An ultrasonic diagnostic apparatus, that generates image data of a C-mode image of an examination-target portion based on volume data generated through an ultrasonic scan of an object and for displaying the C-mode image, has a curved C-mode surface generating unit and a curved C-mode image generating unit. The curved C-mode surface generating unit generates, based on the volume data, a curved C-mode surface formed by a curved surface that curves without including a non-visualized portion. The curved C-mode image generating unit generates image data of a curved C-mode image based on data of the curved C-mode surface generated by the curved C-mode surface generating unit.