Normal colon. Barium X-ray showing a healthy colon (white). Barium is radio-opaque and therefore shows up as white on an X-ray. The patient drinks a b

---

Normal colon. Barium X-ray showing a healthy colon (white). Barium is radio-opaque and therefore shows up as white on an X-ray. The patient drinks a barium-containing liquid before the X-ray.

---

Size: 3599px × 4915px
Photo credit: © GJLP/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -ray, -rays, barium, black, black--white, colon, colonic, diagnostic, digestive, gastrointestinal, healthy, imaging, intestine, intestines, large, monochrome, normal, opaque, radio, radio-opaque, radiography, radiological, radiology, system, tract, white, xray, xrays