Fig 4.

Utility of radiographic studies in diagnosis of acute abdominal pain. *When used in addition to physical examination and laboratory tests; if used in addition to computed tomography, improves specificity (87% v 41%) but not sensitivity (88% in both groups).⁴ †Organ dose ranges from 0.01 mSv to lung in anterior-posterior chest film to 0.25 mSv to stomach in anterior-posterior film of abdomen.¹⁰⁶ ‡When used in addition to physical examination and laboratory tests. §Assuming induction of cancer is proportional to radiation dose even for very small doses of radiation, so-called linear non-threshold model, risk of death from cancer attributable to single computed tomography scan is approximately 0.02% in 50 year old patient and 0.06% in 25 year old patient¹⁰⁶