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Bulk modulus and volume variation measurement of the liver and the kidneys in vivo using abdominal kinetics during free breathing.

Abstract：

:This article presents a method of predictive simulation, patient-dependant, in real time of the abdominal organ positions during free breathing. The method, that considers both influence of the abdominal breathing and thoracic breathing, needs a tracking of the patient skin and a model of the patient-specific modification of the diaphragm shape. From a measurement of the abdomen viscera kinematic during free breathing, we evaluate through a finite element analysis, the stress field sustained by the organs for a hyperelastic mechanical behaviour using large strain theory. From this analysis, we deduce an in vivo Poisson's ratio and a homogeneous bulk modulus of the liver and kidneys, and compare it to the ones in vitro available in the literature.

journal_name

Comput Methods Programs Biomed

journal_title

Computer methods and programs in biomedicine

authors

Hostettler A,George D,Rémond Y,Nicolau SA,Soler L,Marescaux J

doi

10.1016/j.cmpb.2010.03.003

subject

Has Abstract

pub_date

2010-11-01 00:00:00

pages

149-57

issue

2

eissn

0169-2607

issn

1872-7565

pii

S0169-2607(10)00044-1

journal_volume

100

pub_type

杂志文章

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