Patent ID: 8529128

Claim:
A radiation imaging apparatus, comprising: movement assisting means, for assisting manual movement of a device which is employed to perform radiation imaging, by urging the device; an operating portion that enables operation of a movement of the device, which is assisted by the movement assisting means; detecting means, for detecting external forces which are applied to the operating portion, and outputs signals indicating intensities and directions of the external forces; control means, for controlling the movement assisting means to assist movement of the device in the directions of the external forces indicated by the signals output from the detecting means, and for controlling the movement assisting means to not assist manual movement of the device when the values of the signals are included within a dead zone range; judging means, for judging whether the operating portion is being operated based on a state of change of the signals regardless of the intensities of the values of the signals; and correcting means, for performing corrections such that the values of signals, which are obtained while it is judged that the operating portion is not being operated, are included in the dead zone range with respect to control exerted by the control means.