Patent ID: 7683915

Claim:
An image displaying apparatus including a monitor and a display function unit for displaying an original image that is reconstructed based on image data of an object acquired through an image radiography apparatus, and for displaying first posture data of the original image determined based on coordinates or direction cosines of at least one of the radiography apparatus and a supporting means for the object, wherein the display function unit comprises: an image rotating operation unit configured to two or three dimensionally rotate the original image by centering the image on a reference axis among the coordinates or direction cosines on the monitor along a predetermined direction within a predetermined angle, so as to reduce a displacement between the first posture data displayed on the monitor and an actual posture of the object at a time of radiography; a decision unit configured to determine the two or three dimensionally rotated position of the original image as second posture data for the rotated original image in order to correct the displacement based on a relative position between the first posture data and a direction of the rotated original image; and a posture data correcting unit configured to display the decided second posture data on the monitor together with the two or three dimensionally rotated original image by replacing the first posture data on the monitor.