| 摘要 |
PROBLEM TO BE SOLVED: To reconfigure images using a detection time difference of gamma ray with high accuracy.SOLUTION: A PET device according to an embodiment has a detector with a plurality of detector modules 14, a calibration part 24 and an image reconfiguration part 25. The calibration part 24 calibrates time information for determining the respective detection times for two detection modules 14 at a plurality of different positions adjacent to the predetermined plurality of detector modules 14 based on the respective detection times of the two detector modules 14 for which in a state in which a point linear source is set the pair annihilation gamma rays are counted substantially at the same time and the distance between the two detector modules 14. Then, the calibration part 24 calibrates all time information for all of the plurality of detector modules 14. The image reconfiguration part 25 reconfigures the PET image of an object to be inspected using time difference of the respective detection times of the pair annihilation gamma rays calibrated based on respective time information of the plurality of detector modules 14 calibrated by the calibration part 24. |
