PROBLEM TO BE SOLVED: To obtain an image having high resolution while reducing imaging time.SOLUTION: An X-ray diagnostic device includes an X-ray detector, a control part, and an image generation part. The X-ray detector detects an X-ray pulse irradiated from an X-ray tube and generates an electric signal. The control part causes the X-ray detector to divide and hold the electric signal generated for each unit time obtained by time-dividing an X-ray pulse irradiation period at the time of irradiation of each X-ray pulse, and causes the electric signal which is divided and held to be sequentially read out from the X-ray detector after the irradiation of each X-ray pulse is finished. The image generation part generates an X-ray image based on the electric signal sequentially read out.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2018,JPO&INPIT【課題】撮像時間を短縮しながら解像度の高い画像を得ること。【解決手段】実施形態のX線診断装置は、X線検出器と、制御部と、画像生成部とを備える。X線検出器は、X線管から照射されたX線パルスを検出して電気信号を生成する。制御部は、各X線パルスの照射時に、X線パルスの照射期間を時分割した単位時間ごとに生成された電気信号を前記X線検出器に分割して保持させ、各X線パルスの照射終了後に、分割して保持される前記電気信号を前記X線検出器から順次読み出させる。画像生成部は、順次読み出された電気信号に基づいて、X線画像を生成する。【選択図】図2