RECONSTRUCTION APPARATUS FOR RECONSTRUCTING A PET IMAGE

摘要

The invention relates to a reconstruction apparatus (9) for reconstructing a PET image. A first detector (3) generates first detection events and detection times assigned to the first detection events and a second detector (6) generates second detection events and detection times assigned to the second detection events. A timing window determination unit (11) provides a first-second timing window by providing a first-second upper threshold based on the position of the second detector relative to the first detector and a detection event pairs generation unit (12) generates first-second detection event pairs based on the provided first-second timing window, wherein the first-second detection event pairs are used for reconstructing the PET image. The provision of the first-second timing window depending on the position of the second detector can lead to an improved generation of first-second detection event pairs, which in turn can lead to an improved PET image.