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International Conference on Control, Automation and Systems ( ICCAS)

作者： Motohiro Tanaka Motoki Hara Yoshitaka Morito Taichi Sakamoto Kazuya Miyamori Shunji Moromugi Takakazu Ishimatsu Graduate School of Biomedical Sciences Nagasaki University Nagasaki Japan Graduate School of Science and Technology Nagasaki University Nagasaki Japan Department of Mechanical Systems Engineering Nagasaki University Nagasaki Japan

It is widely acknowledged that computer is powerful tool to improve the quality of life of the people with disability. One problem is how the user manipulates the computer using suitable input device designed for him or her. This paper proposes tow pointing devices based on vision for the people with disability as input devices. These devices detect the position of the marks attached on the users head. According to the head movements, computer cursor on the computer display is moved in two-dimensionally. A distinct advantage of these devices is that various strategies could be installed based on the situation of the users. The pointing device was applied to a drawing tool of the painting software for an patients successfully.

关键词： Head Communication system control Computer displays Image processing Control systems Power engineering computing Computer networks Home appliances Lips Mouth

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Towards a medical virtual reality environment for minimally invasive cardiac surgery

Towards a medical virtual reality environment for minimally ...

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4th International Workshop on Medical Imaging and Augmented Reality, MIAR 2008

作者： Peters, Terry M. Linte, Cristian A. Moore, John Bainbridge, Daniel Jones, Douglas L. Guiraudon, Gérard M. Imaging Research Laboratories Robarts Research Institute London ON Canada Biomedical Engineering Graduate Program University of Western Ontario London ON Canada Division of Anaesthesia University of Western Ontario London ON Canada Department of Physiology and Pharmacology University of Western Ontario London ON Canada Canadian Surgical Technologies and Advanced Robotics London ON Canada

ISBN: (纸本)3540799818

We have developed a visualization environment to assist surgeons with therapy delivery inside the beating heart, in absence of direct vision. This system employs virtual reality techniques to integrate pre-operative anatomical models, real-time intra-operative imaging, and models of magnetically-tracked surgical tools. Visualization is enhanced via 3D dynamic cardiac models constructed from high-resolution pre-operative MR or CT data and registered within the intra-operative imaging environment. In this paper, we report our experience with a feature-based registration technique to fuse the pre- and intra-operative data during an in vivo intracardiac procedure on a porcine subject. Good alignment of the pre- and intra-operative anatomy within the virtual reality environment is ensured through the registration of easily identifiable landmarks. We present our initial experience in translating this work into the operating room and employing this system to guide typical intracardiac interventions. Given its extensive capabilities in providing surgical guidance in the absence of direct vision, our virtual environment is an ideal candidate for performing off-pump intracardiac interventions. © 2008 Springer-Verlag Berlin Heidelberg.

关键词： Augmented reality

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Study of equilibrium sense improvement displaying visual information

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Key engineering Materials 2008年 381-382卷 369-372页

作者： Kim, G.B. Jeong, S.H. Chong, W.S. Kang, H.S. Kim, S.J. Kim, M.H. Hwang, J.W. Hong, C.U. Education Program for 21st Century Chonbuk National University Research Institute of Clinical Medicine Duckjin-Dong Jeonju Chonbuk 561-756 Korea Republic of Department of Computer Engineering Graduate School Chonbuk National University Duckjin-Dong Jeonju Chonbuk 561-756 Korea Republic of Department of Biomedical Engineering Graduate School Chonbuk National University Duckjin-Dong Jeonju Chonbuk 561-756 Korea Republic of Department of Pharmacology College of Veterinary Medicine Chonbuk National University Duckjin-Dong Jeonju Chonbuk 561-756 Korea Republic of Department of Bio and Applied Chemistry Iksan National College Ma-Dong Iksan Chonbuk 570-752 Korea Republic of Department of Thoracic and Cardiovascular Surgery Chonbuk National University Medical Schools Duckjin-Dong Jeonju Chonbuk 561-756 Korea Republic of Collage of Engineering Chonbuk National University Duckjin-Dong Jeonju Chonbuk 561-756 Korea Republic of Division of Bionics and Bioinformatics Collage of Engineering Chonbuk National University Duckjin-Dong Jeonju Chonbuk 561-756 Korea Republic of

