Method for the compensation of image disturbances in the course of radiation image recordings and radiation image recording apparatus

An apparatus for radiation image recording, comprising:

• a beam source including a focus;
• a digital radiation image receiver with radiation-sensitive pixels arranged in matrix form with an assigned device for the pixelwise amplification of the pixel signals;
• and
• an antiscatter grid, arranged between the beam source and the digital radiation image receiver, the antiscatter grid being focused with respect to a specific distance from the focus of the beam source, wherein the assigned device is designed for compensation of image disturbances caused by a defocusing of the antiscatter grid, the image disturbances being caused by a defocusing-dictated attenuation of the primary radiation incident on the digital radiation image receiver, for pixelwise amplification of at least some of the signals supplied by the digital radiation image receiver in a manner dependent on the actual distance of the antiscatter grid from the focus.

An apparatus for radiation image recording, comprising:

• means for generating a beam including a focus;
• means for detecting the beam, including radiation-sensitive pixels arranged in matrix form, and including means for the pixelwise amplification of the pixel signals;
• and
• an antiscatter grid, arranged between the means for generating a beam and the means for detecting, the antiscatter grid being focused with respect to a specific distance from the focus of the means for generating the beam, wherein the means for the pixelwise amplification is designed for compensation of image disturbances caused by a defocusing of the antiscatter grid, the image disturbances being caused by a defocusing-dictated attenuation of primary radiation incident on the means for detecting, for pixelwise amplification of at least some of the signals supplied by the means for detecting in a manner dependent on the actual distance of the antiscatter grid from the focus.