Patent ID: 9063237
Filing Date: 2015-06-23
Classification: G01T

Abstract:
1. An imaging system, comprising: a closed annular ring with an aperture defining an examination region; a set of detector modules affixed to the closed annular ring, wherein the set of detector modules detect gamma rays, which have energy in a range of 40 to 140 keV and 511 keV, emitted by a radioisotope in an examination region, wherein 511 keV gamma rays are detected in singles mode in which individual 511 keV gamma rays, and not coincidence pairs of 511 keV gamma rays, are detected; an energy discriminator that bins detected gamma rays into a first energy bin corresponding to 511 keV energy gamma rays and a second energy bin corresponding to 40 to 140 keV energy gamma rays; and a reconstructor that reconstructs the 511 keV energy gamma rays in the first energy bin thereby generating a first image of a distribution of a first radionuclide and that reconstructs the 40 to 140 keV energy gamma rays in the second energy bin thereby generating a second image of a distribution of a second radionuclide.