Automatic three-dimensional reconstruction of vascular geometry from bi-planar angiographic image sequences

Automatic reconstruction of three-dimensional vascular geometry from biplanar angiographic image sequences. In this paper a method is presented to automatically determine the three dimensional geometry of a stationary vessel tree from orthogonal biplanar digital angiographic image sequences, without a priori knowledge or user interaction. Vessels are identified unambiguously by their position in each projection and by comparison of time-density curves. Since the volume being reconstructed has a treelike structure branching out from the injection site, the contrast time of arrival (or transit time) is related to the vessel path length and thus serves to remove ambiguities that would be present if only two static views were used. Single-plane angiographic sequences are used to illustrate the technique, simulating a single section of three-dimensional data