KUB studies image which organs?

• A. Liver, gallbladder, and pancreas.
• B. Heart, lungs, and great vessels.
• C. Kidneys, ureters, and bladder.
• D. Brain, spinal cord, and nerves.

Answer: (C)

A KUB is a plain abdominal radiograph aimed at visualizing the urinary tract from the kidneys down to the bladder. The organs primarily imaged on this film are the kidneys, ureters, and bladder. It’s routinely used to look for urinary stones, calcifications, or obstruction, and to assess overall bowel gas patterns as part of a single abdominal view. The other organs mentioned—liver, gallbladder, and pancreas—are usually evaluated with ultrasound or CT; the heart, lungs, and great vessels appear on chest imaging; and the brain and spinal structures require head imaging like CT or MRI. Knowing what KUB stands for helps you remember which structures this specific film targets.