Patent ID: 8098919

Claim:
A device for the three-dimensional reconstruction of a moving object in a body volume, comprising a memory for storing a series of two-dimensional projection photographs (A 1 , A 2 , . . . , A n , . . . , A N ) of the body volume from different directions and states of the body volume, and a data processing unit coupled to the memory for executing the following steps: a) segmenting a projection image (Pr n (Q)) of at least one feature point (Q) of the object or its surroundings in each of the projection photographs; b) specifying randomly a spatial reference position (Q 0 ) for the at least one feature point (Q) of the object or its surroundings on which subsequently all of the projection photographs are to be aligned, wherein the spatial reference position (Q 0 ) of a corresponding at least one feature point (Q) is randomly specified from two projection photographs (i) that originate from a similar state of the body volume (ii) but from different directions; c) calculating transformations (Σ n , σ n ) of the object space and of the projection photographs which link positions of the feature points for different states of the body volume, wherein a projection of a transformed randomly specified spatial reference position (Q 0 ) coincides with a respective transformed image of a corresponding at least one feature point (Q) for the different states of the body volume; and d) reconstructing the object three-dimensionally from the stored two-dimensional projection photographs using the calculated transformations (Σ n , σ n ), wherein reconstructing includes using all transformed projection photographs from the different states of the body volume.