PROBLEM TO BE SOLVED: To solve problems that both of arm rotary motion and rectilinear motion are taken place during X-ray irradiation, the rotary angle of the arm does not become a swing angle of a tomographic face and it is difficult to acquire a thin section-thickness tomographic image compared with the original tomographic image and a TDI (Tissue Doppler Imaging) method is adopted, charges are transferred in the arm advancing direction and image signals are averaged to cause the lowering of the S/N ratio.SOLUTION: This X-ray tomographic equipment is provided with an arm rotation section for rotating the arm by a prescribed angle using an irradiation object as a rotation center while irradiating X rays from an X-ray irradiation section, while the arm is rotated by the arm rotation part, charges are accumulated in respective pixels of an X-ray sensor according to the intensity of the X ray received by passing through the irradiation object, and after finishing the rotation, the accumulated charges are sequentially outputted as electric signals.COPYRIGHT: (C)2008,JPO&INPIT【課題】X線照射中にアームの回転運動と直線運動の両方が入るため、アームの回転角がそのまま断層面の振角とはならず、本来の断層画像に比べて薄い断層厚の断層画像が得にくいこと、TDI法を取っているためアーム進行方向の電荷足しこみがあるため画像信号が平均化されS/Nが落ちること、などの課題があった。【解決手段】照射対象を回転中心にしてX線照射部からX線を照射させながらアームを所定角度回転させるアーム回転部を備え、アーム回転部によって前記アームを回転させる間、照射対象を通過して受けるX線の強度に応じてX線センサの各画素に電荷を蓄積し、回転終了後蓄積した電荷を電気信号にして順次出力させる。【選択図】図1
