Image acquisition system and image acquisition method

An image acquisition method comprising:

• a rotation step of rotating an object around a rotation axis at a predetermined speed by using a rotating stage;
• a radiation output step of outputting radiation from a radiation source toward the rotating object;
• a radiation image capturing step of capturing an image of the input radiation and outputting image data by using a radiation camera having an input surface to which the radiation transmitted through the object is input and an image sensor capable of TDI (time delay integration) control;
• and
• an image generation step of generating a radiographic image of the object at an imaging plane based on the image data,
• wherein an angle formed between the rotation axis of the rotating stage and an axis of the radiation source is set in accordance with an FOD which is a distance between the radiation source and an imaging plane in the object, and
• in the radiation image capturing step, TDI control in the image sensor is performed in synchronization with a rotational speed of the object rotated by the rotating stage.

An image acquisition system comprising:

• a radiation source configured to output radiation toward an object;
• a rotating stage configured to rotate the object around a rotation axis;
• a radiation camera having an input surface to which the radiation transmitted through the object is input and an image sensor capable of TDI (time delay integration) control and configured to capture an image of the input radiation and output image data;
• and
• an image processor configured to generate a radiographic image of the object at an imaging plane based on the image data,
• wherein the radiation source has an axis that tilts with respect to the rotation axis,
• an angle formed between the rotation axis of the rotating stage and the axis of the radiation source is set so that an enlargement factor at an inner peripheral portion of the object is larger than an enlargement factor at an outer peripheral portion of the object.

An image acquisition method comprising:

• a rotation step of rotating an object around a rotation axis at a predetermined speed by using a rotating stage;
• a radiation output step of outputting radiation from a radiation source toward the rotating object;
• a radiation image capturing step of capturing an image of the input radiation and outputting image data by using a radiation camera having an input surface to which the radiation transmitted through the object is input and an image sensor capable of TDI (time delay integration) control;
• and
• an image generation step of generating a radiographic image of the object at an imaging plane based on the image data,
• wherein an angle formed between the rotation axis of the rotating stage and the axis of the radiation source is set so that an enlargement factor at an inner peripheral portion of the object is larger than an enlargement factor at an outer peripheral portion of the object, and
• in the radiation image capturing step, TDI control in the image sensor is performed in synchronization with a rotational speed of the object rotated by the rotating stage.