A composition for use in radiology includes glass micro bubbles, Araldite, Jeffamine, magnesium oxide, and polyethylene. Another composition or use in radiology may include glass micro bubbles, an epoxy, acrylic, or polyurethane, and polyethylene. This composition may result in an elemental composition including carbon, oxygen, hydrogen, nitrogen, calcium, and magnesium. A composition for use in radiology may include glass micro bubbles, araldite, jeffamine, calcium carbonate, magnesium oxide, polyethylene, and a pigment and the composition includes an elemental composition including carbon, oxygen, hydrogen, nitrogen, calcium, silicon, and magnesium.
