Patent ID: 9024262
Filing Date: 2015-05-05
Classification: A61B,G01T

Abstract:
1. A positron emission tomography (PET) device for imaging a plurality of probes comprising: a group of PET gamma ray detectors adapted to receive a pair of pair-annihilation gamma rays from a subject to be imaged, wherein the pair of pair-annihilation gamma rays are generated by a positron-electron pair annihilation, and wherein to the subject to be imaged both of a first probe and a second probe are administered, the first probe having a positron emitting nuclide that becomes an excited state of a daughter nuclide through beta decay and, following a positron emission by the beta decay emits a unique gamma ray of a first energy during transition into a ground state of the daughter nuclide, and the second probe having a nuclide that becomes an excited state of a daughter nuclide through beta decay and, following a positron emission by the beta decay, emits a unique gamma ray of a second energy during transition into a ground state of the daughter nuclide, an energy-resolving gamma ray detector adapted to detect one of the unique gamma rays for resolving the first energy and the second energy; and an imaging processor that receives both of a pair-annihilation detection signal supplied according to coincidence measurement with a pair of PET gamma ray detectors in the group of PET gamma ray detectors and a signal supplied by the energy-resolving gamma ray detector, wherein the imaging processor executes reconstruction of images for the pair-annihilation detection signal differently according to whether an energy value of a unique gamma ray detected within a predetermined time of the detection of the pair-annihilation gamma rays corresponds to the first energy or the second energy.