PROBLEM TO BE SOLVED: To form a long-sized image while suppressing a subjects exposure to radiation regarding an X-ray diagnostic apparatus and a long-sized image forming method for forming the long-sized image using a fluoroscopic image.SOLUTION: This X-ray diagnostic apparatus includes an X-ray generating part 60 irradiating the subject 100 with X-rays an X-ray detecting part 70 detecting X-ray signals based on X-rays transmitted through the subject 100 a driving part 130 moving an image system including the X-ray generating part 60 and the X-ray detecting part 70 a position sensor for detecting position information on the image system an image processing part 112 adding a plurality of fluoroscopic image frames based on the X-ray signals obtained in the X-ray detecting part 70, based on the detected position information to form a long-sized image and a display part 80 displaying the long-sized image.COPYRIGHT: (C)2011,JPO&INPIT【課題】被検体の被曝を抑えて長尺画像を作成する。【解決手段】X線を被検体100に照射するX線発生部60と、被検体100を透過したX線に基づくX線信号を検出するX線検出部70と、X線発生部60とX線検出部70とを含む映像系を移動させる駆動部130と、映像系の位置情報を検出する位置センサと、X線検出部70で得られたX線信号に基づく複数の透視画像フレームを該検出された位置情報に基づいて加算して長尺画像を作成する画像処理部112と、長尺画像を表示する表示部80とを備える。【選択図】図2
