Abstract
To overcome the deficiencies of positron emission tomography and single photon emission computed tomography due to photon scatter and absorption artifacts, we identified a better approach of employing single isotopes which are positron emitters as well as gamma emitters. Tomography with a single isotope affords 3-D vertex reconstruction of each event and thus provides vastly improved images. We evaluated 116 positron and gamma emitting nuclear isotopes for their half-lifes, photon energies and intensities, ease and economy of production and biological compatibilities. 73Se, 99Rh, 123Xe, 174Ta and 184Ir are identified as most promising candidate isotopes.
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