Int J Comput Assist Radiol Surg - Background-incorporated volumetric model for patient-specific surgical simulation: a segmentation-free, modeling-free framework.

Tópicos

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Resumo

RPOSE: 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.CONCLUSION: 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.

Resumo Limpo

rpose patientspecif surgic simul impos practic technic challeng propos segmentationfre modelingfre framework creat medic volumetr model intuit volum deform manipul patientspecif surgic simulationmethod propos framework creat volumetr model base upon new form mesh structur volum proxi mesh vpm model can generat two phase vertex placement phase mesh improv phase vertic vpm assign initi locat curvaturebas vertex placement method follow mesh improv perform particl swarm optim psoresult framework appli sever kidney ct volum data use framework result model close tailor detail featur dataset moreov result vpm mesh can support broader spectrum deform manipul organ surround tissu progress mesh qualiti final mesh also show pso feasibl mesh improvementconclus framework appli sever kidney ct volum dataset use framework result model close tailor detail featur dataset moreov result vpm mesh can support broader spectrum deform manipul organ surround tissu evalu final mesh qualiti show pso feasibl mesh improv

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