PROBLEM TO BE SOLVED: To accurately detect an X-ray irradiation area by highly accurately detecting a side located at a negative electrode side out of four sides of the X-ray irradiation area.SOLUTION: X-ray equipment includes: an X-ray source having an X-ray tube for irradiating a subject with an X ray an X-ray beam limiting device for restricting an X-ray irradiation area in which the X-ray is applied from the X-ray source to the subject an X-ray detector for detecting the X ray that is applied via the X-ray beam limiting device and transmitted through the subject an image processing part for generating an X-ray image on the basis of an electric signal to be output from the X-ray detector a negative electrode detection part that detects negative electrode position information representing a side located at a negative electrode side of the X-ray tube out of four sides of the X-ray irradiation area in the X-ray image generated by the image processing part and an irradiation area detection part that detects the X-ray irradiation area in the X-ray image on the basis of the negative electrode position information obtained by the negative electrode detection part.SELECTED DRAWING: Figure 1【課題】 X線照射領域の4辺のうち陰極側に位置する辺についても精度よく検出し、X線照射領域を正確に検出する。【解決手段】 被検体にX線を照射するX線管球を有するX線源と、該X線源から被検体に照射されるX線照射領域を制限するX線絞りと、該X線絞りを介して照射され、前記被検体を透過したX線を検出するX線検出器と、該X線検出器から出力される電気信号に基づいてX線画像を生成する画像処理部と、該画像処理部によって生成されたX線画像におけるX線照射領域の4辺のうち、前記X線管球の陰極側に位置する辺を示す陰極位置情報を検出する陰極検出部と、前記陰極検出部より得られた陰極位置情報に基づいて、前記X線画像におけるX線照射領域を検出する照射領域検出部と、を備えたX線撮影装置を提供する。【選択図】図1
