Abstract: The invention relates to a detection arrangement, a detection system comprising said arrangement, and a method of processing data from said arrangement. The detector arrangement disclosed comprises at least one array of detectors, wherein the detectors are configured to detect photons emitted from an object as a result of positron annihilation due to irradiation of the object with photons of a predetermined energy. Each detector in the array is linked to or associated with one or more other detector in the array to define a region of interest (RoI). The detector arrangement comprises or is communicatively coupled to a coincidence trigger unit which is configured to register or determine a coincidence in response to receiving detection signals from two different detectors forming part of the same RoI and indicating detection of substantially back-to-back co-linear and co-incident photons in the RoI.

Abstract: The invention relates to methods and systems for reducing artefacts in image reconstruction employed in tomographic imaging including Positron Emission Tomography (PET) and Computer Assisted Tomography (CAT) or (CT). The method is carried out entirely or in part by a computer or computerised system communicatively coupled to a detector arrangement which comprises a plurality of detector elements, wherein the detector elements are configured to detect photons associated with an object during PET and CAT screening processes in at least medical and mining applications.

Abstract: A method of creating a representation of the internal structure of a target object is provided. There is provided a method of creating a representation of the internal structure of a target object having the steps of accelerating a number of charged subatomic particles, guiding the particles to a plurality of emission sources on one side of a target object, emitting electromagnetic radiation from each specific emission source for a discrete period such that, during the discrete period, the specific emission source is associated with the discrete period, the electromagnetic radiation being generated by the conversion of the particles to electromagnetic radiation, detecting, on a side opposing the emission sources, a projection of penetration of the electromagnetic radiation from each emission source, and combining the projections from each source to create a representation of the internal structure of the target object.

Abstract: The invention relates to a detection arrangement, a detection system comprising said arrangement, and a method of processing data from said arrangement. The detector arrangement disclosed comprises at least one array of detectors, wherein the detectors are configured to detect photons emitted from an object as a result of positron annihilation due to irradiation of the object with photons of a predetermined energy. Each detector in the array is linked to or associated with one or more other detector in the array to define a region of interest (RoI). The detector arrangement comprises or is communicatively coupled to a coincidence trigger unit which is configured to register or determine a coincidence in response to receiving detection signals from two different detectors forming part of the same RoI and indicating detection of substantially back-to-back co-linear and co-incident photons in the RoI.

Abstract: A method of creating a representation of the internal structure of a target object is provided. There is provided a method of creating a representation of the internal structure of a target object having the steps of accelerating a number of charged subatomic particles, guiding the particles to a plurality of emission sources on one side of a target object, emitting electromagnetic radiation from each specific emission source for a discrete period such that, during the discrete period, the specific emission source is associated with the discrete period, the electromagnetic radiation being generated by the conversion of the particles to electromagnetic radiation, detecting, on a side opposing the emission sources, a projection of penetration of the electromagnetic radiation from each emission source, and combining the projections from each source to create a representation of the internal structure of the target object.