An X-ray diagnosis apparatus according to an embodiment includes processing circuitry configured: to acquire a two-dimensional X-ray image of an examined subject imaged in a first imaging process; to designate at least one track on which an X-ray generator is to move in a second imaging process to be performed after the first imaging process; and to perform a predicting process of predicting, on the basis of the two-dimensional X-ray image and the track, an artifact that is to occur when the second imaging process is performed by using the track.