| 摘要 |
PURPOSE:To improve the reproducibility with reconstruction thrugh a invariable correction by simultaneously collecting data for reconstruction tomographic images and data for correction with a spot beam source for correction arranged at a proper position. CONSTITUTION:A tomographic apparatus has a detector 1 for detecting gamma rays from a radioactive isotope dosed into a test object 2, a scanning mechanism 4 of scanning rotating the detector 1 around the object 2 and a data processor 5 which collects data from the detector 1 to reconstruct a tomographic image and indicates it on a display 6. A spot beam source 3 is so arranged at a position corresponding to the effective view range of the detector 1 except for near the center thereof to collect data for reconstructing tomographic images and data for correction simultanouely. |
