Wahle A, Oswald H, Schulze GA, Beier J, Fleck E:


3-D Reconstruction, Modelling and Viewing of Coronary Vessels.

CAR '91, in:

Lemke HU, Rhodes ML, Jaffe CC, Felix R (eds):

Computer Assisted Radiology (CAR '91).

Proceedings of the 5th International Symposium on Computer Assisted Radiology, Berlin, Springer

Page 669-676, 1991

Basics of 3-D reconstruction from biplane angiograms using isocentric geometry model (Images) (Links)

Abstract: A method for three dimensional reconstruction of skeletons of the coronary tree from orthogonal biplane views has been developed. In combination with auxiliary projection lines calculated with the help of geometrical system parameters node points - e.g. vessel branches - are marked interactively. To check the correctness of the 3D model and to estimate the parameters for an optimal view, a pure vector display is used. Additional reconstruction techniques have been established. With the automatic detection of vessel edges, information about vessel direction and diameter is included. The correspondence between two projections of a segment is determined automatically. The vessel cross section may be modelled by the radii - determined from both orthogonal views - to elliptic or circular contours. These contours can be displayed as a wire frame model surrounding the plain vessel skeleton. To improve the presentation of the 3D model a high quality visualization system is used. Two different methods are available: (1) cylinders and spheres are combined for visualization, their diameters are adjusted to the corresponding vessel diameter; (2) the vessel shapes are generated by triangulation with a fixed number of contour points.