The object of the present invention is to provide a cheap radiation tomography device with a detector ring the design of which can be easier changed so that the development cost thereof can be reduced. The radiation tomography device of the present invention has plural modules for receiving detected data from different radiation detectors. Hence, based on the fact that each module send and receives the detected data, the detected data can be shared and simultaneous event can be counted. That is, a simultaneous count mean can be accomplished only by wiring each of modules when producing the radiation tomography device. By this way, the present invention can provide the cheap radiation tomography device having the development cost down since the radiation tomography device can be produced without developing a new substrate for simultaneous counting.本發明之目的在於提供一種藉由作成易於變更檢測器環的設計,而抑制開發費用之便宜的放射線斷層攝影裝置。若依據本發明的放射線斷層攝影裝置,其具有從相異之放射線檢測器接收檢測資料的複數個模組。而且,藉由各個模組互相收發檢測資料,共用檢測資料並計數同時事件。即,在製造放射線斷層攝影裝置時,僅以將各模組配線而可實現同時計數手段。若依此方式構成,因為不必新開發進行同時計數的基板就可製造放射線斷層攝影裝置,所以可提供抑制開發費用之便宜的放射線斷層攝影裝置。9‧‧‧放射線斷層攝影裝置10‧‧‧頂板11‧‧‧高架12‧‧‧檢測器環13a、13b‧‧‧吸收體15‧‧‧頂板移動機構16‧‧‧頂板移動主控制部19‧‧‧計時器20‧‧‧放射線脈波運算部21‧‧‧同時計數部22‧‧‧同時計數資料保持部23‧‧‧控制資訊設定部25‧‧‧影像產生部35‧‧‧操作桌36‧‧‧顯示部41‧‧‧主控制部M‧‧‧被檢體D‧‧‧斷層影像