The effectiveness of the visual feedback to improve ability with the sense and muscular strength of human in our bicycle system was quantitatively verified in our study. Experiments were performed to find the factors related to the training of equilibrium sense. The subjects consisted of young and the aged and the group of young people was compared against the group of the aged. We investigated three different training modes, non-visual feedback (NVF), visual feedback of the weight (VFW), and visual feedback of the center of pressure (VFC) and measured the riding time and speed, the weight shift, and the center of pressure (COP) for twenties and seventies. The results showed that the running capability of the young and the aged became much better after repeated training. In addition, it was found out that the ability to control postural balance and the capability of equilibrium sense were improved with the presentation of the visual feedback information. These results will be effective in the diagnosis of equilibrium sense and vestibular function with the aged.

关键词： Feedback

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mechanically interlocked chitosan-PLGA multilayer composite matrices

Mechanically interlocked chitosan-PLGA multilayer composite ...

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8th World Biomaterials Congress 2008, WBC 2008

作者： Lawrence, Benjamin J. Spontarelli, Rebecca F. Lin, Hsueh-Kung Madihally, Sundar School of Chemical Engineering Oklahoma State University Stillwater OK United States Graduate Program in Biomedical Sciences University of Oklahoma Health Sciences Center Oklahoma City OK United States Department of Urology University of Oklahoma Health Sciences Center Oklahoma City OK United States Department of Veterans Affairs Medical Center Oklahoma City OK United States

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Physiological effects of RF exposure on hypersensitive people by a cell phone

Physiological effects of RF exposure on hypersensitive peopl...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： Deok Won Kim Ju Hyung Lee Hyo Chul Ji Soo Chan Kim Ki Chang Nam Eun Jong Cha Department of Medical Engineering College of Medicine Yonsei University Seoul South Korea Graduate Program in Biomedical Engineering Yonsei University Seoul South Korea Graduate School of Bio &Information Technology Hankyong National University Anseong South Korea Senior Researcher Korea Electrotechnology Research Institute Ansan South Korea Department of Biomedical Engineering Chungbuk National University Cheongju South Korea

Persons with electromagnetic hypersensitivity (EHS) complain of subjective symptoms such as headaches, insomnia, memory loss etc. resulting from radio frequency (RF) radiation by cellular phones. There have been various EHS provocation studies on heart rate, blood pressure, and subjective symptoms using GSM phones. However, there are few provocation studies on case-control study investigating simultaneously physiological parameters from CDMA phones. In this study, two volunteer groups of 18 self-declared EHS and 19 controls were exposed to both sham and real RF exposures by a CDMA cellular phone for half an hour each. We investigated the physiological parameters such as heart rates, respiration rates, and hear rate variability (HRV). In conclusion, the RF exposure by a CDMA cellular phone did not have any effects on the physiological parameters for both groups.

关键词： Cellular phones Radio frequency Physiology Multiaccess communication Heart rate variability Temperature measurement

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Editorial

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Journal of Building Physics 2008年第2期32卷 95 - 100页

作者： Ardeshir Mahdavi Marc Olivier Abadie Department of Building Physics and Building Ecology Vienna University of Technology Karlsplatz 13 A-1040 Vienna Austria Mechanical Engineering Graduate Program Pontifical Catholic University of Paraná - PUCPR/CCET Curitiba PR 80215-901 Brazil

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Surgical accuracy under virtual reality-enhanced ultrasound guidance: An in vitro epicardial dynamic study

Surgical accuracy under virtual reality-enhanced ultrasound ...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

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

ISBN: (纸本)9781424418145

In the context of our ongoing objective to reduce morbidity associated with cardiac interventions, minimizing invasiveness has inevitably led to more limited visual access to the target tissues. To ameliorate these challenges, we provide the surgeons with a complex visualization environment that integrates interventional ultrasound imaging augmented with pre-operative anatomical models and virtual surgical instruments within a virtual reality environment. In this paper we present an in vitro study on a cardiac phantom aimed at assessing the feasibility and targeting accuracy of our surgical system in comparison to traditional ultrasound imaging for intra-operative surgical guidance. The “therapy delivery” was modeled in the context of a blinded procedure, mimicking a closed-chest intervention. Four users navigated a tracked pointer to a target, under guidance provide by either US imaging or virtual reality-enhanced ultrasound. A 2.8 mm RMS targeting error was achieved using our novel surgical system, which is adequate from both a clinical and engineering perspective, under the inherent procedure requirements and limitations of the system.

