Background-incorporated volumetric model for patient-specific surgical simulation: a segmentation-free, modeling-free framework.
OBJECTIVE
Patient-specific surgical simulation imposes both practical and technical challenges. We propose a segmentation-free, modeling-free framework that creates medical volumetric models for intuitive volume deformation and manipulation in patient-specific surgical simulation.


METHODS
The proposed framework creates a volumetric model based upon a new form of mesh structure, a Volume Proxy Mesh (VPM). The model can be generated in two phases: the vertex placement phase and mesh improvement phase. Vertices of a VPM are assigned to an initial location by curvature-based vertex placement method, and followed by mesh improvement performed by Particle Swarm Optimization (PSO).


RESULTS
The framework is applied to several kidney CT volume data. Using the framework, the resulting models are closely tailored to the detailed features of the datasets. Moreover, the resulting VPM meshes can support broader spectrum deformation between the manipulated organ and its surrounding tissues. Progress in the mesh quality of the final mesh also shows that PSO is feasible for mesh improvement.


CONCLUSIONS
The framework was applied to several kidney CT volume datasets. Using the framework, the resulting models are closely tailored to the detailed features of the datasets. Moreover, the resulting VPM meshes can support broader spectrum deformation between the manipulated organ and its surrounding tissues. Evaluation of final mesh quality shows that PSO is feasible for mesh improvement.
Hung
Kei Wai Cecilia
KW
Graduate School of Information Science, Nara Institute of Science and Technology, Nara, Japan. hung-c@is.naist.jp
Nakao
Megumi
M
Yoshimura
Koji
K
Minato
Kotaro
K
D000465:Algorithms; D003198:Computer Simulation; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008962:Models, Theoretical; D013514:Surgical Procedures, Operative
Ann Surg. 2006 Mar;243(3):291-300
16495690
Med Image Anal. 1998 Jun;2(2):121-32
10646758
World J Surg. 2008 Feb;32(2):208-12
18066615
Ann Thorac Surg. 2009 Dec;88(6):1851-6
19932248
J Am Coll Surg. 2001 Dec;193(6):660-5
11768683
Med Educ. 2003 Mar;37(3):267-77
12603766
World J Surg. 2008 Feb;32(2):141-8
18097716
J Biomech. 2007;40(4):919-29
16678834
IEEE Trans Vis Comput Graph. 2007 Nov-Dec;13(6):1704-11
17968128