| 摘要 |
PURPOSE:To make simultaneous measurement of plural objects to be detected by forming plural detector rings into multistage constitution by which many slice images are obtd. simultaneously form the same object to be detected and the plural detector rings are divided and made independent. CONSTITUTION:Detector rings 11 to 14 are so fixed as to crimp the rings with the two sides of the U shapes of supporting levers 21 to 24 and the levers 21 to 24 are supported freely turnably around a shaft 26. Further, respective both sides of the levers 21 to 24 are so formed that shielding collimators 28 can be attached and detached to and therefrom and that slicing collimators 38 can be mounted to the inner boundary positions of the rings 11 to 14 when the rings 11 to 14 are superposed. Then, the multislice measurement is carried out by superposing the levers 21 to 24, superposing the rings 11 to 14, mounting the shielding collimators 28 to both ends thereof and mounting the slicing collimators 38. The single slide measurement of the 4 specimens to be detected is possible by turning the levers 21 to 24 and mounting the shield collimators 28 to both sides of the respective rings.
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