RADIOGRAPHIC IMAGE PROCESSING APPARATUS, METHOD, AND PROGRAM

• Main Author: KAWAMURA TAKAHIRO
• Format: Patent
• Language: English; Japanese
• Published: 15.11.2018
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

PROBLEM TO BE SOLVED: To provide a radiographic image processing apparatus, method, and program which allow acquiring of a radiographic image with improved sharpness and graininess without increasing the exposure does to a subject.SOLUTION: An image acquisition unit 31 acquires first and second radiographic images G1, G2 captured by projecting radiation, which is emitted from a radiation source and transmitted through a subject, onto a first radiation detector and a second radiation detector, which second radiation detector overlaps the first radiation detector with half a pixel shifted. A corresponding positional relationship acquisition unit 32 acquires corresponding positional relationship between the positions of pixels of the first radiographic image G1 and the positions of pixels of the second radiographic image G2. A resolution enhancing unit 33 estimates pixel values corresponding to the inter-pixel positions in the first radiographic image G1 based on the corresponding positional relationship and the pixel values of the first and second radiographic images G1, G2 so as to generate a processed radiographic image Gp which has a higher resolution than the first and second radiographic images G1, G2.SELECTED DRAWING: Figure 2 【課題】放射線画像処理装置、方法およびプログラムにおいて、被写体への被曝線量を大きくすることなく、鮮鋭度および粒状性が改善された放射線画像を取得する。【解決手段】画像取得部３１が、放射線源から発せられて被写体を透過した放射線を、第１の放射線検出器および第１の放射線検出器に対して半画素ずらして重ねられた第２の放射線検出器に照射することにより取得された第１および第２の放射線画像Ｇ１，Ｇ２を取得する。対応位置関係取得部３２が、第１の放射線画像Ｇ１の画素の画素位置と第２の放射線画像Ｇ２の画素の画素位置との対応位置関係を取得する。高解像度化部３３が、対応位置関係および第１および第２の放射線画像Ｇ１，Ｇ２の画素値に基づいて、第１の放射線画像Ｇ１の画素間の位置に対応する画素値を推定して、第１および第２の放射線画像Ｇ１，Ｇ２よりも高解像度の処理済み放射線画像Ｇｐを生成する。【選択図】図２