A discrete mechanics framework for real time virtual surgical simulations with application to virtual laparoscopic nephrectomy

Xiangmin Zhou, Nan Zhang, Desong Sha, Yunhe Shen, Kumar K Tamma, Rob Sweet

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

The inability to render realistic soft-tissue behavior in real time has remained a barrier to face and content aspects of validity for many virtual reality surgical training systems. Biophysically based models are not only suitable for training purposes but also for patient-specific clinical applications, physiological modeling and surgical planning. When considering the existing approaches for modeling soft tissue for virtual reality surgical simulation, the computer graphics-based approach lacks predictive capability; the mass-spring model (MSM) based approach lacks biophysically realistic soft-tissue dynamic behavior; and the finite element method (FEM) approaches fail to meet the real-time requirement. The present development stems from physics fundamental thermodynamic first law; for a space discrete dynamic system directly formulates the space discrete but time continuous governing equation with embedded material constitutive relation and results in a discrete mechanics framework which possesses a unique balance between the computational efforts and the physically realistic soft-tissue dynamic behavior. We describe the development of the discrete mechanics framework with focused attention towards a virtual laparoscopic nephrectomy application.

Original languageEnglish (US)
Title of host publicationMedicine Meets Virtual Reality 17 - NextMed
Subtitle of host publicationDesign for/the Well Being
PublisherIOS Press
Pages459-464
Number of pages6
ISBN (Print)9781586039646
DOIs
StatePublished - Jan 1 2009
Event17th Annual MMVR Conference - NextMed: Design for/the Well Being, MMVR17 2009 - Long Beach, CA, United States
Duration: Jan 19 2009Jan 22 2009

Publication series

NameStudies in Health Technology and Informatics
Volume142
ISSN (Print)0926-9630
ISSN (Electronic)1879-8365

Other

Other17th Annual MMVR Conference - NextMed: Design for/the Well Being, MMVR17 2009
CountryUnited States
CityLong Beach, CA
Period1/19/091/22/09

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Keywords

  • Discrete mechanics
  • Surgical simulation
  • Virtual Laparoscopic nephrectomy

Cite this

Zhou, X., Zhang, N., Sha, D., Shen, Y., Tamma, K. K., & Sweet, R. (2009). A discrete mechanics framework for real time virtual surgical simulations with application to virtual laparoscopic nephrectomy. In Medicine Meets Virtual Reality 17 - NextMed: Design for/the Well Being (pp. 459-464). (Studies in Health Technology and Informatics; Vol. 142). IOS Press. https://doi.org/10.3233/978-1-58603-964-6-459