Direct volume manipulation for visualizing intraoperative liver resection process

Comput Methods Programs Biomed. 2014 Mar;113(3):725-35. doi: 10.1016/j.cmpb.2013.12.004. Epub 2014 Jan 2.

Abstract

This paper introduces a new design and application for direct volume manipulation for visualizing the intraoperative liver resection process. So far, interactive volume deformation and resection have been independently handled due to the difficulty of representing elastic behavior of volumetric objects. Our framework models global shape editing and discontinuous local deformation by merging proxy geometry encoding and displacement mapping. A local-frame-based elastic model is presented to allow stable editing of the liver shape including bending and twisting while preserving the volume. Several tests using clinical CT data have confirmed the developed software and interface can represent the intraoperative state of liver and produce local views of reference vascular structures, which provides a "road map of vessels" that are key features when approaching occluded tumors during surgery.

Keywords: Computer aided surgery; Liver resection; Shape editing; Volume manipulation.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Algorithms
  • Computational Biology
  • Digestive System Surgical Procedures / statistics & numerical data
  • Elasticity
  • Finite Element Analysis
  • Humans
  • Imaging, Three-Dimensional / statistics & numerical data*
  • Intraoperative Period
  • Liver / pathology*
  • Liver / surgery*
  • Liver Neoplasms / pathology*
  • Liver Neoplasms / physiopathology
  • Liver Neoplasms / surgery*
  • Models, Biological
  • Organ Size
  • Software
  • Surgery, Computer-Assisted / statistics & numerical data*