In order so that a scan range or a reconstruction range can be efficiently confirmed within a limited time during examination, the present invention relates to an X-ray CT apparatus that acquires and displays tomographic images of an object and is characterized by comprising a mode setting unit that sets a display time per confirmation image or the number of the confirmation images to be displayed as a mode that displays the confirmation images to be used for confirming the scan range and the reconstruction range according to a predetermined wait time and a display control unit that displays the confirmation images according to the display time or the number of display images set by the mode setting unit.
