Visipaque is an iso-osmolar contrast agent. The osmolality equal to that of blood and the sodium and calcium concentration in a ratio equivalent to blood provides high patient safety and comfort.

VoLumen® is a low density barium sulfate contrast agent especially designed for MDCT (multi-detector row CT) and PET/CT exams to mark the bowel. Volumen is useful for CT studies of the small bowel and mesenteric vessels.
Positive oral contrast media may limit the delineation between soft bowel tissues and the lumen and may cause artifacts. Water or methyl-cellulose transits very rapidly and may limit bowel distention and soft tissue differentiation. Volumen, similar to water appears hypodense (low Hounsfield values) on CT scan and can be used in conjunction with IV contrast. VoLumen's low density formulation is well-suited for computed tomography enterography.

Zonography is a variation of linear tomography, where a limited arc of movement is used. It is still used in some centers for visualizing the kidney during intravenous urography (IVU).