Xi Ding

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This paper presents an intuitive nose surgery planning and simulation system, using 3D laser scan image and lateral X-ray image, to provide high quality prediction of the postoperative appearance, and design the patient specific prosthesis model automatically. After initial registration, the internal surface of soft tissue at the nose region was generated(More)
Although it is well known that human bone tissues have obvious orthotropic material properties, most works in the physical modeling field adopted oversimplified isotropic or approximated transversely isotropic elasticity due to the simplicity. This paper presents a convenient methodology based on harmonic fields, to construct volumetric finite element mesh(More)
The accurate tooth partition of dental mesh is a crucial step in computer-aided orthodontics. However, tooth boundary identification is not a trivial task for tooth partition, since different shapes and their arrangements vary substantially among common clinical cases. Though curvature field is traditionally used for identifying boundaries, it is normally(More)
OBJECTIVE The study was to investigate the impact of orthotropic material on the biomechanics of dental implant, based on a detailed mandible with high geometric and mechanical similarity. MATERIALS AND METHODS Multiple data sources were used to elaborate detailed biological structures and implant CAD models. In addition, an extended orthotropic material(More)
Proxy Mobile IPv6(PMIPv6) [1], as one of the most promising technologies for the next generation IP network, has attracted much attention in academia and industry. As an extension of PMIPv6, localized routing optimization can improve the performance of local communication greatly. However, recent study on localized routing optimizations only focus on(More)
The combination of grid technology and M&S (Modeling and Simulation) is an important direction for distributed simulation nowadays, and SimuGrid (Simulation Grid) we are developing is a research project aiming at this direction. In this paper, we describe the development of simulation application in SimuGrid by proposing three modes of simulation system(More)
BRAF mutation is one of the important driver oncogene in non-small-cell lung cancer (NSCLC). Data on Chinese patients with BRAF-mutant NSCLC are inadequate. Hence, we conducted this study to investigate the clinicopathologic features and outcomes of Chinese patients with NSCLC and BRAF mutations. We identified patients with BRAF-mutant NSCLC between January(More)
The epidermal growth factor receptor (EGFR) targeted therapy has been established as a routine strategy for treating non-small cell lung cancer (NSCLC). However, the gatekeeper mutation T790M in EGFR active site can confer generic resistance to tyrosine kinase inhibitors (TKIs), largely limiting the clinical applications of chemotherapeutic drugs in NSCLC.(More)
The objective of this investigation is to analyze the influence of trabecular microstructure modeling on the biomechanical distribution of the implant-bone interface. Two three-dimensional finite element mandible models, one with trabecular microstructure (a refined model) and one with macrostructure (a simplified model), were built. The values of(More)
An important preprocess in computer-aided orthodontics is to segment teeth from the dental models accurately, which should involve manual interactions as few as possible. But fully automatic partition of all teeth is not a trivial task, since teeth occur in different shapes and their arrangements vary substantially from one individual to another. The(More)