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.
Ralph Sinkus 1 ; Jean-Luc Daire 2 ; Bernard E. Van Beers 2 ; Valerie Vilgrain 2
@article{CRMECA_2010__338_7-8_474_0, author = {Ralph Sinkus and Jean-Luc Daire and Bernard E. Van Beers and Valerie Vilgrain}, title = {Elasticity reconstruction: {Beyond} the assumption of local homogeneity}, journal = {Comptes Rendus. M\'ecanique}, pages = {474--479}, publisher = {Elsevier}, volume = {338}, number = {7-8}, year = {2010}, doi = {10.1016/j.crme.2010.07.014}, language = {en}, }
TY - JOUR AU - Ralph Sinkus AU - Jean-Luc Daire AU - Bernard E. Van Beers AU - Valerie Vilgrain TI - Elasticity reconstruction: Beyond the assumption of local homogeneity JO - Comptes Rendus. Mécanique PY - 2010 SP - 474 EP - 479 VL - 338 IS - 7-8 PB - Elsevier DO - 10.1016/j.crme.2010.07.014 LA - en ID - CRMECA_2010__338_7-8_474_0 ER -
%0 Journal Article %A Ralph Sinkus %A Jean-Luc Daire %A Bernard E. Van Beers %A Valerie Vilgrain %T Elasticity reconstruction: Beyond the assumption of local homogeneity %J Comptes Rendus. Mécanique %D 2010 %P 474-479 %V 338 %N 7-8 %I Elsevier %R 10.1016/j.crme.2010.07.014 %G en %F CRMECA_2010__338_7-8_474_0
Ralph Sinkus; Jean-Luc Daire; Bernard E. Van Beers; Valerie Vilgrain. Elasticity reconstruction: Beyond the assumption of local homogeneity. Comptes Rendus. Mécanique, Inverse problems, 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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