A<unk>  is a medical procedure used to examine and diagnose problems with the human colon of the large intestine. Radiographs (X-ray pictures) are taken while barium sulfate, a radiocontrast agent, fills the colon via an enema through the rectum. The term barium enema usually refers to a<unk> , although enteroclysis (an upper<unk><unk>  is often called a small bowel barium enema.
Lower gastrointestinal series
Upper gastrointestinal series
GI cocktail
Defecography
Computed tomography enterography
Capsule endoscopy
Enteroscopy
EGS 