Radiation CT radiographing device, radiation CT radiographing system, and radiation CT radiographing method using the same

A radiation CT radiographing device comprising:

• rotating means for rotating an object to be irradiated with a radiation;
• rotational angle detecting means for detecting a rotational angle of said rotating means and generating a rotational angle signal;
• a radiation image sensor panel fixed relatively to an axis of the rotation while forming projection image data of the object based on said rotation;
• and
• controlling means for controlling a storage period of said radiation image sensor panel based on said rotational angle signal, wherein,
• when a change in a time period for a rotational angle of said rotating means occurs during one projection of the radiation, said controlling means changes the storage period for the one projection of said radiation image sensor panel to adapt the storage period to the change in the time period for the rotational angle of said rotating means during one projection of the radiation.

A radiation CT radiographing system comprising:

• a radiation source for irradiating an object with a radiation;
• radiation source control means for controlling the radiation source;
• rotating means for rotating the object to be irradiated with a radiation;
• rotational angle detecting means for detecting a rotational angle of said rotating means and generating a rotational angle signal;
• a radiation image sensor panel comprising a plurality of pixels and forming projection image data of the object based on the rotation;
• and
• controlling means for controlling a storage period of the pixels based on the rotational angle signal, wherein,
• when a change in a time period for a rotational angle of said rotating means occurs during one projection of the radiation, said controlling means changes the storage period for the one projection of the pixels to adapt the storage period to the change in the time period for the rotational angle of said rotating means during one projection of the radiation.