title: Image-guided simulation of tissue deformation using a mechanical model on a surgical application.
abstract: This paper presents a method for localizing the position of a liver and a tumor within the tissue during a minimally invasive liver operation. From pre-operative CT scans, the liver volume and its internal structures are segmented using image-processing techniques. Based on these segmentations, a three-dimensional mechanical model is built to compute the liver volume and internal structure displacement under boundary conditions such as external forces from the surgical instrument. This can help the surgeon understand the motion of internal structures when manipulating the liver. To validate our method, an experiment on a porcine liver explant was performed to assess the difference between actual tissue motion and the mechanical model.
authors.affiliation: a Department of Computer Science , University of Houston , Houston , TX , USA.|b Methodist Institute for Technology , Innovation and Education - Houston Methodist Hospital , Houston , TX , USA.
authors.forename: Toan B
authors.initials: TB
authors.lastname: Nguyen
authors.affiliation: b Methodist Institute for Technology , Innovation and Education - Houston Methodist Hospital , Houston , TX , USA.
authors.forename: Albert Y
authors.initials: AY
authors.lastname: Huang
authors.affiliation: b Methodist Institute for Technology , Innovation and Education - Houston Methodist Hospital , Houston , TX , USA.
authors.forename: Vid
authors.initials: V
authors.lastname: Fikfak
authors.affiliation: b Methodist Institute for Technology , Innovation and Education - Houston Methodist Hospital , Houston , TX , USA.
authors.forename: Brian J
authors.initials: BJ
authors.lastname: Dunkin
authors.affiliation: a Department of Computer Science , University of Houston , Houston , TX , USA.|b Methodist Institute for Technology , Innovation and Education - Houston Methodist Hospital , Houston , TX , USA.|c LaSIE UMR - 7356 CNRS , University of La Rochelle , La Rochelle , France.
authors.forename: Marc
authors.initials: M
authors.lastname: Garbey
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena; D003198:Computer Simulation; D007091:Image Processing, Computer-Assisted; D008099:Liver / Q000601:surgery; D019060:Minimally Invasive Surgical Procedures; D008954:Models, Biological; D015203:Reproducibility of Results; D013552:Swine; D014057:Tomography, X-Ray Computed
keywords: Image segmentation; hepatic surgery; mechanical model; simulation; surgical planning; tissue model validation