Definition: Gadolinium. An element of the rare earth family of metals. It has the atomic symbol Gd, atomic number 64, and atomic weight 157.25. Its oxide is used in the control rods of some nuclear reactors.
gadofosveset trisodium [ MS 325,MS-325,Vasovist ] a low molecular weight molecule chelated to Gadolinium, that strongly binds to plasma proteins; Vasovist is an injectable for imaging the vascular system by magnetic resonance angiography