title: Volume Calculation of Venous Thrombosis Using 2D Ultrasound Images.
abstract: Venous thrombosis screening exams use 2D ultrasound images, from which medical experts obtain a rough idea of the thrombosis aspect and infer an approximate volume. Such estimation is essential to follow up the thrombosis evolution. This paper proposes a method to calculate venous thrombosis volume from non-parallel 2D ultrasound images, taking advantage of a priori knowledge about the thrombosis shape. An interactive ellipse fitting contour segmentation extracts the 2D thrombosis contours. Then, a Delaunay triangulation is applied to the set of 2D segmented contours positioned in 3D, and the area that each contour defines, to obtain a global thrombosis 3D surface reconstruction, with a dense triangulation inside the contours. Volume is calculated from the obtained surface and contours triangulation, using a maximum unit normal component approach. Preliminary results obtained on 3 plastic phantoms and 3 in vitro venous thromboses, as well as one in vivo case are presented and discussed. An error rate of volume estimation inferior to 4,5% for the plastic phantoms, and 3,5% for the in vitro venous thromboses was obtained.
authors.affiliation: GET - ENST Bretagne, Département Image et Traitement de l'Information, Brest, France; INSERM - U650, Laboratoire de Traitement de l'Information Médicale, Brest, France.
authors.forename: M
authors.initials: M
authors.lastname: Dhibi
authors.forename: J
authors.initials: J
authors.lastname: Puentes
authors.forename: L
authors.initials: L
authors.lastname: Bressollette
authors.forename: B
authors.initials: B
authors.lastname: Guias
authors.forename: B
authors.initials: B
authors.lastname: Solaiman