X-rays are monitored and regulated to provide the minimum amount of radiation exposure needed to produce the image. Most experts feel that the risk is low compared with the benefits. Pregnant women and children are more sensitive to the risks of ionizing radiation. A more serious risk is a bowel perforation.
Lower gastrointestinal series
Upper gastrointestinal series
GI cocktail
Defecography
Computed tomography enterography
Capsule endoscopy
Enteroscopy
EGS 