NCIt definition : The citrate salt of the radioisotope gallium Ga 67. Although the mechanism is unknown,
gallium Ga 67 concentrates in lysosomes and is bound to a soluble intracellular protein
in certain viable primary and metastatic tumors and focal sites of inflammation, allowing
scintigraphic localization. Ga-67 scintigraphy (GS) cannot differentiate between tumor
and acute inflammation.;