Effect of positron range on spatial resolution.

  title={Effect of positron range on spatial resolution.},
  author={Michael E. Phelps and Edward J. Hoffman and Sung-cheng Huang and Michel M. Ter-Pogossian},
  journal={Journal of nuclear medicine : official publication, Society of Nuclear Medicine},
  volume={16 7},
The effect of beta+ range on spatial resolution of imaging systems employing the detection of 511-keV annihilation radiation was determined by measuring the variation in the line-spread functions (LSFs) of positron-emitting radionuclides of 64Cu, 11C, and 15O as compared with the 514-keV gamma-ray emitter 85Sr. These radionuclides have maximum beta+ energies of 0.656, 0.960, and 1.72 MeV, respectively. The LSFs were measured in a tissue-equivalent phantom with high-resolution (approximately 2.4… CONTINUE READING

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