Direct volume manipulation for visualizing intraoperative liver resection process.
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.
Graduate School of Informatics, Kyoto University, Japan. Electronic address: megumi@i.kyoto-u.ac.jp.
Megumi
M
Nakao
Graduate School of Information Science, Nara Institute of Science and Technology, Japan.
Yuya
Y
Oda
Department of Hepato-Biliary-Pancreatic and Transplant Surgery, Kyoto University Hospital, Japan.
Kojiro
K
Taura
Graduate School of Information Science, Nara Institute of Science and Technology, Japan.
Kotaro
K
Minato
D000465:Algorithms; D019295:Computational Biology; D013505:Digestive System Surgical Procedures / Q000706:statistics & numerical data; D004548:Elasticity; D020342:Finite Element Analysis; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000706:statistics & numerical data*; D007432:Intraoperative Period; D008099:Liver / Q000473:pathology* / Q000601:surgery*; D008113:Liver Neoplasms / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery*; D008954:Models, Biological; D009929:Organ Size; D012984:Software; D025321:Surgery, Computer-Assisted / Q000706:statistics & numerical data*
Computer aided surgery; Liver resection; Shape editing; Volume manipulation