A display screen displaying a three-dimensional medical image of a subject to be examined, an operation detection unit receiving an operation input by detecting a touch on the display screen, and a processing setting unit in which a processing table has been set in advance are provided. The processing table links a series of operation inputs to be received on the display screen and kinds of processing to be performed on the image in such a manner that the serial positions of the inputs correspond to the kinds of processing. Further, an image processing unit that performs, on the image, processing corresponding to the serial position of the operation input with reference to the processing table when the operation input has been received on the display screen, and a display control unit that displays, on the display screen, the three-dimensional medical image on which processing has been performed are provided.
