Disclosed is a radiation image pickup device of the type in which transmitted-image video is acquired, and once transmission-imaging has been discontinued, static imaging or video image pickup for diagnostic purposes is performed, in which an image of a subject of suitable brightness can be picked up. The device is of the type that acquires transmitted-image video, and once transmission-imaging has been discontinued, static imaging or video image pickup for diagnostic purposes is performed. The control conditions (image pickup conditions) of an X-ray tube (3) for static image pickup are determined based on the control conditions of the X-ray tube (3) when the transmitted image is acquired. Also, the brightness of the subject (M) that was imaged in the transmission image is taken into account when determining the image pickup conditions. In this way, suitable image pickup conditions can be acquired, even if live image acquisition is discontinued prior to achieving an appropriate intensity of radiation in the live image acquisition stage. Consequently, with this device, a clear image can be acquired with an appropriate level of exposure.Linvention concerne un dispositif danalyse dimages radiographiques du type permettant dacquérir des images vidéo transmises, et après interruption de limagerie de transmission, deffectuer une imagerie statique ou une analyse dimages vidéo à des fins de diagnostic, dans lequel une image dun sujet de luminosité appropriée peut être analysée. Le dispositif est du type permettant dacquérir des images vidéo transmises, et après interruption de limagerie de transmission, deffectuer une imagerie statique ou une analyse dimages vidéo à des fins de diagnostic. Les conditions de commande (conditions danalyse dimages) dun tube radiogène (3) pour lanalyse statique dimages sont déterminées en fonction des conditions de commande du tube radiogène (3) lors de lacquisition des images transmises. De plus, la luminosité du sujet (M) ayant subi limagerie
