Study View Minimum (mGy) Maximum (mGy)
Dental   0.001  
Cerebral angiography     <0.1
Chest AP <0.01 <0.01
Chest PA <0.01 <0.01
Upper or lower extremity   0.01  
Thoracic Spine PA <0.01 0.01
Thoracic Spine AP <0.01 0.03
Skull   0.04  
Chest Helical       0.13
Pulmonary perfusion 3mCi (99mTc) MAA   0.18  
Mammogram Cc and Lat. (4films)   0.20
Intravenous Pyelogram (IVP) Lat.   0.37
Pulmonary Ventilation (Xenon) 10mCi (133Xe)6   0.40  
CT Head (10slices with slices thickness=10mm)     <0.50
Pulmonary angiography Brachial route     <0.50
Hip Lat.   0.51
Hepatobiliary 5mCi 99mTc Sulfur Colloid     0.55
Upper GI Series     0.56
CT Chest (10slices with slices thickness=10mm)     <1.00
Intravenous Pyelogram (IVP) PA   1.04
Hip AP   1.40
Hepatobiliary 5mCi 99mTc HIDA     1.50
Pulmonary perfusion (Technetium) 5mCi (99mTc) MAA   1.75  
Intravenous Pyelogram (IVP) AP   2.64
Abdomen PA 1.30 3.00
Lumber Spine Lat. 0.91 3.50
Pulmonary angiography femoral route     3.74
Abdomen AP 2.90 15.00
Small bowel series with upper GI     21.30
Pelvis AP 3.40 22.00
CT Abdomen(10slices with slices thickness=10mm)     26.00
Lumber Spine AP 7.50 40.00
Barium enema 10.00 130.00
Iodine (131I), at fetal thyroid tissue at 20weeks gestation (By the use of radioactive isotopes of Iodine is contraindicated in pregnancy)   5900.00
Table 1: Maximum estimated fetal dose during some common diagnostic imaging studies.