关键词： Minimally-invasive cardiac interventions Off-pump cardiac surgery Image guidance Virtual reality environment Beating heart phantom virtual reality environment Interventional Ultrasonography Virtual Surgery Surgical Instruments Ultrasonic guidance procedure Guidance Invasiveness

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Preliminary study on physiological changes of hemorrhagic shock in rats

Preliminary study on physiological changes of hemorrhagic sh...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： Ju Hyung Lee Soo Chan Kim Tak Hyung Lee Sang Won Chung Hyung Wook No Deok Won Kim Graduate Program in Biomedical Engineering Yonsei University Seoul South Korea Hankyong National University Anseong South Korea Department of Emergency Medicine College of Medicine Kwandong University Koyang South Korea Department of Medical Engineering College of Medicine Yonsei University Seoul South Korea

Hemorrhagic shock is a common cause of death in emergency rooms. The objective evaluation of hemorrhagic shock is very important for early diagnosis and treatment. The purpose of this study is to understand its mechanism by analyzing the changes of bio-signals in hemorrhagic shock using controlled hemorrhage of Sprague-Dawley rats. We constructed an integrated system to be able to control bleeding and to simultaneously measure bio-signals such as ECG, blood pressure, temperature, and respiration. In order to verify the system, we measured the bio-signals mentioned above while hemorrhagic shock was induced by withdrawing blood (2.5ml/100g/15min) from a femoral vein for 10 rats.

关键词： Hemorrhaging Electric shock Rats Temperature measurement Pressure measurement Blood pressure Electrocardiography

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Evaluation criteria for musculoskeletal and craniofacial tissue engineering constructs: A conference report

Evaluation criteria for musculoskeletal and craniofacial tis...

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作者： Butler, David L. Lewis, Jack L. Frank, Cyril B. Banes, Albert J. Caplan, Arnold I. De Deyne, Patrick G. Dowling, Mary-Ann Fleming, Braden C. Glowacki, Julie Guldberg, Robert E. Johnstone, Brian Kaplan, David L. Levenston, Marc E. Lotz, Jeffrey C. Ed, Yiling Lu Lumelsky, Nadya Mao, Jeremy J. Mauck, Robert L. McDevitt, Cahir A. Mejia, Lito C. Murray, Martha Ratcliffe, Anthony Spindler, Kurt P. Tashman, Scott Wagner, Christopher T. Weisberg, Elijah M. Williams, Chrysanthi Zhang, Renwen Department of Biomedical Engineering University of Cincinnati 840 Engineering Research Center 2901 Woodside Drive Cincinnati OH 45221-0048 United States Department of Biomedical Engineering University of Cincinnati Cincinnati OH United States Department of Orthopaedic Surgery University of Minnesota Minneapolis MN United States Division of Orthopaedic Surgery Department of Surgery University of Calgary Calgary AB Canada Joint Department of Biomedical Engineering University of North Carolina Raleigh NC United States Flexcell International Corp. Department of Biology Case Western Reserve University Cleveland OH United States Preclinical Biology Johnson and Johnson Regenerative Therapeutics Raynham MA United States Smith and Nephew Research Centre York United Kingdom Department of Orthopaedic Surgery Brown University Providence RI United States Departments of Orthopedic Surgery and Oral and Maxillofacial Surgery Harvard Schools of Medicine and Dental Medicine Boston MA United States George W. Woodruff School of Mechanical Engineering Georgia Institute of Technology Atlanta GA United States Department of Orthopaedics and Rehabilitation Oregon Health and Science University Portland OR United States Department of Biomedical Engineering Tufts University Medford MA United States Department of Mechanical Engineering Stanford University Stanford CA United States Department of Orthopaedic Surgery University of California San Francisco San Francisco CA United States Johnson and Johnson Regenerative Therapeutics Raynham MA United States Tissue Engineering and Dental and Craniofacial Regenerative Medicine Research Program National Institute of Dental and Craniofacial Research Bethesda MD United States Columbia University New York NY United States Department of Orthopaedic Surgery University of Pennsylvania Philadelphia PA United States Department of Biomedical Engineering Cleveland Clinic Foundation Cleveland OH United States Bose Corporation Ed

