Ultrasonic Computed Tomography

Abstract : Ultrasonic Computed Tomography (UCT) is a full digital imaging technique, which consists in numerically solving the inverse scattering problem associated to the forward scattering problem describing the interaction of ultrasonic waves with inhomogeneous media. For weakly inhomogeneous media such as soft tissues, various approximations of the solution of the forward problem (straight ray approximation, Born approximation...), leading to easy-to-implement approximations of the inverse scattering problem (back-projection or back-propagation algorithms) can be used. In the case of highly heterogeneous media such as bone surrounded by soft tissues, such approximations are no more valid. We present here two non-linear inversion schemes based on high-order approximations. These methods are conceived like the prolongation of the methods implemented in the weakly inhomogeneous case for soft tissues. The results show the feasibility of this UCT approach to bones and its potential to perform measurements in vivo.
Type de document :
Chapitre d'ouvrage
P. Laugier, G. Haiat. Bone Quantitative Ultrasound, Springer, pp.441-459, 2010
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Contributeur : Philippe Lasaygues <>
Soumis le : jeudi 17 juin 2010 - 11:22:45
Dernière modification le : lundi 29 janvier 2018 - 16:06:02
Document(s) archivé(s) le : lundi 20 septembre 2010 - 17:13:51


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  • HAL Id : hal-00492836, version 1


Philippe Lasaygues, Régine Guillermin, Jean-Pierre Lefebvre. Ultrasonic Computed Tomography. P. Laugier, G. Haiat. Bone Quantitative Ultrasound, Springer, pp.441-459, 2010. 〈hal-00492836〉



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