Jingsi Zhang

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In this paper, we present a novel approach for real-time simulation of deformable soft tissue. When using Mass-Spring or Finite Element Method to simulate the global deformation of soft tissue dynamically, we'll meet the difficulty that the size of the 3D problem (the number of elements in the Mass-Spring or FEM mesh) is much larger than the 2D issue. So we(More)
ETHNOPHARMACOLOGICAL RELEVANCE Tongxinluo (TXL), a widely used traditional Chinese medicine, has been proved multiple therapeutic effects in cerebral ischemic infraction. The purpose of this study was to investigate the protective effects of TXL on the brain edema and post-ischemic inflammatory response. MATERIALS AND METHODS Middle cerebral artery(More)
In this paper, MM-Model is presented for real-time simulation of 3D deformable objects on both global level and local region. This model consists of a deformable centerline and dynamic surface reconstruction mechanism based on Mass-Spring and Medial-Representation respectively. When a relatively small force is applied on the object the model works in the(More)
In this paper, a novel approach to perform real-time simulation of the deformation of anatomical organs is proposed for virtual surgery study. The method, which is both physics and interactivity motivated, is composed of two algorithms: boundary element method and meshless shape matching. We employ boundary element method to simulate a precise global(More)
This paper presents a construction of a computer assisted system in dental implantology. Preoperative planning and surgical navigation are two main sub-systems in our proposed system. In the preoperative planning subsystem, we provide different kinds of views to the surgeons based on CT data scanned for a specific patient. And the surgical navigation(More)
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To achieve the real-time requirement of realistic deformable modelling, it is necessary to use the acceleration techniques such as GPU computing for FEM and employ the feasible hybrid structures in a virtual surgery simulation system. In this paper, we present a linear or nonlinear deformable model of soft tissue. In addition to the efficient meshing and(More)
In this work, our aim is to model realistic cutting and suture in real-time. For realistic rendering, the response of deformable soft tissue during the cutting and suture process should be carefully analyzed and simulated. Therefore, different behaviors of tissue resistance need to be simulated in the different phases of tool-tissue interaction. In the(More)
In this letter, a frequency-scanning planar antenna composed of a phase gradient metasurface and feed structure is proposed. The phase gradient metasurface can couple the wave from the feed into a spatial radiated wave whose propagation direction is manipulated by frequency as long as the feed provides a similar electromagnetic field to that of spoof(More)
Herbal medicines have long been used to treat Parkinson’s disease (PD). To systematically analyze the anti-parkinsonian activity of echinacoside (ECH) in a neurotoxic model of PD and provide a future basis for basic and clinical investigations, male C57BL/6 mice were randomized into blank control, PD model and ECH-administration groups. ECH significantly(More)