Comptes Rendus
no. 7-8
Elasticity reconstruction: Beyond the assumption of local homogeneity
Ralph Sinkus1  ; Jean-Luc Daire2  ; Bernard E. Van Beers2  ; Valerie Vilgrain2
1 Institut Langevin, ESPCI, 10, rue Vauquelin, 75005 Paris, France
2 Centre de recherches biomédicales Bichat-Beaujon, 75018 Paris, France
Comptes Rendus. Mécanique, Volume 338 (2010) no. 7-8, pp. 474-479.

Elasticity imaging is a novel domain which is currently gaining significant interest in the medical field. Most inversion techniques are based on the homogeneity assumption, i.e. the local spatial derivatives of the complex-shear modulus are ignored. This analysis presents an analytic approach in order to overcome this limitation, i.e. first order spatial derivatives of the real-part of the complex-shear modulus are taken into account. Resulting distributions in a gauged breast lesion phantom agree very well with the theoretical expectations. An in-vivo example of a cholangiocarcinoma demonstrates that the new approach provides maps of the viscoelastic properties which agree much better with expectations from anatomy.

Publié le :
DOI : 10.1016/j.crme.2010.07.014
Mots clés : Biomechanics, Elasticity imaging, Inverse problems, Complex-shear modulus, Medical imaging
Ralph Sinkus 1 ; Jean-Luc Daire 2 ; Bernard E. Van Beers 2 ; Valerie Vilgrain 2

1 Institut Langevin, ESPCI, 10, rue Vauquelin, 75005 Paris, France
2 Centre de recherches biomédicales Bichat-Beaujon, 75018 Paris, France 
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     pages = {474--479},
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     year = {2010},
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Ralph Sinkus; Jean-Luc Daire; Bernard E. Van Beers; Valerie Vilgrain. Elasticity reconstruction: Beyond the assumption of local homogeneity. Comptes Rendus. Mécanique, Volume 338 (2010) no. 7-8, pp. 474-479. doi : 10.1016/j.crme.2010.07.014. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2010.07.014/

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