XFEM-based modeling of successive resections for preoperative image updating

被引：0
|
作者：
Vigneron, Lara M. [1 ]
Robe, Pierre A. [2 ]
Warfield, Simon K. [3 ]
Verly, Jacques G. [1 ]
机构：
[1] Univ Liege, Dept Elect Engn & Comp Sci, Signal & Image Exploitat Grp INTELSIG, Liege, Belgium
[2] Univ Liege, Dept Neurosurg, Univ Hosp CHU, Liege, Belgium
[3] Harvard Med Sch, Brigham & Womens Hosp, Childrens Hosp, Computat Radiol Lab, Boston, MA USA
来源：
MEDICAL IMAGING 2006: VISUALIZATION, IMAGE-GUIDED PROCEDURES, AND DISPLAY | 2006年 / 6141卷
关键词：
image-guided surgery; brain; intraoperative; interventional; MRI; nonrigid; registration; biomechanical model; retraction; resection; extended finite element method; XFEM; FEM;
D O I：
10.1117/12.649257
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
We present a new method for modeling organ deformations due to successive resections. We use a biomechanical model of the organ, compute its volume-displacement solution based on the eXtended Finite Element Method (XFEM). The key feature of XFEM is that material discontinuities induced by every new resection can be handled without remeshing or mesh adaptation, as would be required by the conventional Finite Element Method (FEM). We focus on the application of preoperative image updating for image-guided surgery. Proof-of-concept demonstrations are shown for synthetic and real data in the context of neurosurgery.
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页数：9
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