Over the past 20 years, tissue engineering (TE) has evolved into a thriving research and commercial development field. However, applying TE strategies to musculoskeletal (MSK) and craniofacial tissues has been particularly challenging since these tissues must also transmit loads during activities of daily living. To address this need, organizers invited a small group of bioengineers, surgeons, biologists, and material scientists from academia, industry, and government to participate in a 21/2-day conference to develop general and tissue-specific criteria for evaluating new concepts and tissue-engineered constructs, including threshold values of success. Participants were assigned to four breakout groups representing commonly injured tissues, including tendon and ligament, articular cartilage, meniscus and temporomandibular joint, and bone and intervertebral disc. Working in multidisciplinary teams, participants first carefully defined one or two important unmet clinical needs for each tissue type, including current standards of care and the potential impact of TE solutions. The groups then sought to identify important parameters for evaluating repair outcomes in preclinical studies and to specify minimally acceptable values for these parameters. The importance of in vitro TE studies was then discussed in the context of these preclinical studies. Where data were not currently available from clinical, preclinical, or culture studies, the groups sought to identify important areas of preclinical research needed to speed the development process. This report summarizes the findings of the conference. © Copyright 2008, Mary Ann Liebert, Inc.

关键词： Tissue engineering

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Discourse-based communities of practice: Developing graduate students' abilities to communicate their research across disparate disciplines and experience levels

Discourse-based communities of practice: Developing graduate...

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2008 ASEE Annual Conference and Exposition

作者： Anthony, Linda Palius, Marjory Maher, Carolyn Moghe, Prabhas Rutgers The State University of New Jersey NSF IGERT Program on Integratively Engineered Biointerfaces Rutgers State University of New Jersey Rutgers University 599 Taylor Road Piscataway NJ 08854 United States Robert B. Davis Institute for Learning Graduate School of Education of Rutgers State University of New Jersey Rutgers University 303 George Street New Brunswick NJ 08901 United States Department of Mathematics Education Rutgers University 10 Seminary Place New Brunswick NJ 08901 United States Department of Biomedical Engineering and Chemical and Biochemical Engineering Rutgers The State University of New Jersey Rutgers-NSF IGERT Program on Integratively Engineered Biointerfaces

Ours is a research endeavor with two distinct but related foci: We are developing and studying a discourse based community of practice (the IRIF) to address the particular learning and dissemination of challenges of doctoral graduate students in STEM fields. We also are developing a research tool and methodology (GROD) to enable more effective analyses of the rich data sets that such learning communities generate. The IRIF provides a model for convening a semi-structured discourse-based community of practice in which graduate students can develop their skills for disseminating their own research while learning from the research presentations made by others. For researchers interested in studying how such learning transpires, the IRIF or some adaptation of it may provide a useful context for research not only among graduate students but also for undergraduates and other levels as well. The GROD may also offer advantages to other education researchers as a methodological tool for discourse analysis, because variables other than disciplinary background - e.g. level of expertise, time in program, first language, etc. - could be plotted along the attribute axis. Thus, the methodology could be generalized and adapted for use in tracing the flow of ideas in a classroom setting or interactions in a group discussion. Both the IRIF model and the GROD methodology may be particularly relevant for those working in increasingly cross-disciplinary environments, such as those that IGERT programs and other educational initiatives are designed to promote. © American Society for engineering Education, 2008.

关键词： Students

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