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

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Stereoscopic visualization of Scientific and Medical Content for Education: Seeing in 3D

Stereoscopic Visualization of Scientific and Medical Content...

引用

IEEE International conference on e-Science and Grid computing

作者： Albert William Indiana University School of Informatics IUPUI Indianapolis IN USA

The use of stereoscopic displays to educate students on the complex subjects of science and health holds great promise. Traditionally, students have not been easily able to visualize concepts using standard textbooks, and stereo displays fill a role that will allow these students a greater insight to the materials that often have gone misunderstood. Often, science is portrayed by artists who may not understand the science and thus misrepresent the subject matter, or by the scientist who is not capable of rendering images of a complex nature with the artist's technical ability. The technologies used to create and display stereoscopic content are becoming increasingly economically feasible and user friendly. The end result of this situation will be to permit a more fascinating, accurate, and dynamic learning environment that can be available to anyone interested in exploring science and health.

关键词： visualization Displays biomedical informatics Hardware Production Animation Pipelines Motion pictures Proteins biomedical imaging

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Virtual reality-enhanced ultrasound guidance for atrial ablation: In vitro epicardial study

引用

11th International conference on Medical Image computing and Computer-Assisted Intervention, MICCAI 2008

作者： Linte, Cristian A. Wiles, Andrew Moore, John Wedlake, Chris Peters, Terry M. Imaging Research Laboratories Robarts Research Institute London ON Canada Biomedical Engineering Graduate Program University of Western Ontario London ON Canada Department of Medical Biophysics University of Western Ontario London ON Canada

ISBN: (纸本)3540859896

In an effort to reduce morbidity of cardiac interventions, minimizing invasiveness inevitably leads to limited visual access to the surgical targets. To address these limitations, we provide the surgeons with a robust visualization environment that integrates interventional ultrasound imaging augmented with pre-operative anatomical models and virtual surgical instruments within a virtual reality environment. Here we present an in vitro study on a cardiac phantom that mimics an ablation therapy procedure, which allows us to assess the feasibility of our surgical system in comparison to traditional intra-operative ultrasound imaging. Following surgical target identification via an electro-anatomical model, the "ablation procedure" is performed blindly. A 2.8 mm RMS targeting error is achieved using our novel surgical system. This level of accuracy is adequate from both a clinical and engineering perspective, under the inherent procedure requirements and limitations of the system. © 2008 Springer Berlin Heidelberg.

关键词： Ablation

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A virtual imaging system for colour research

A virtual imaging system for colour research

引用

International conference on Image and Vision computing New Zealand, IVCNZ

作者： A.N. Chalmers L. Wang M.V. Ramos Electrical & Computer Engineering Manukau Institute of Technology Manukau New Zealand Institute for Biomedical Technologies Auckland University of Technology Auckland New Zealand

A visualization system has been constructed to provide an accurate representation of a group of surface colours under a range of different light sources. The impetus for this work has come from the burgeoning supply of new high-output LED (light-emitting diode) sources now entering the market. The system will be used to test the validity of the CIE (International Commission on Illumination) colour rendering index (CRI) for these and other sources. The system computes and displays each colour from a knowledge of the light-source spectrum and the spectral reflectance of each surface, and can simultaneously display the resultant colours from two different sources as well as computing the colour differences for the two sets of colours. Subjective tests are being undertaken to validate the computed results.

关键词： Light sources Computer displays Light emitting diodes Reflectivity Color Optical reflection System testing Lighting Rendering (computer graphics) biomedical imaging

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An interactive visualization tool and data model for experimental design in systems biology

An interactive visualization tool and data model for experim...

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Annual International conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

作者： Shray Kapoor Chang Feng Quo Alfred H. Merrill May D. Wang College of Computing Georgia Institute of Technology Atlanta GA USA Department of Biomedical Engineering Georgia Institute of Technology Atlanta GA USA School of Biology Georgia Institute of Technology Atlanta GA USA Department of Biomedical Engineering the School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta GA USA Hematology and Oncology Winship Cancer Institute Emory University Atlanta GA USA

Experimental design is important, but is often under-supported, in systems biology research. To improve experimental design, we extend the visualization of complex sphingolipid pathways to study biosynthetic origin in SphinGOMAP. We use the ganglio-series sphingolipid dataset as a test bed and the Java Universal Network / Graph Framework (JUNG) visualization toolkit. The result is an interactive visualization tool and data model for experimental design in lipid systems biology research. We improve the current SphinGOMAP in terms of interactive visualization by allowing (i) choice of four different network layouts, (ii) dynamic addition / deletion of on-screen molecules and (iii) mouse-over to reveal detailed molecule data. Future work will focus on integrating various lipid-relevant data systematically i.e. SphinGOMAP biosynthetic data, Lipid Bank molecular data (Japan) and Lipid MAPS metabolic pathway data (USA). We aim to build a comprehensive and interactive communication platform to improve experimental design for scientists globally in high-throughput lipid systems biology research.

