title: 3D tomographic reconstruction of coronary arteries using a precomputed 4D motion field.
abstract: In this paper, we present a new method to perform 3D tomographic reconstruction of coronary arteries from cone-beam rotational x-ray angiography acquisitions. We take advantage of the precomputation of the coronary artery motion, modelled as a parametric 4D motion field. Contrary to data gating or data triggering approaches, we homogeneously use all available frames, independently of the cardiac phase. In addition, we artificially subtract angiograms from their background structures. Our method significantly improves the reconstruction, by removing both motion and background artefacts. We have successfully tested it on the datasets from a synthetic phantom and 10 patients.
authors.affiliation: INRIA, 2004 route des Lucioles, BP93, 06902 Sophia Antipolis, France. Christophe.Blondel@sophia.inria.fr
authors.forename: Christophe
authors.initials: C
authors.lastname: Blondel
authors.forename: Régis
authors.initials: R
authors.lastname: Vaillant
authors.forename: Grégoire
authors.initials: G
authors.lastname: Malandain
authors.forename: Nicholas
authors.initials: N
authors.lastname: Ayache
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D017023:Coronary Angiography / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D016247:Information Storage and Retrieval / Q000379:methods*; D008954:Models, Biological; D009068:Movement; D009716:Numerical Analysis, Computer-Assisted; D019047:Phantoms, Imaging; D011856:Radiographic Image Enhancement / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted; D013382:Subtraction Technique