Production of fine aerosols labelled with various radionuclides by sublimation from a graphite boat, and their properties and tracer use

Fine aerosols labelled with 18F, 42K, 64Cu, 68Ga and 99mTc were produced by a commercial apparatus called Technegas Generator. Their properties were studied by various methods, before and after the particulates were introduced in water. The nuclides in the water were found to exist as: 18F, entirely anion, 42K, entirely cation; 68Ga, mainly cation; 64Cu, mainly in carbon particulates; and 99mTc, almost entirely in carbon particulates. Examples are shown for the utilization of these aerosols in various radiotracer studies.