关键词： Data visualization Lipidomics Layout Systems biology Tools Data models

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Lowering the Barriers to Cancer Imaging

Lowering the Barriers to Cancer Imaging

引用

IEEE International conference on e-Science and Grid computing

作者： M.S. Avila-Garcia A.E. Trefethen M. Brady F. Gleeson D. Goodman Oxford e-Research Centre University of Oxford UK Department of Engineering Science University of Oxford UK Radiology Nuffield Department of Surgery Churchill Hospital University of Oxford UK

There are various issues that limit the development and deployment of new software solutions in cancer image analysis research. In this paper we discuss some of these and propose a framework design based on cloud computing concepts, Microsoft technologies, existing middleware and imaging toolkits. Furthermore, we address some of these issues by introducing collaborative visual tools for visual input data and multi-user interactions.

关键词： Cancer Image color analysis Image segmentation biomedical imaging Computed tomography Image analysis Liver neoplasms Computer languages visualization Medical diagnostic imaging

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A volume visualization driver in Geant4 for radiotherapy simulation

A volume visualization driver in Geant4 for radiotherapy sim...

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IEEE Symposium on Nuclear Science (NSS/MIC)

作者： Akinori Kimura Takashi Sasaki Satoshi Tanaka Department of Electrical and Electronic Engineering Ashikaga Institute of Technology Ashikaga Tochigi Japan Computing Research Center High Energy Accelerator Research Organization (KEK) Tsukuba Ibaraki Japan Department of Media Technology Ritsumeikan University Kusatsu Shiga Japan

A volume visualization driver in Geant4 was developed in order to display a complex patient image and a calculated dose distribution in a radiotherapy simulation with an external volume visualizer. Monte Carlo simulation has been widely used for radiological simulation. In radiotherapy simulation, it applies to calculation of the dose distribution, optimization of the beam delivery system, and so on. Geant4 toolkit is utilized to build a simulator for that purpose. In that simulator, visualizer needs the volume rendering capability to display a complex volume data. However, there is no volume rendering capability in the visualization system in Geant4. The volume visualization driver extracts a patient data, calculated dose distributions, particle trajectories and geometrical information of beam delivery modules in the simulation, and then saves their information as a data file. With that data file, the external volume visualizer is able easily to display results of the simulation.

关键词： Data visualization Medical simulation Displays Physics Graphics biomedical imaging Computed tomography Detectors Geometry Nuclear and plasma sciences

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Classification, Dimensionality Reduction, and Maximally Discriminatory visualization of a Multicentre 1H-MRS Database of Brain Tumors

Classification, Dimensionality Reduction, and Maximally Disc...

引用

International conference on Machine Learning and Applications (ICMLA)

作者： Paulo J. G. Lisboa Enrique Romero Alfredo Vellido Margarida Julià-Sapé Carles Arús School of Computing and Mathematical Sciences Liverpool John Moores University Liverpool United Kingdom Llenguatges i Sistemes Informàtics Universitat Politècnica de Catalunya Barcelona Spain Grup d’ Aplicacions Biomèdiques de la RMN (GABRMN) Universitat Autònoma de Barcelona (UAB) Cerdanyola del Vallès Spain CIBER-BBN Cerdanyola del Vallès Spain

The combination of an Artificial Neural Network classifier, a feature selection process, and a novel linear dimensionality reduction technique that provides a data projection for visualization and which preserves completely the class discrimination achieved by the classifier, is applied in this study to the analysis of an international, multi-centre 1H-MRS database of brain tumors. This combination yields results that are both intuitively interpretable and very accurate. The method as a whole remains simple enough as to allow its easy integration in existing medical decision support systems.

关键词： visualization Visual databases Neoplasms Medical diagnostic imaging Decision support systems Tumors biomedical imaging Artificial neural networks Frequency Data analysis

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computing Minimal Deformations: Application to Construction of Statistical Shape Models

Computing Minimal Deformations: Application to Construction ...

