Blood flow

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Blood flow is the continuous running of blood in the cardiovascular system. (Wikipedia.org)






Conferences related to Blood flow

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2019 41st Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)

The conference program will consist of plenary lectures, symposia, workshops andinvitedsessions of the latest significant findings and developments in all the major fields ofbiomedical engineering.Submitted papers will be peer reviewed. Accepted high quality paperswill be presented in oral and postersessions, will appear in the Conference Proceedings and willbe indexed in PubMed/MEDLINE & IEEE Xplore


2019 IEEE 16th International Symposium on Biomedical Imaging (ISBI)

The IEEE International Symposium on Biomedical Imaging (ISBI) is the premier forum for the presentation of technological advances in theoretical and applied biomedical imaging.ISBI 2019 will be the 16th meeting in this series. The previous meetings have played a leading role in facilitating interaction between researchers in medical and biological imaging. The 2019 meeting will continue this tradition of fostering cross fertilization among different imaging communities and contributing to an integrative approach to biomedical imaging across all scales of observation.


2019 IEEE International Ultrasonics Symposium (IUS)

The conference covers all aspects of the technology associated with ultrasound generation and detection and their applications.


2019 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)

This conference is the annual premier meeting on the use of instrumentation in the Nuclear and Medical fields. The meeting has a very long history of providing an exciting venue for scientists to present their latest advances, exchange ideas, renew existing collaboration and form new ones. The NSS portion of the conference is an ideal forum for scientists and engineers in the field of Nuclear Science, radiation instrumentation, software engineering and data acquisition. The MIC is one of the most informative venues on the state-of-the art use of physics, engineering, and mathematics in Nuclear Medicine and related imaging modalities, such as CT and increasingly so MRI, through the development of hybrid devices


2019 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)

robotics, intelligent systems, automation, mechatronics, micro/nano technologies, AI,


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Periodicals related to Blood flow

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Biomedical Circuits and Systems, IEEE Transactions on

The Transactions on Biomedical Circuits and Systems addresses areas at the crossroads of Circuits and Systems and Life Sciences. The main emphasis is on microelectronic issues in a wide range of applications found in life sciences, physical sciences and engineering. The primary goal of the journal is to bridge the unique scientific and technical activities of the Circuits and Systems ...


Biomedical Engineering, IEEE Transactions on

Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.


Control Systems Technology, IEEE Transactions on

Serves as a compendium for papers on the technological advances in control engineering and as an archival publication which will bridge the gap between theory and practice. Papers will highlight the latest knowledge, exploratory developments, and practical applications in all aspects of the technology needed to implement control systems from analysis and design through simulation and hardware.


Electron Devices, IEEE Transactions on

Publishes original and significant contributions relating to the theory, design, performance and reliability of electron devices, including optoelectronics devices, nanoscale devices, solid-state devices, integrated electronic devices, energy sources, power devices, displays, sensors, electro-mechanical devices, quantum devices and electron tubes.


Engineering in Medicine and Biology Magazine, IEEE

Both general and technical articles on current technologies and methods used in biomedical and clinical engineering; societal implications of medical technologies; current news items; book reviews; patent descriptions; and correspondence. Special interest departments, students, law, clinical engineering, ethics, new products, society news, historical features and government.


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Most published Xplore authors for Blood flow

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Xplore Articles related to Blood flow

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IEE Colloquium on 'Medical Flow Imaging and Measurement' (Digest No.26)

IEE Colloquium on Medical Flow Imaging and Measurement, 1989

None


In vivo evaluation of a new ultrasound contrast agent

1994 Proceedings of IEEE Ultrasonics Symposium, 1994

An ultrasound contrast agent (EchoGen; Sonus Pharmaceuticals, Bothell, WA) was evaluated in vivo. The agent changes at body temperature from non-echogenic submicron liquid droplets to echogenic gas microbubbles (1-2 μm*) capable of traversing the pulmonary and capillary circulations. IV injections were given to 5 woodchucks, 4 dogs and 12 rabbits (dose: 0.05-0.8 ml/kg). Color Doppler, color amplitude and B-mode images ...


Mathematical modelling of the human cardiovascular system during an exercise test of the lower limbs and the recuperation phase

Proceedings of 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 1996

The primary role of the cardiovascular system is to deliver a required amount of oxygen to various organs. These needs vary with time and depend on the vascular site. To maintain a required diffusion level of oxygen in the capillary networks, the cardiovascular system is controlled by regulation processes that maintain pressure and blood flow to the required physiological levels. ...


Processing Near Infrared Spectroscopy Signals Using Canonical Correlation Analysis

2006 IEEE 14th Signal Processing and Communications Applications, 2006

Functional near infrared spectroscopy signals (fNIRS) are measured by a number of LED-detector pairs. Estimation of event related responses from these signals needs multivariate analysis methods. This study concentrates on a particular multivariate method, namely the canonical correlation analysis and investigates its use for eliminating trend and noise effects from fNIRS signals and estimating event related haemodynamic response. Proposed methods ...


