The typical radiation doses associated with some common imaging tests are shown below. Remember, the annual dose we all receive from background radiation is from 3 to 5 mSv.
| Test | Dose (mSv) | Equivalent period of background radiation | Citation |
| Chest x-ray (standard two views) | 0.06-0.1 | 8-12 days | 1, 2 |
| Mammography | 0.13-0.7 | 16-88 days | 1, 2 |
| Abdomen x-ray | 0.5-0.7 | 62-88 days | 1 |
| Lumbar spine x-rays | 1.8 | 7 months | 1 |
| Head CT scan | 2.0 | 8 months | 2 |
| Chest CT scan | 8.0 | 3 years | 2 |
| Abdomen and pelvis CT scan | 10.0 | 3 years | 2 |
| Virtual colonoscopy | 10.2 | 3 years | 3 |
| Whole body PET/low dose non-contrast CT scan | 8.5-10.3 | 3 years | 4 |
| Whole body PET/full dose contrast-enhanced CT scan | 23.7-26.4 | 8-9 years | 4 |
| Prospective ECG-gated coronary CT angiogram | 4.0 | 1 year | 6 |
| Retrospective ECG-gated coronary CT angiogram | 18.0 | 5 years | 6 |
| Tc-99m sestamibi 1 day cardiac rest-stress test | 12 | 3.5 years | 4 |
| Coronary angiography (diagnostic) | 4.6-15.8 | 2-5 years | 1 |
| Coronary angiography (with intervention) | 7.5-57.0 | 2-19 years | 1 |
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