Computerized Medical Imaging and Graphics
Volume 33, Issue 1 , Pages 63-71, January 2009

An advanced hybrid cutting method with an improved state machine for surgical simulation

  • Jingsi Zhang

      Affiliations

    • Med-X research institute, Shanghai Jiao Tong University, China
    • ,
  • Lixu Gu

      Affiliations

    • Med-X research institute, Shanghai Jiao Tong University, China
    • Computer Science, Shanghai Jiao Tong University, China
    • Corresponding Author InformationCorresponding author at: Computer Science, Shanghai Jiao Tong University, China. Tel.: +86 21 34204137.
    • ,
  • Xiaobo Li

      Affiliations

    • Med-X research institute, Shanghai Jiao Tong University, China
    • ,
  • Min Fang

      Affiliations

    • Shanghai Yueyang Hospital, China

Received 29 December 2007; received in revised form 17 September 2008; accepted 27 October 2008.

Abstract 

In this work, a novel hybrid cutting method combining non-progressive cutting with progressive cutting is proposed, where progressive cutting is applied on the outer hull while non-progressive cutting is applied in the inner core. Therefore it keeps the visual reality while significantly increases the efficiency and stability for consequent soft-tissue simulation. In addition, we combined the nearest node snapping with the subdivision patterns in topology reconstruction to avoid degeneracy which is disastrous to soft-tissue simulation stability. Furthermore, an improved state-machine with shortcut transition is used to improve efficiency. The approach has been integrated into a virtual laparoscopic surgery training system.

Keywords: Virtual surgery, Hybrid cutting, Progressive, Non-progressive

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PII: S0895-6111(08)00116-X

doi:10.1016/j.compmedimag.2008.10.007

Computerized Medical Imaging and Graphics
Volume 33, Issue 1 , Pages 63-71, January 2009

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