RADIATION IMAGE IMAGING APPARATUS

• Main Authors: ISHIZAKA SHUGO, EGUCHI MAO
• Format: Patent
• Language: English; Japanese
• Published: 04.10.2018
• Subjects: ACCESSORIES THEREFOR; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; CINEMATOGRAPHY; DIAGNOSIS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; ELECTROGRAPHY; HOLOGRAPHY; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEASUREMENT OF NUCLEAR OR X-RADIATION; MEASURING; MEDICAL OR VETERINARY SCIENCE; PHOTOGRAPHY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; SURGERY; TESTING

PROBLEM TO BE SOLVED: To provide a radiation image imaging apparatus capable of reducing the influence of the fluctuation of an offset component of a signal value of a noise detection circuit while reducing the influence of lateral noise on a generated radiation image when moving image imaging or the like is performed.SOLUTION: A radiation image imaging apparatus 1 includes: estimating means that estimates an offset component on the basis of data output by a noise detection unit accompanied with reading of image data of a preceding frame image; noise data calculation means that calculates noise data on the basis of data output by the noise detection unit accompanied with reading of image data of the one frame image and an offset component estimated by the estimating means on the basis of the data output by the noise detection unit accompanied with reading of the image data of the preceding frame image; and image correction means that subtracts the noise data calculated by the noise data calculation means accompanied with reading of the image data of the one frame image from the image data of the one frame image.SELECTED DRAWING: Figure 17 【課題】動画撮影等を行う際に、生成された放射線画像に対する横引きノイズの影響を低減しつつ、ノイズ検出回路の信号値のオフセット成分の変動の影響も低減することが可能な放射線画像撮影装置を提供する。【解決手段】放射線画像撮影装置１は、先行するフレーム画像の画像データの読み出しに伴いノイズ検出部が出力したデータに基づいてオフセット成分を推定する推定手段と、当該一のフレーム画像の画像データの読み出しに伴いノイズ検出部が出力したデータと、先行するフレーム画像の画像データの読み出しに伴いノイズ検出部が出力したデータに基づいて推定手段が推定したオフセット成分と、に基づいてノイズデータを算出するノイズデータ算出手段と、当該一のフレーム画像の画像データから、当該一のフレーム画像の画像データの読み出しに伴いノイズデータ算出手段が算出したノイズデータを減算する画像補正手段と、を備える。【選択図】図１７