R.J. Nickles

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Yttrium-90 is widely used to label radiopharmaceuticals with curative, or at least palliative intent. At present, both the quantitative assay, /spl plusmn/10% variation, and the in vivo imaging observe bremstrahllung from the 2.3 MeV /spl beta//sup -/. Detection of the positron, which is created in the E/sub 0/-decay of the 1.78 MeV excited state with a(More)
Isotopes in routine use for positron emission tomography (PET) produce only a single pair of 511 keV annihilation photons. "Dirty" positron emitters, e.g. /sup 124/I, that emit additional gammas are increasingly of interest. Performance of the Concorde microPET P4 small animal scanner was experimentally studied. Three phantoms were used to compare the pure(More)
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