In equivocal cases, contrast enema, may be helpful by showing the caecum at an abnormal location.

The doctor then did a water-soluble contrast enema, which permitted pacification of the dilated pelvic bowel.

These tests are usually called either an "upper GI" or a barium or contrast enema or a "lower GI", depending on the organs to be studied.

Contrast enema or small bowel series or CT scan can be used to define the level of obstruction, whether the obstruction is partial or complete, and to help define the cause of the obstruction.

Strictly enteral administration (directly into the intestines) can be used for systemic administration, as well as local (sometimes termed topical), such as in a contrast enema, whereby contrast media is infused into the intestines for imaging.