PROBLEM TO BE SOLVED: To provide an X-ray diagnostic device which grasp the lifetime of a detector more accurately.SOLUTION: The X-ray diagnostic device includes: an X-ray detection part which includes an X-ray generation part for emitting X rays to irradiate an analyte and a detector for detecting X rays transmitted through the analyte an X-ray detection part for generating X-ray transmission information an image generation part which generates an X-ray image based upon the X-ray transmission information and a lifetime detection part 11 which detects the lifetime of the detector based upon an output value of the X-ray image. The lifetime detection part includes: a luminance level value operation part 11b which calculates a dosage of the X rays irradiating the detector based upon an output value of the X-ray image or an area of interest set to the detector a dosage integration part 11c which adds the dosage of X rays calculated by the luminance level value operation part 11b to past dosages of X rays by areas of interest, and calculates integrated dosages of the areas of interest, and a lifetime determination part 11d which determines the lifetime associated with the detector based upon the integrated dosage.COPYRIGHT: (C)2012,JPO&INPIT【課題】検出器の寿命をより正確に把握し報知可能なX線診断装置を提供する。【解決手段】被検体に対して照射するX線を発生するX線発生部と、被検体を透過したX線を検出する検出器を含み、X線透過情報を生成するX線検出部と、X線透過情報に基づいてX線画像を生成する画像生成部と、X線画像における出力値に基づいて検出器の寿命を検知する寿命検知部11と、を備え、寿命検知部は、X線画像または検出器に設定される関心領域における出力値に基づいて、検出器に対して照射されるX線量を算出する輝度レベル値演算部11bと、輝度レベル値演算部11bにより算出されたX線量を関心領域ごとの過去のX線量に加え、関心領域における積算線量を算出する線量積算部11cと、積算線量に基づいて、検出器に関する寿命の判定を行う寿命判定部11dとを備える。【選択図】図2
