title: Distorted Born diffraction tomography applied to inverting ultrasonic field scattered by noncircular infinite elastic tube.
abstract: This study focuses on the application of ultrasonic diffraction tomography to noncircular 2D-cylindrical objects immersed in an infinite fluid. The distorted Born iterative method used to solve the inverse scattering problem belongs to the class of algebraic reconstruction algorithms. This method was developed to increase the order of application of the Born approximation (in the case of weakly-contrasted media) to higher orders. This yields quantitative information about the scatterer, such as the speed of sound and the attenuation. Quantitative ultrasonic imaging techniques of this kind are of great potential value in fields such as medicine, underwater acoustics and nondestructive testing.
authors.affiliation: Laboratoire de Mécanique et d'Acoustique, UPR CNRS 7051, 31 chemin Joseph Aiguier, 13402 Marseille 20, France.
authors.forename: Philippe
authors.initials: P
authors.lastname: Lasaygues
authors.forename: Régine
authors.initials: R
authors.lastname: Guillermin
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Lefebvre
mesh_terms: D000465:Algorithms; D004548:Elasticity; D007091:Image Processing, Computer-Assisted; D008433:Mathematics; D019047:Phantoms, Imaging; D012815:Signal Processing, Computer-Assisted; D014463:Ultrasonography / Q000379:methods*