Table 2
Radiation dose for common imaging studies
9
Imaging study
Effective dose of radiation (mSv)
Chest
x
ray
0.02
C-spine
x
ray
0.07
Plain film abdomen
0.7
Barium follow-through
3
Barium enema
7.2
Endoscopic retrograde cholangiopancreatogram
3.9
CT, head
2
CT, abdomen
10
CT, pelvis
10