Lipiodol Ultra Fluid (1 of 4 packs 10ml and 4 packs each containing four 5ml ampoules), part of a set of two ampoules of Lipiodol, an iodine-containing x-ray contrast medium by Guerbet, 93609 Aulnay-sous-Bois, France, 1981.

Lipiodol is an oily liquid. It can be introduced into body cavities. It is radio-opaque because it contains iodine. This means it shows up on X-rays. Soft body tissues are normally barely visible because X-rays define denser structures such as bone.

Lipiodol was introduced in 1922. It has been widely used to demonstrate the nervous system, uterus, urinary tract and other organs on X-rays. Similar water-based preparations recently replaced Lipiodol in many types of X-ray work. This is because the images are easier to interpret. These two glass ampoules of the chemical were made by French manufacturer Guerbet.