The medical image diagnostic apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to: generate medical volume data including bones and an organ; identify, based on the volume data, the organ and an abnormal bone having an abnormal region of the bones; calculate, based on the organ and the abnormal bone of the volume data, an influence rate on the organ by the abnormal bone; and superimpose data indicating the influence rate on the image based on the volume data, thereby displaying the superimposed image on a display.