引用

26th IEEE conference on Computer Vision and Pattern Recognition (CVPR 2008), vol.2

作者： Darko Zikic Michael Sass Hansen Ben Glocker Ali Khamene Rasmus Larsen Nassir Navab Computer Aided Medical Procedures (CAMP) Technische Universität München Germany Informatics and Mathematical Modeling (IMM) Technical University of Denmark Denmark Imaging and Visualization Department Siemens AG Corporate Research and Development Princeton USA

Nonlinear registration is mostly performed after initialization by a global, linear transformation (in this work, we focus on similarity transformations), computed by a linear registration method. For the further processing of the results, it is mostly assumed that this preregistration step completely removes the respective linear transformation. However, we show that in deformable settings, this is not the case. As a consequence, a significant linear component is still existent in the deformation computed by the nonlinear registration algorithm. For construction of statistical shape models (SSM) from deformations, this is an unwanted property: SSMs should not contain similarity transformations, since these do not capture information about shape. We propose a method which performs an a posteriori extraction of a similarity transformation from a given nonlinear deformation field, and we use the processed fields as input for SSM construction. For computation of minimal displacements, a closed-form solution minimizing the squared Euclidean norm of the displacement field subject to similarity parameters is used. Experiments on real inter-subject data and on a synthetic example show that the theoretically justified removal of the similarity component by the proposed method has a large influence on the shape model and significantly improves the results.

关键词： Computer applications Shape Deformable models Mathematical model visualization Data mining Application software biomedical imaging biomedical informatics Thyristors

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Pattern mining for routine behaviour discovery in pervasive healthcare environments

Pattern mining for routine behaviour discovery in pervasive ...

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IEEE EMBS International conference on Information Technology Applications in Biomedicine (ITAB)

作者： Raza Ali Mohamed ElHelw Louis Atallah Benny Lo Guang-Zhong Yang Department of Computing Imperial College London London UK

Pervasive sensing is set to transform the future of patient care by continuous and intelligent monitoring of patient well-being. In practice, the detection of patient activity patterns over different time resolutions can be a complicated procedure, entailing the utilisation of multi-tier software architectures and processing of large volumes of data. This paper describes a scalable, distributed software architecture that is suitable for managing continuous activity data streams generated from body sensor networks. A novel pattern mining algorithm is applied to pervasive sensing data to obtain a concise, variable-resolution representation of frequent activity patterns over time. The identification of such frequent patterns enables the observation of the inherent structure present in a patientpsilas daily activity for analyzing routine behaviour and its deviations.

关键词： Medical services Patient monitoring biomedical monitoring Software architecture Minimally invasive surgery Body sensor networks Pattern recognition Senior citizens Wearable sensors Data visualization

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Replica Prediction Guide Task Scheduling for a Highly Frequent Task-submitting Circumstance in Grid environment

Replica Prediction Guide Task Scheduling for a Highly Freque...

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第七届网格与协同计算国际会议(Seventh International conference on Grid and Cooperative computing GCC 2008)

作者： Xiangguo Yan Yu Kang Chongxun Zheng Jian Kang The Key Laboratory of Biomedical Information Engineering of Ministry of Education Xi'an Jiaotong Uni The Wireless Product R&D Center ZTE Corporation.Shanghai China

ISBN: (纸本)9781424432806;9780769534497

This paper aims at studying the task scheduling in a highly frequent task submitting circumstance in a specific grid environment. The grid is mainly comprised by PCs (personal computers) which in practice will not provide replica information to the grid replica catalogue because the frequent updating operation caused by task execution will consume lots of bandwidth and computing resources. Furthermore file replacement will occur if the storage element has insufficient storage space. Considering with these problems, the Replica Prediction Guide (RPG) task scheduling algorithm is introduced. By maintaining a Replica Prediction List (RPL), a Task Queue Wait Time Queue (TQWTQ) and the total size of working directory for each storage element without holding replica information, the grid scheduler can track the data sharing pattern between a task and replica content of a host, also the task wait time can be predicted by checking TQWTQ. More practically, the RPL can predict the replica contents of a machine even different file replacement strategies actually used on it. The simulation results show that the RPG algorithm has better performance than Queue Access Cost used in OptorSim and Storage Affinity algorithm when a set of tasks are submitted in high frequency.

关键词： component Scheduling grid computing distributed systems image visualization

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