Patent ID: 7978813

Claim:
An x-ray CT imaging apparatus for emitting an x-ray cone beam to an object to generate an x-ray CT image on the basis of a transmission x-ray which is transmitted through the object, comprising: an x-ray generator; an x-ray image sensor provided oppositely to said x-ray generator with said object interposed there between, for outputting x-ray projection data in accordance with a transmission x-ray which is transmitted through said object; an imaging mode selection part for selecting a mode from a plurality of x-ray CT imaging modes with x-ray CT imaging regions of different shapes; an image generation part for generating an x-ray CT image in accordance with the x-ray CT imaging mode selected by said imaging mode selection part on the basis of the x-ray projection data outputted from said x-ray image sensor and for generating an image obtained by superposing an imaging object region display on a position setting image representing said object; an operation part for receiving an operation for moving said imaging object region display relatively to said position setting image; a moving mechanism part for positioning said x-ray generator and said x-ray image sensor relatively to said object in accordance with the position of said imaging object region display; and a display part for displaying an image generated by said image generation part, wherein said image generation part changes said imaging object region display in accordance with which of the plurality of x-ray CT imaging modes is selected by said imaging mode selection part.