PROBLEM TO BE SOLVED: To improve a spatial resolution in a view direction in a reconstructed image while suppressing an increase in a cost, in imaging by a radiation tomography system.SOLUTION: Provided is a radiation tomography system in which, when projection data items of each of plural views are collected, imaging means controls a radiation source so that the radiation source can radiate a radiation over a second time Δt2 shorter than a first time Δt1 obtained by dividing a time per one turn of the radiation source by the number of views per one turn. Irradiation of a radiation is enabled or disabled by enabling or disabling feed of a supply voltage KV to the radiation source, a response speed of which is high, so as to enable or disable feed of a supply current mA to the radiation source.COPYRIGHT: (C)2015,JPO&INPIT【課題】放射線断層撮影装置による撮影において、コストアップを抑えつつ、再構成画像におけるビュー方向の空間分解能を向上させる。【解決手段】撮像手段が、複数ビューの各々の投影データ収集において、放射線源の1回転当たりの時間を1回転当たりのビュー数で割って成る第1の時間Δt1よりも短い第2の時間Δt2だけ放射線を照射するよう放射線源を制御する、放射線断層撮影装置を提供する。放射線照射のオンオフは、例えば、応答速度が速い放射線源への供給電圧KVのオンオフにより放射線源への供給電流mAをオンオフして行う。【選択図】図3
