Patent ID: 8004524

Claim:
A method for displaying a 3D structure of an object in a 2D projection image of the object, comprising: providing a 3D data record of the object by an x-ray diagnostic unit; implementing a surface segmentation of the 3D data record for determining a surface standard for a surface point of the 2D projection image by a computing device; calculating an angle of the surface standard against a plane that is perpendicular to an image plane by the computing device; marking the surface point based on the calculated angle that is in a range of −90° to 90° by the computing device; and illustrating a depth of the 3D structure in a direction of a surface standard of the 2D projection image by a property of the illustrated 3D structure using the marked surface point by a display device, wherein the depth of the 3D structure is illustrated in the direction of the surface standard of the 2D projection image from coming out of the image plane at a positive angle to going into the image plane at a negative angle and being parallel to the image plane at a zero angle.