Type of examination | Fetal dose* (mGy) |
Very low-dose examinations (<0.1 mGy) | |
Cervical spine radiography (anteroposterior and lateral views) | <0.001 |
Radiography of any extremity | <0.001 |
Mammography (two views) | 0.001 to 0.01 |
Chest radiography (two views) | 0.0005 to 0.01 |
Low- to moderate-dose examinations (0.1 to 10 mGy) | |
Radiography | |
Abdominal radiography | 0.1 to 3.0 |
Lumbar spine radiography | 1.0 to 10 |
Intravenous pyelography | 5 to 10 |
Double-contrast barium enema | 1.0 to 20 |
CT | |
Head or neck CT | 1.0 to 10 |
Chest CT or CT pulmonary angiography | 0.01 to 0.66 |
Limited CT pelvimetry (single axial section through the femoral heads) | <1 |
Nuclear medicine | |
Low-dose perfusion scintigraphy | 0.1 to 0.5 |
Technetium-99m bone scintigraphy | 4 to 5 |
Pulmonary digital subtraction angiography | 0.5 |
Higher-dose examinations (10 to 50 mGy) | |
Abdominal CT | 1.3 to 35 |
Pelvic CT | 10 to 50 |
18F PET/CT whole-body scintigraphy | 10 to 50 |
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