Computer model of cardiac diastolic dynamics

Proceedings Computers in Cardiology, 1992

A dynamic model of diastolic pressure (DP/dt) was derived from basic biophysical principles for use in a systems analysis of circulatory blood flow. In the model, DP/dt is considered to be biphasic in nature and of the general mathematical form DP/dt f(R, Q) where R (ventricular relaxation rate) controls the isovolemic relaxation phase and Q (flow into the ventricle) determines ...


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Educational Resources on Blood flow

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IEEE.tv Videos

IMS 2012 Microapps - Improve Microwave Circuit Design Flow Through Passive Model Yield and Sensitivity Analysis
Micro-Apps 2013: Integrated Electro-Thermal Design of a SiGe PA
MicroApps: A Streamlined Design Flow Featuring AWR Microwave Offce and Ansys HFSS (AWR)
MicroApps: Radar Design Flow with NI-AWR Integrated Framework (National Instruments)
PA Design: RF Boot Camp
Part Two: Interview with John Tisdale—IEEE VIC Summit 2018
APEC Speaker Highlights - Doug Hopkins, University of Buffalo, Power Electronics/Smart-Grid
MicroApps: Making the Transition from AWR to Cadence Tools - A More Seamless & Effcient Flow for Mutual IC & PCB Customers (AWR)
IEEE Themes - Efficient networking services underpin social networks
2015 IEEE Honors: IEEE Spectrum Technology in the Service of Society Award
Part 1: Interview with John Tisdale—IEEE VIC Summit 2018
The Josephson Effect: The Observations of Josephson's Effects
26 Years of Risk Management Standardisation - Kevin Knight - Closing Ceremony: Sections Congress 2017
From THz imaging to millimeter-wave stimulation of neurons: Is there a killer application for high frequency RF in the medical community? (RFIC 2015 Keynote)
IEEE 125th Anniversary Media Event: Cancer Prediction
2013 IEEE Medal in Power Engineering
IEEE Magnetics Distinguished Lecture - Yoshichika Otani
2015 IEEE Honors: IEEE Medal for Innovations in Healthcare Technology - Takuo Aoyagi
Safety Synergies and Engineering Opportunities Complex Systems in Life Sciences
HKN Member Hermann W. Dommel Receives an Award at the 2014 EAB Award Ceremony

IEEE-USA E-Books

  • IEE Colloquium on 'Medical Flow Imaging and Measurement' (Digest No.26)

    None

  • In vivo evaluation of a new ultrasound contrast agent

    An ultrasound contrast agent (EchoGen; Sonus Pharmaceuticals, Bothell, WA) was evaluated in vivo. The agent changes at body temperature from non-echogenic submicron liquid droplets to echogenic gas microbubbles (1-2 μm*) capable of traversing the pulmonary and capillary circulations. IV injections were given to 5 woodchucks, 4 dogs and 12 rabbits (dose: 0.05-0.8 ml/kg). Color Doppler, color amplitude and B-mode images were acquired from kidneys and vessels. A segmental branch of the renal artery was ligated providing a model of ischemia. Increased flow signal intensities were observed for 2-3 minutes. Normal vessels and the area of ischemia were visualized using both color modes. An in vivo dose response curve was calculated. The curve was nonlinear with 18.7 dB maximum enhancement. Parenchymal enhancement was observed, and uptake and washout curves generated. Enhancement lasted 20 minutes. Ischemia was also seen using B-mode. In conclusion, EchoGen produces vascular and parenchymal enhancement. Ischemia was seen with all imaging modes

  • Mathematical modelling of the human cardiovascular system during an exercise test of the lower limbs and the recuperation phase

    The primary role of the cardiovascular system is to deliver a required amount of oxygen to various organs. These needs vary with time and depend on the vascular site. To maintain a required diffusion level of oxygen in the capillary networks, the cardiovascular system is controlled by regulation processes that maintain pressure and blood flow to the required physiological levels. The authors have developed a nonlinear hemodynamic model associated with a varying elastance model of the heart and four simple control processes acting on the heart rate and the vascular resistances. The computed results, showing variations of arterial mean pressure, heart rate and vascular resistances agree with the experimental data under resting conditions, during moderate exercise of 200 W and during the recuperation phase.

