Temporal tracking of 3D coronary arteries in projection angiograms

Abstract : A method for 3D temporal tracking of a 3D coronary tree model through a sequence of biplane cineangiography images has been developed. A registration framework is formulated in which the coronary tree centerline model deforms in an external potential ¯eld de¯ned by a multiscale analysis response map computed from the angiogram images. To constrain the procedure and to improve convergence, a set of three motion models is hierarchically used: a 3D rigid-body transformation, a 3D a±ne transformation, and a 3D B-spline deformation ¯eld. This 3D motion tracking approach has signi¯cant advantages over 2D methods: (1) coherent deformation of a single 3D coronary reconstruction preserves the topology of the arterial tree; (2) constraints on arterial length and regularity, which lack meaning in 2D projection space, are directly applicable in 3D; and (3) tracking arterial segments through occlusions and crossings in the projection images is simpli¯ed with knowledge of the 3D relationship of the arteries. The method has been applied to patient data and results are presented.
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Guy Shechter, Frédéric Devernay, Ève Coste-Manière, Elliot Mcveigh. Temporal tracking of 3D coronary arteries in projection angiograms. Medical Imaging, SPIE, 2002, San Diego, United States. ⟨10.1117/12.467204⟩. ⟨inria-00262390⟩

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