According to one embodiment, there is provided an ultrasonic diagnosis apparatus which generates a plurality of volume data over a predetermined period, executes setting of a position of at least one MPR slice relative to volume data, of the plurality of volume data, which corresponds to a first time phase, and sets positions of MPR slices corresponding to the at least one set MPR slice with respect to remaining volume data, executes segmentations of at least part of the heart into a plurality of segments, executes three-dimensional tracking processing, and optimizes the position of the MPR slice which is set in a predetermined time phase, based on the positions of the plurality of segments, and optimizes positions of the MPR slices set for the remaining volume data in association with the optimization.