SMALL ANIMAL FIXING DEVICE FOR POSITRON CT DEVICE

摘要

PURPOSE:To measure many small animals under the same conditions by provid ing cages for housing one or several heads of the small animals and a supporting frame for setting plural pieces of such cages and constituting the cages and supporting frame of a low gamma-ray absorbing material. CONSTITUTION:The small animal holder 11 consists of the drawer-shaped cages 12 and the supporting frame 14 having housing holes 13 for fixing plural pieces of the cages 12. The small animals 2... which are the specimens are subjected to an anesthesia treatment and are thereafter put by each head into the cages 12 in the above-mentioned constitution. The small animals 12 are successively housed and fixed in the housing holes 13 of the supporting frame 14. The supporting frame 14 is set in a holder 3 and is fed to the prescribed position in a tunnel 10 of a gantry 1. The gamma rays radiated from the small animals 12... penetrate the cages 12... and the supporting frame 14 and are detected by scintillators 5... of radiation detectors 4.... The detected rays are amplified by photomultiplier tubes 6... and are outputted.