The following table is an approximation of fetal exposure to radiation from commonly performed imaging studies. This information is adapted from Barraco, Chiu, Clancy, et al from the Eastern Association for the Surgery of Trauma and Wakeford and Little published in Int J Rad Biol 79 (5): 293-299, 2003.
CT Scans
Head CT <0.05 rads
Chest CT <0.10 rad
Abdominal CT 2.60 rads
Plain Radiographs
Chest (2 views) 0.00002 – 0.00007 rads
Abdomen 0.1
Cervical spine 0.002
Pelvis 0.040
Thoracolumbar spine 0.370
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