Radiographic apparatus and method for switching a grid

A radiographic method comprising:

• a mode selection step for selecting either a first mode for imaging related to a still image or a second mode for imaging related to a moving image;
• an irradiation step of irradiating an object with radiation;
• a removing step of removing scattered radiation from radiation which has passed through the object;
• a grid selection step for selecting one of a plurality of grids in accordance with the selected mode;
• a two-dimensional converting step for converting the radiation from which the scattered radiation has been removed by the selected grid into electrical signals;
• a setting step for setting a read condition on a basis of the selected mode selected in said mode selection step, which includes read pixel pitch and an amplification degree;
• an acquisition step of acquiring an image of the object from the electrical signals on a basis of the read condition set in the setting step for setting a read condition;
• a setting step of setting imaging conditions;
• and
• a grid stripe reduction step of reducing grid stripes on the image on a basis of parameters corresponding to read pixel pitch, wherein in the setting step for setting the read condition, the read pixel pitch and the amplification degree of the second mode are larger than in the first mode.

A computer-readable medium encoded with a computer program which causes a computer to execute:

• a mode selection step for selecting either a first mode for imaging related to a still image or a second mode for imaging related to a moving image;
• an irradiation step of irradiating an object with radiation;
• a removing step of removing scattered radiation from radiation which has passed through the object;
• a grid selection step for selecting one of a plurality of grids in accordance with the selected mode;
• a two-dimensional converting step for converting the radiation from which the scattered radiation has been removed by the selected grid into electrical signals;
• a setting step for setting a read condition on a basis of the selected mode selected in said mode selection step, which includes read pixel pitch and an amplification degree;
• an acquisition step of acquiring an image of the object from the electrical signals on a basis of the read condition set in the setting step for setting a read condition;
• a setting step of setting imaging conditions;
• and
• a grid stripe reduction step of reducing grid stripes on the image on a basis of parameters corresponding to read pixel pitch,
• wherein in the setting step for setting the read condition, the read pixel pitch and the amplification degree of the second mode are larger than in the first mode.