Patent ID: 8503612

Claim:
A radiographic apparatus for obtaining a radiological image, comprising: a radiation emitting device for emitting radiation; a scattered radiation removing device for removing scattered radiation, the scattered radiation removing device having absorbing layers arranged at predetermined intervals for absorbing the scattered radiation; a radiation detecting device having a plurality of detecting elements arranged in rows and columns for detecting the radiation; and an estimation selecting device for estimating direct radiation intensity at pixels where direct radiation is attenuated by the absorbing layers, by assuming that the absorbing layers were absent; wherein the estimation selecting device is arranged, when direct radiation transmittance which is a ratio between direct radiation intensity before transmission and direct radiation intensity after transmission through the scattered radiation removing device is equal or higher than a predetermined value at each pixel concerned, to estimate direct radiation intensity for the pixel concerned using actual measurement radiation intensity at the pixel concerned obtained from actual measurement and the direct radiation transmittance, and when the direct radiation transmittance is less than the predetermined value at the pixel concerned, to estimate direct radiation intensity for the pixel concerned by interpolating calculation of direct radiation intensities at pixels surrounding the pixel concerned.