Abdominal and Pelvic CT

An abdominal and pelvic CT assesses abdominal organs such as the liver, kidneys, spleen, pancreas, and bowel, as well as pelvic organs. It is very useful for abdominal pain, infection, and tumor evaluation.

Organs evaluated

An abdominal CT can show the liver, gallbladder, pancreas, spleen, kidneys, adrenal glands, and the digestive tract. For the pelvis, doctors can also see the bladder, uterus, ovaries, prostate, and lymph nodes.

The exam is often used to look for kidney stones, appendicitis, diverticulitis, or spread of tumors.

Intravenous and oral contrast

Intravenous contrast enhances solid organs and blood vessels. Oral contrast is sometimes given to distinguish bowel from other structures. Patients receiving contrast may be asked to fast for a few hours beforehand.

Patients with kidney disease or contrast allergy should inform their doctor early, since giving contrast requires special consideration.

Preparation and dose

Preparation depends on the facility's protocol and whether contrast is used. Drinking water as directed usually helps.

The dose from an abdominal CT is fairly high, so doctors usually order it when ultrasound or X-ray information is not sufficient to make a decision.

Key points

• Often uses intravenous contrast for clearer results.
• Patients may be asked to drink oral contrast.

Educational information, not a substitute for medical advice.