Abstract:
:Many researchers have proposed the use of biomechanical models for high accuracy soft organ non-rigid image registration, but one main problem in using comprehensive models is the long computation time required to obtain the solution. In this paper we propose to use the Total Lagrangian formulation of the Finite Element method together with Dynamic Relaxation for computing intra-operative organ deformations. We study the best ways of estimating the parameters involved and we propose a termination criteria that can be used in order to obtain fast results with prescribed accuracy. The simulation results prove the accuracy and computational efficiency of the method, even in cases involving large deformations, nonlinear materials and contacts.
journal_name
Comput Methods Appl Mech Engjournal_title
Computer methods in applied mechanics and engineeringauthors
Joldes GR,Wittek A,Miller Kdoi
10.1016/j.cma.2009.06.012subject
Has Abstractpub_date
2009-09-01 00:00:00pages
3313-3320issue
41eissn
0045-7825issn
1879-2138journal_volume
198pub_type
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