title: Three-dimensional tracking of coronary arteries from biplane angiographic sequences using parametrically deformable models.
abstract: A new method for coronary artery tracking in biplane digital subtraction is presented. The dynamic tracking of nonrigid objects from two views is achieved using a generalization of parametrically deformable models. Three-dimensional (3-D) Fourier descriptors used for shape representation are obtained from the two-dimensional (2-D) descriptors of the projections. A new constraint inferred from epipolar geometry is applied to the contour model. Direct 3-D tracking is compared with the classical approach in two steps: independent 2-D tracking in each of the two projection planes; 3-D reconstruction using the epipolar constraint. Convergence quality and accuracy of the 3-D reconstruction are analyzed for several sequences showing different displacement amplitudes, deformation rates and image contrasts.
authors.affiliation: Medical Image Research Team (ERIM), Faculty of Medicine, Auvergne University, Clermont-Ferrand, France. laurent.sarry@u-clermont1.fr
authors.forename: L
authors.initials: L
authors.lastname: Sarry
authors.forename: J Y
authors.initials: JY
authors.lastname: Boire
mesh_terms: D017023:Coronary Angiography / Q000379:methods*; D003327:Coronary Disease / Q000000981:diagnostic imaging; D003331:Coronary Vessels / Q000033:anatomy & histology; D004548:Elasticity; D005583:Fourier Analysis; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods / Q000706:statistics & numerical data; D021621:Imaging, Three-Dimensional / Q000145:classification / Q000379:methods*; D008955:Models, Cardiovascular; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity