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检索条件"任意字段=Conference on Visualization in Biomedical Computing"

共 894 条记录，以下是471-480 订阅

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A High Quality Reflectance Model in Medical Image visualization

A High Quality Reflectance Model in Medical Image Visualizat...

引用

4th International conference on Bioinformatics and biomedical Engineering (iCBBE)

作者： Zou, Yunpeng Zhang, Jun Han, Xiaoming Kang, Yan Northeastern Univ Sch BMIE Shenyang Peoples R China Neusoft Med Syst Co Ltd Med IT Div Houston TX 77014 USA

ISBN: (纸本)9781424447138

The medical image visualization can help the doctor easy to diagnose, and the better quality can help doctor much more. The reflectance model is the key factor to make the quality better. Be enslaved to the computing power of CPU and GPU, some complicated reflectance models have not been used in medical visualization, the simple reflectance model-Phong model been used prevalently. With the growing computing power of GPU, this paper gives an improved reflectance model based on the Cook-Torrance reflectance model, which can render good quality in medical image visualization, and the velocity is 4 to 6 fps, that meet the real time rendering requirement. This reflectance model is a practical model for medical image visualization.

关键词： medical image visualization reflactance model Phong Cook-Torrance quanlity

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The Study and Implementation of Dose Calculation Method in OUR-Body Gamma Knife

The Study and Implementation of Dose Calculation Method in O...

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2010 3rd International conference on biomedical Engineering and Informatics (BMEI 2010)

作者： Chen, Hongchu Wang, Xiaoming Wu, Junsheng Luo, Shuyan NW Polytech Univ Sch Software & Microelect Xian 710072 Peoples R China

ISBN: (纸本)9781424464968

Radiation dose in the importance of radiation therapy is well known, with the advancement and development of technology, Radiation therapy in cancer treatment plays an important role. The current radiation treatment planning system using empirical or semi experienced conventional dose algorithm, the calculated dose distribution is not precise enough. Based on OUR-Body Gamma Knife radiation treatment planning software system, this article proposes dose calculation optimization method to meet the computing requirements of the premise and reduce dose points which need to calculate as much as possible, to improve the calculation speed. According to the experimental results demonstrate the feasibility of the optimization algorithm, and finally complete visualization of dose distribution.

关键词： Gamma Knife treatment planning system dose calculation dose distribution visualization

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On the Use of Augmented Reality Techniques in Learning and Interpretation of Cardiologic Data

On the Use of Augmented Reality Techniques in Learning and I...

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32nd Annual International conference of the IEEE Engineering-in-Medicine-and-Biology-Society (EMBC 10)

作者： Lamounier, Edgard, Jr. Bucioli, Arthur Cardoso, Alexandre Andrade, Adriano Soares, Alcimar Fed Univ Uberlandia Brazil Virtual & Augmented Real Res Grp Fac Elect Engn Uberlandia MG Brazil Minas Gerais State Univ Fac Comp Engn Ituiutaba Brazil Univ Fed Uberlandia Fac Elect Engn Biomed Engn Lab Uberlandia MG Brazil

ISBN: (纸本)9781424441242

Augmented Reality is a technology which provides people with more intuitive ways of interaction and visualization, close to those in real world. The amount of applications using Augmented Reality is growing every day, and results can be already seen in several fields such as Education, Training, Entertainment and Medicine. The system proposed in this article intends to provide a friendly and intuitive interface based on Augmented Reality for heart beating evaluation and visualization. Cardiologic data is loaded from several distinct sources: simple standards of heart beating frequencies (for example situations like running or sleeping), files of heart beating signals, scanned electrocardiographs and real time data acquisition of patient's heart beating. All this data is processed to produce visualization within Augmented Reality environments. The results obtained in this research have shown that the developed system is able to simplify the understanding of concepts about heart beating and its functioning. Furthermore, the system can help health professionals in the task of retrieving, processing and converting data from all the sources handled by the system, with the support of an edition and visualization mode.

关键词： augmented reality augmented reality techniques biomedical measurement cardiologic data interpretation cardiologic data learning data visualisation data visualization electrocardiographs electrocardiography heart beat evaluation heart beat frequencies heart beat signals heart beat visualization medical computing patient heart beat real time data acquisition

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RETRACTED ARTICLE: Pressure mapping as a complement in 3D pain drawings in the back-pain assessment process: A proposed method

RETRACTED ARTICLE: Pressure mapping as a complement in 3D pa...

引用

4th International conference on Bioinformatics and biomedical Engineering, iCBBE 2010

作者： Spyridonis, Fotios Ghinea, Gheorghita Department of Information Systems and Computing Brunei University Uxbridge United Kingdom

ISBN: (纸本)9781424447138

Over the years, an increasing number of the adult population suffers from some form of back pain during their lifetime, something that consecutively has a very important impact on a country's health, as well as economic systems. Traditional methods of diagnosing and treating such problems normally involve the collection and visualization of such medical information on a paper and a 2D representation of the human body, which have usually limited abilities in accurately recording and representing pain, making them in that way difficult and time consuming for both patients and doctors to use. In addition, the aforementioned methods are commonly considered to be subjective in nature, something that reduces their ability to be constituted as sufficient in determining whether someone suffers from pain or not. As a result, although in a previous work of ours [5] we have provided a solution to the visualization of pain issues, in this work we propose a prototype solution that attempts to address the aforementioned limitation of pain subjectivity by making use of the upcoming technique of pressure mapping. © 2010 IEEE.

关键词： Three dimensional computer graphics

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Study on cerebral vascular extraction and three-dimentional reconstruction based on MRI

Study on cerebral vascular extraction and three-dimentional ...

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2010 1st IEEE International conference on Progress in Informatics and computing, PIC 2010

作者： Gu, Fei Tao, Ling Department of Biomedical Engineering Nanjing University of Aeronautics and Astronautics NUAA Nanjing China

ISBN: (纸本)9781424467860

Information extraction and three-dimensional reconstruction of blood vessel are keystones in visualization of medical images. Firstly, an improved Sobel algorithm combined with fuzzy theory is presented, which is used to extract the cerebral information of serial images and can solve the contradiction between preservation of detail information and high de-noising ability effectively. Then, an improved ray casting volume rendering algorithm based on fusion segmentations is used to improve the rendering speed with a better rendering quality. The experiments show that the presented new method can preserve more complete blood vessel 3-D information and obtain good de-noising effect. This new method can produce better rendering quality and speeds up the volume rendering. ©2010 IEEE.

关键词： Blood vessels

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Proceedings - 6th IEEE International conference on e-Science Workshops, e-ScienceW 2010

Proceedings - 6th IEEE International Conference on e-Science...

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6th IEEE International conference on e-Science Workshops, e-ScienceW 2010

ISBN: (纸本)9780769542959

The proceedings contain 25 papers. The topics discussed include: the application of cloud computing to astronomy: a study of cost and performance;federating access to small-aperture telescopes;application of the OpenCL API for implementation of the NIPALS algorithm for principal component analysis of large data sets;haemodynamic effect of coronary angulations on subsequent development of coronary artery disease: a preliminary study;extending the data model for data-centric metagenomics analysis using scientific workflows in CAMERA;a patch model for pandemic influenza simulation in Korea;a data management framework for distributed biomedical research environments;evaluation of visualization approaches in a biomedical grid environment;gene expression classification with a novel coevolutionary based learning classifier system on public clouds;and reverse engineering Europe's PSI re-use rules - towards an integrated conceptual framework for PSI re-use.

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Locally linear embedding for the construction of the purkinje system

Locally linear embedding for the construction of the purkinj...

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2010 International conference on biomedical Engineering and Computer Science, ICBECS 2010

作者： Li, Jie Wang, Kuanquan Zuo, Wangmeng Yuan, Yongfeng Bio-computing Research Center School of Computer Science and Technoloy Harbin Institute of Technology Harbin China

ISBN: (纸本)9781424453153

Locally linear embedding (LLE), recently proposed unsupervised procedure for mapping high-dimensional data nonlinearly to a lower-dimensional space, is shown to yield remarkable good results in exploratory analysis and visualization. LLE is able to learn the global structure of nonlinear manifolds, and it maps its inputs into a single global coordinate system of lower dimensionality, which takes good advantage of remaining points close to each other in the computed low-dimensional space when they are close to each other in the high-dimensional space. However, the application to the closed geometry is consequently limited. The purkinje system is a very important conduction system in the endocardial surface of the ventricle that is a semi-closed organ. Traditional construction of the purkinje system is mostly relevant to the fractal tree or something similar, which is based of supposed theory and is an approximation to the actuality. In this paper, a novel method for the construction of the purkinje system in the canine left ventricle by applying LLE algorithm is proposed. The results show that the construction of the purkinje system approaches the one in real structure of the left ventricle better than ever reconstructed. ©2010 IEEE.

关键词： Clustering algorithms

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The collaboratory for structural nanobiology

The collaboratory for structural nanobiology

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作者： Cachau, R.E. Gonzalez-Ibanez, A.M. Gonzalez-Nilo, F.D. Advanced Biomedical Computing Center Information Systems Program SAIC-Frederick National Cancer Institute Frederick MD United States Center for Bioinformatics and Molecular Simulations Universidad de Talca 2 Norte 685 Talca Chile

ISBN: (纸本)9781439834152

Nanobiotechnology deal with problems related to the design, creation and characterization of materials, devices, and systems at the nanometer (1 to 100 nanometers) scale for their application in biomedical devices. The unusual properties of nano scale devices are exploited in biomedical applications in drug delivery, imaging and the treatment of illness at the cellular level. Here we present the implementation of a set of information technology tools to help characterize and design nanobiodevices at the molecular level. The Collaboratory for Structural Nanobiology (CSN) is a collection of IT services designed to satisfy the constraints imposed by the molecular characterization of nanobioparticles. The services implemented provide access to a system of databases containing downloadable structure and data files, related research data, and resources for visualization including sample data for several typical examples such as dendrimers, buckyballs, nanotubes and metallic particles.

关键词： Medical applications

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visualization and language processing for supporting analysis across the biomedical literature

Visualization and language processing for supporting analysi...

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14th International conference on Knowledge-Based and Intelligent Information and Engineering Systems, KES 2010

作者： Görg, Carsten Tipney, Hannah Verspoor, Karin Baumgartner Jr., William A. Cohen, K. Bretonnel Stasko, John Hunter, Lawrence E. School of Interactive Computing GVU Center Georgia Institute of Technology Atlanta GA 30332 United States Center for Computational Pharmacology University of Colorado Denver School of Medicine Aurora CO 80045 United States

ISBN: (纸本)3642153836

Finding relevant publications in the large and rapidly growing body of biomedical literature is challenging. Search queries on PubMed often return thousands of publications and it can be a tedious task to filter out irrelevant publications and choose a manageable set to read. We have developed a visual analytics system, named Bio-Jigsaw, which acts like a visual index on a document collection and supports biologists in investigating and understanding connections between biological entities. We apply natural language processing techniques to identify biological entities such as genes and pathways and visualize connections among them via multiple representations. Connections are based on co-occurrence in abstracts and also are drawn from ontologies or annotations in digital libraries. We demonstrate how Bio-Jigsaw can be used to analyze a PubMed search query on a gene related to breast cancer resulting in over 1500 primary papers. © Springer-Verlag 2010.

关键词： Genes

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A High Quality Reflectance Model in Medical Image visualization

A High Quality Reflectance Model in Medical Image Visualizat...

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The 4th International conference on Bioinformatics and biomedical Engineering(第四届IEEE生物信息与生物医学工程国际会议 iCBBE 2010)

作者： Yunpeng Zou Jun Zhang Xiaoming Han Yan Kang School of BMIE Northeastern University Shenyang China Medical IT Division Neusoft Medical Systems Co. Ltd. School of BMIE Northeastern University Shenyang Chian

The medical image visualization can help the doctoreasy to diagnose, and the better quality can help doctor muchmore. The reflectance model is the key factor to make the qualitybetter. Be enslaved to the computing power of CPU and GPU,some complicated reflectance models have not been used inmedical visualization, the simple reflectance model-Phongmodel been used prevalently. With the growing computing powerof GPU, this paper gives an improved reflectance model based on the Cook-Torrance reflectance model, which can render goodquality in medical image visualization, and the velocity is 4 to 6fps, that meet the real time rendering requirement. Thisreflectance model is a practical model for medical imagevisualization.

关键词： Reflectivity biomedical imaging Medical diagnostic imaging Data visualization Rough surfaces Surface roughness Rendering (computer graphics) Light sources Computed tomography Magnetic resonance imaging

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