  • Processing Near Infrared Spectroscopy Signals Using Canonical Correlation Analysis

    Functional near infrared spectroscopy signals (fNIRS) are measured by a number of LED-detector pairs. Estimation of event related responses from these signals needs multivariate analysis methods. This study concentrates on a particular multivariate method, namely the canonical correlation analysis and investigates its use for eliminating trend and noise effects from fNIRS signals and estimating event related haemodynamic response. Proposed methods are applied to real cognitive data for validation

  • Computer model of cardiac diastolic dynamics

    A dynamic model of diastolic pressure (DP/dt) was derived from basic biophysical principles for use in a systems analysis of circulatory blood flow. In the model, DP/dt is considered to be biphasic in nature and of the general mathematical form DP/dt f(R, Q) where R (ventricular relaxation rate) controls the isovolemic relaxation phase and Q (flow into the ventricle) determines the pressure during the diastolic filling period. When the model is incorporated into a general cardiovascular model it can be used in computer simulation studies to analyze the effects of changes in parameters such as diastolic ventricular compliance and relaxation time on overall circulatory blood flow.<<ETX>>

  • Thermal rhythmography-topograms of the spectral analysis of fluctuations in skin temperature

    It has been reported that skin blood flow and, consequently, skin temperature exhibit several periodic fluctuations. Although the mechanisms and physiological basis underlying these fluctuations are not yet well understood, it is thought that the fluctuations originate in the periodic rhythms of the autonomic nervous system. In this study, a program for a far-infrared thermal imaging system was developed which is capable of displaying topograms of the power spectra of an arbitrary frequency range with respect to changes in skin temperature (i.e. thermal rhythm). Thermographic images were taken using a high-speed far-infrared thermal camera. The change in the skin temperature with respect to time at every pixel was obtained from the time series of the thermograms, and the power spectrum was calculated by the FFT method using the personal computer. The amplitude of the power spectrum at an arbitrary frequency range was changed into pseudo-colors at each pixel, and a 2-dimensional or 3-dimensional color image of the amplitude mapping of the power spectrum at each frequency range was obtained. We are now analyzing differences between healthy subjects and patients with Raynaud's syndrome in the distribution of the rhythms of skin temperature using this system.

  • Experimental Study on the Effects of Branching Vessels on Temperature Distribution in Microwave Ablation Therapy

    Theoretical work has shown that blood flow plays an important role in determining temperature profiles of heated tissues. And in the complex blood network, the construction of branching vessels is the most important. In this paper, an experimental study on the effects of branching vessels on temperature distribution was performed. The experiment was implemented in a muscle-equivalent microwave phantom instead of liver tissue, because they have similar electric characteristics. We investigated the effect on temperature distribution of different blood velocities, and provided a academic gist for compensatory measure in clinic.

  • Application of FastICA to pulse wave

    We consider fast independent component analysis (FastICA), which is one of the independent component analysis algorithms. FastICA was proposed by Aapo Hyvarinen et al., (2001). It adopts the method of extracting the independent components one after another by the batch method using kurtosis. This method has fast convergence. The purpose of this research is to apply FastICA to the feature extraction of pulse waves of a human being, and to verify its effectiveness. The pulse waves contain a lot of information concerning the circulation of the blood from the heart to the various parts of the body. When blood flows from the heart and is transmitted to the tips as a wave motion, it is modified by physiological conditions such as the heart beat movement, the circulation of the blood flow, and changes in the state of the minor artery system, which leads to the distortion of the shape of the waves. The individual distortions have been evaluated and several trials have been performed to evaluate the health of a person. SOM is used to cluster the pulse waves and the features extracted from each cluster are considered.

  • Simulation of brain death for detection and diagnosis

    An electrical analog model of the arterial system of the upper extremities of a Yuvatan swine is presented. The model is used for studying the brain death conditions by measuring the intraoccular pressure (IOP). The data obtained with this model have been correlated to the biological data.<<ETX>>

  • High frequency ultrasound speckle flow imaging - comparison with Doppler optical coherence tomography (DOCT)

    Visualization of the microcirculation can provide important diagnostic and therapeutic monitoring information in vascular and neoplastic diseases. Previously, we described a Doppler optical coherence tomography (DOCT) system with a minimum detectable velocity of /spl sim/0.5 mm/s at 32 fps with limited imaging depth (/spl sim/2 mm). High frequency ultrasound (>40 MHz) has deeper penetration; however, real-time visualization of slow blood flow is difficult to achieve. We aim to develop a noninvasive ultrasound technique for microvascular imaging of slow flowing blood. We describe a speckle-variance flow processing (SFP) algorithm based on detecting the changes in B-mode pixel intensity on a high frequency ultrasound (HFUS) system operating at 40-60 MHz. The velocity sensitivity of the algorithm was determined by a flow phantom using blood-mimicking fluid. In in vivo experiments, microcirculation in the tadpole cardiovascular system and superficial tumor blood flow in mouse were observed using HFUS SFP to compare its performance to DOCT. The velocity sensitivity was 0.2 mm/s at 30 fps, and the SFP index shows a nonlinear relationship with flow velocity. Microcirculation in deeper structures, such as mouse kidney, was demonstrated. To our knowledge, this is the first demonstration of real-time microcirculation imaging using a non-Doppler HFUS. The velocity sensitivity and spatial resolution of such a system approaches that of DOCT with improved depth penetration, and can he utilized to visualize slow blood flow in the microcirculation of small animals and humans.



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