Radiographic apparatus

A radiographic apparatus for obtaining a radiological image, comprising:

• a radiation source for emitting radiation;
• a radiation detecting device for detecting the radiation emitted;
• and
• a radiation grid disposed adjacent a detecting plane of the radiation detecting device, and
• having an arrangement of grid foil strips for absorbing scattered radiation;
• the radiographic apparatus further comprising:
• an accumulated value calculating device which, in a location where foil shadows by the grid foil strips straddle pixels, identifies the location based on a mutual geometric positional relationship of the radiation source, the radiation detecting device and the radiation grid, and calculates a straddle accumulated value of the foil shadows in the identified location;
• a radiological image collecting device for collecting an actual radiological image based on radiation detection signals detected in the presence of an inspection object;
• and
• a bending constant calculating device for calculating a bending constant which is a constant relating to bending of the grid foil strips in the location where the foil shadows by the grid foil strips straddle the pixels;
• wherein the radiological image is finally obtained by removing the foil shadows by the grid foil strips based on the accumulated value calculating device, the bending constant calculating device and the radiological image collecting device.

A radiographic apparatus for obtaining a radiological image, comprising

• a radiation source for emitting radiation
• a radiation detecting device for detecting the radiation emitted;
• an
• a radiation grid disposed adjacent a detecting plane of the radiation detecting device, and having an arrangement of grid foil strips for absorbing scattered radiation
• the radiographic apparatus further comprising
• an accumulated value calculating device which, in a location where foil shadows by the grid foil strips straddle pixels, identifies the location based on a mutual geometric positional relationship of the radiation source, the radiation detecting device and the radiation grid, and calculates a straddle accumulated value of the foil shadows in the identified location
• a radiological image collecting device for collecting an actual radiological image based on radiation detection signals detected in the presence of an inspection object;
• an
• a twisting constant calculating device for calculating a bending constant which is a constant relating to bending of the grid foil strips in the location where the foil shadows by the grid foil strips straddle the pixels
• wherein the radiological image is finally obtained by removing the foil shadows by the grid foil strips based on the accumulated value calculating device, the twisting constant calculating device and the radiological image collecting device.