Patent ID: 8908825
Filing Date: 2014-12-09
Classification: A61B,G01N,G21K

Abstract:
1. A radiological image capturing system, comprising: a radiological image capturing apparatus that includes an X ray tube to emit X rays, a subject placing plate to place a subject thereon, a plurality of gratings, and an X-ray detector to detect the X rays passed through the plurality of gratings, so as to capture an X-ray image of a subject to output X-ray image data representing the X-ray image of the subject; a controlling apparatus that is structured to determine whether or not a distortion is generated on any one of the gratings based on at least one of Moiré stripe images captured by detecting the X rays passed through the plurality of gratings by employing the X-ray detector in such a state that no subject is placed on the subject placing plate; an image processing apparatus that is structured to apply an image processing to the X-ray image data, outputted by the radiological image capturing apparatus, so as to create and output processed X-ray image data; and an image outputting apparatus structured to output a processed X-ray image based on the processed X-ray image data outputted by the image processing apparatus; wherein the Moiré stripe images includes a first Moiré stripe image and a second Moiré stripe image that is captured after the first Moiré stripe image is captured; and wherein the controlling apparatus is structured to determine whether or not the distortion is generated on any one of the gratings based on both the first Moiré stripe image and the second Moiré stripe image, while, the image processing apparatus is structured to conduct an operation for correcting the X-ray image data representing the X-ray image that is captured in a state that the subject is actually placed on the subject placing plate, based on the second Moiré X-ray image data.