PROBLEM TO BE SOLVED: To reset the error of sensitivity degradation correction generated from the delay of the restoration characteristics of a detector.SOLUTION: In the X-ray diagnostic apparatus for displaying the image of an object based on ghost correction for correcting the sensitivity degradation of a pixel value extracted in an X-ray detection means, when the image including the error which can be recognized as an artifact is present in the displayed image of the object, adjustment signals converted to a prescribed adjustment width on the basis of increase/decrease instruction signals inputted from an operation part are outputted, and the sensitivity degradation values of the entire pixel values calculated in the ghost correction are uniformly adjusted. The object is moved off an X-ray detector visual field, and air data are gathered, whether or not the air data are saturated is determined. The air data which are not to be saturated are obtained by lowering the tube current of an X-ray condition when they are saturated. Then, an original X-ray condition is recovered for executing photographing, and sensitivity correction is performed to the detected transmission data.COPYRIGHT: (C)2009,JPO&INPIT【課題】検出器の回復特性の遅れから生じる感度劣化補正の誤差をリセットする。【解決手段】X線検出手段で取り出した画素値の感度劣化を補正するゴースト補正に基づく被写体の画像を表示するX線診断装置において、表示された被写体の画像の中にアーチファクトと認識できる誤差を含んだ画像が存在する場合、操作部から入力される増・減指示信号に基づき、所定の調整幅に変換した調整信号を出力し、ゴースト補正で算出される全画素値の感度劣化値を一律に調整する。被写体をX線検出器視野から外し、エアーデータを収集し、エアーデータが飽和しないかを判定し、飽和しているときX線条件の管電流を下げて飽和しないエアーデータを得た後、元のX線条件に戻して撮影を実施して、検出した透過データに対し、感度補正を行う。【選択図】図1
