[Problem] To obtain a conveyance assistance method and device for a radiation emitting device that make it possible to set an appropriate position for the imaging position of a radiation emitting device holding a radiation source, and to obtain a radiological imaging device. [Solution] This conveyance assisting means is equipped with: a means for setting the target position of a radiation emitting device at which a radiation source can be disposed in a radiation emission position within the movable range of a radiation source holding unit where radiological imaging on a radiological image recording medium is possible, and at which a workspace can be ensured around the radiation emitting device a means for detecting the current position of the radiation emitting device a means for detecting the locations of obstacles and a notification means for issuing notifications that assist the conveyance of the radiation emitting device to the target position on the basis of the target position, the current position of the device, and the locations of obstacles. The target position setting means, current position detecting means, and obstacle location detecting means are constituted by cameras (28A to 28D) and a control device (22), and the notification means is constituted by the cameras (28A to 28D), the control device (22), a monitor (23), and a speaker (18).[Problème] Obtenir un procédé et un dispositif dassistance au déplacement pour un dispositif démission de rayonnement qui permettent de définir une position appropriée en tant que position dimagerie dun dispositif démission de rayonnement abritant une source de rayonnement, et obtenir un dispositif dimagerie radiologique. [Solution] Le présent moyen dassistance au déplacement est équipé dun moyen de définition de la position cible dun dispositif démission de rayonnement au niveau de laquelle une source de rayonnement peut être disposée dans une position démission de rayonnement à lintérieur de la plage de déplacement dun
