Which radiographic study images the kidneys, ureters, and bladder without using contrast?

• A. Kidney, Ureter, Bladder (KUB)
• B. Hysteroscopy
• C. Glucose tolerance test
• D. Hematocrit (Hct)

Answer: (A)

The study being described is a plain abdominal radiograph that surveys the urinary tract without contrast. This imaging, known as a KUB, captures the kidneys, ureters, and bladder in one view and is used to detect things like stones, calcifications, and abnormal positions or sizes of these structures without using any contrast material.

Hysteroscopy is a procedure to visualize the uterine cavity with a scope, not an imaging study of the kidneys. A glucose tolerance test assesses how the body handles glucose and requires blood samples after a glucose load, with no imaging involved. Hematocrit is a blood test measuring the proportion of red blood cells, again not an imaging study.