PROBLEM TO BE SOLVED: To make it possible that even when an excessive signal which exceeds a dynamic range of a detector is input, the input signal can appropriately be estimated.SOLUTION: A radiographic apparatus according to the present invention comprises: detecting means including a first pixel which detects radiation and reads a radiation signal at a predetermined frame rate and a second pixel which detects the radiation and reads a radiation signal at a frame rate higher than that for the first pixel and estimating means which uses the radiation signal read by the second pixel to estimate the radiation signal in excess of the amount of saturating signal of the first pixel.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】 検出装置のダイナミックレンジを超えるような過大な信号が入力された場合においても、入力された信号を適切に推定することができる。【解決手段】 本発明の放射線画像撮影装置は、放射線を検出し、所定のフレームレートで放射線信号を読み出す第1の画素と、前記放射線を検出し、前記第1の画素より高いフレームレートで放射線信号を読み出す第2の画素とを含む検出手段と、前記第2の画素が読み出した前記放射線信号を用いて、前記第1の画素の飽和信号量を超える量の前記放射線信号を推定する推定手段と、を備える。【選択図】 図1
