Table 1.
CT* | Effective dose (mSv) |
---|---|
Head CT | 1–2 |
Chest CT | 5–7 |
Abdomen CT | 5–7 |
Abdomen and pelvis CT | 8–14 |
Coronary CT angiography | 5–15 |
Coronary calcium CT | 1–3 |
Radiographic/fluoroscopic* | |
Hand radiograph | <0.1 |
Dental bitewing | <0.1 |
Chest radiograph | 0.1–0.2 |
Mammogram | 0.3–0.6 |
Lumbar spine radiograph | 0.5–1.5 |
Barium enema exam | 3–6 |
Coronary angiogram (diagnostic) | 5–10 |
Nuclear medicine* | |
Lung scan | 2–3 |
Bone scan | 3–5 |
Heart scan – sestamibi | 13–16 |
Heart scan – thallium | 35–40 |
Ubiquitous background (per individual in US population)‡ | 3.11 |