Modeling of Nonlinear Elastic Tissues for Surgical Simulation
Identifieur interne : 001E32 ( Pmc/Checkpoint ); précédent : 001E31; suivant : 001E33Modeling of Nonlinear Elastic Tissues for Surgical Simulation
Auteurs : Sarthak Misra ; K. T. Ramesh ; Allison M. OkamuraSource :
- Computer methods in biomechanics and biomedical engineering [ 1025-5842 ] ; 2010.
Abstract
Realistic modeling of the interaction between surgical instruments and human organs has been recognized as a key requirement in the development of high-fidelity surgical simulators. Primarily due to computational considerations, most of the past real-time surgical simulation research has assumed linear elastic behavior for modeling tissues, even though human soft tissues generally possess nonlinear properties. For a nonlinear model, the well-known Poynting effect developed during shearing of the tissue results in normal forces not seen in a linear elastic model. Using constitutive equations of nonlinear tissue models together with experiments, we show that the Poynting effect results in differences in force magnitude larger than the absolute human perception threshold for force discrimination in some tissues (e.g. myocardial tissues) but not in others (e.g. brain tissue simulants).
Url:
DOI: 10.1080/10255840903505121
PubMed: 20503126
PubMed Central: 3050496
Affiliations:
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<front><journal-meta><journal-id journal-id-type="nlm-journal-id">9802899</journal-id><journal-id journal-id-type="pubmed-jr-id">22066</journal-id><journal-id journal-id-type="nlm-ta">Comput Methods Biomech Biomed Engin</journal-id><journal-title>Computer methods in biomechanics and biomedical engineering</journal-title><issn pub-type="ppub">1025-5842</issn><issn pub-type="epub">1476-8259</issn></journal-meta><article-meta><article-id pub-id-type="pmid">20503126</article-id><article-id pub-id-type="pmc">3050496</article-id><article-id pub-id-type="doi">10.1080/10255840903505121</article-id><article-id pub-id-type="manuscript">NIHMS195281</article-id><article-categories><subj-group subj-group-type="heading"><subject>Article</subject></subj-group></article-categories><title-group><article-title>Modeling of Nonlinear Elastic Tissues for Surgical Simulation</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Misra</surname><given-names>Sarthak</given-names></name><xref rid="FN1" ref-type="author-notes">*</xref></contrib><contrib contrib-type="author"><name><surname>Ramesh</surname><given-names>K. T.</given-names></name></contrib><contrib contrib-type="author"><name><surname>Okamura</surname><given-names>Allison M.</given-names></name></contrib><aff id="A1">Department of Mechanical Engineering, The Johns Hopkins University, Baltimore, USA</aff></contrib-group><author-notes><corresp id="FN1">Corresponding author. <email>sarthak@jhu.edu</email></corresp></author-notes><pub-date pub-type="nihms-submitted"><day>16</day><month>4</month><year>2010</year></pub-date><pub-date pub-type="ppub"><month>12</month><year>2010</year></pub-date><pub-date pub-type="pmc-release"><day>1</day><month>11</month><year>2011</year></pub-date><volume>13</volume><issue>6</issue><fpage>811</fpage><lpage>818</lpage><abstract><p id="P1">Realistic modeling of the interaction between surgical instruments and human organs has been recognized as a key requirement in the development of high-fidelity surgical simulators. Primarily due to computational considerations, most of the past real-time surgical simulation research has assumed linear elastic behavior for modeling tissues, even though human soft tissues generally possess nonlinear properties. For a nonlinear model, the well-known Poynting effect developed during shearing of the tissue results in normal forces not seen in a linear elastic model. Using constitutive equations of nonlinear tissue models together with experiments, we show that the Poynting effect results in differences in force magnitude larger than the absolute human perception threshold for force discrimination in some tissues (e.g. myocardial tissues) but not in others (e.g. brain tissue simulants).</p></abstract><kwd-group><kwd>haptics</kwd><kwd>hyperelasticity</kwd><kwd>poynting effect</kwd><kwd>nonlinear elasticity</kwd><kwd>soft tissue mechanics</kwd><kwd>surgical simulation</kwd></kwd-group><contract-num rid="EB1">R01 EB006435-03
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