PROBLEM TO BE SOLVED: To improve performance of comparative image reading by appropriately performing comparative image reading when a radiographic image being an object of the comparative image reading includes non-recurrent unevenness in the density.SOLUTION: A radiographic image corrector includes: a data acquisition means for acquiring data which are similar in the unevenness in the density by using a pixel value in a prescribed region of the radiographic image with respect to each of two radiographic images obtained about an identical subject being the object of the comparative image reading and a correction means for correcting the pixel value of either of two radiographic images so that the data which are similar in the unevenness in the density and are acquired from the corrected respective radiographic images by the data acquisition means coincide with one another on the basis of the data which are similar in the unevenness in the density and are acquired from the respective radiographic images by the data acquisition means.COPYRIGHT: (C)2013,JPO&INPIT【課題】比較読影の性能を向上させる【解決手段】比較読影の対象となる、同一被写体について取得された2つの放射線画像の各々について、その放射線画像の所定の領域の画素値を用いて濃度ムラを近似したデータを取得するデータ取得手段と、データ取得手段により各放射線画像から取得された濃度ムラを近似したデータに基づいて、補正後の各放射線画像からデータ取得手段により取得された濃度ムラを近似したデータが互いに一致するように、2つの放射線画像のうちいずれか一方の放射線画像の画素値を補正する補正手段とを備えた放射線画像補正装置を提供する。【選択図】図2
