According to one embodiment, a medical image diagnostic apparatus includes processing circuitry. The processing circuitry acquires at least one piece of spatial analysis information obtained by analyzing medical image data of an object, the medical image data being generated by another medical image diagnostic apparatus of modality different from an own apparatus. The processing circuitry then generates a superimposed image by superimposing an image indicating the at least one piece of spatial analysis information on a first medical image of the object generated by the own apparatus, and causes a display to display the superimposed image.