Filters








84 Hits in 12.2 sec

Proceedings Of The 4Th Conference On Biomedical Applications Of Electrical Impedance Tomography: Abstracts [article]

William Lionheart, Richard Bayford
2003 Zenodo  
Abstracts from the 4th Conference on Biomedical Applications of Electrical Impedance Tomography held at the Department of Mathematics, University of Manchester Institute of Science and Technology (UMIST  ...  For the plane placement the electrodes are placed on the top of the cylinder. For the ring placement an equal number of electrodes are placed into two rings around the cylinder.  ...  I will describe a method for warping an existing head-shaped surface to fit a set of measured points on an arbitrary head.  ... 
doi:10.5281/zenodo.17924 fatcat:iniab6q6dfcdxle4a325c5hp4e

A comparison of two EIT systems suitable for imaging impedance changes in epilepsy

L Fabrizi, A McEwan, T Oh, E J Woo, D S Holder
2009 Physiological Measurement  
The finite element method combined with a realistic, multi-layer, head model comprising 12 tissue domains was used for the simulations.  ...  All of the reconstruction methods shown involve the solution of the inverse problem without the computationally complex step of computing a Jacobian matrix.  ...  The head mesh used in this study was originally developed by Dr. A. Tizzard of Middlesex University.  ... 
doi:10.1088/0967-3334/30/6/s07 pmid:19491447 fatcat:nzeetw52ofaslcwhd2kxylvlpu

Inside Humans: Creating a Simple Layered Anatomical Model from Human Surface Scans

Martin Komaritzan, Stephan Wenninger, Mario Botsch
2021 Frontiers in Virtual Reality  
However, these models typically focus on the surface of the human body, since the acquisition of the volumetric interior would require prohibitive medical imaging.  ...  Our model can be used for physical simulation, statistical analysis, and anatomical visualization in computer animation and medical applications, which we demonstrate on several examples.  ...  ACKNOWLEDGMENTS The authors are grateful to Jascha Achenbach for valuable discussion and implementation hints and to Hendrik Meyer The scale and ruler emojis in Figure 2 are designed by OpenMoji (https  ... 
doi:10.3389/frvir.2021.694244 fatcat:iinfby7njbhcza4ahudmynwxwa

Proceedings Of The 18Th International Conference On Biomedical Applications Of Electrical Impedance Tomography [article]

Alistair Boyle, Ryan Halter, Ethan Murphy, Andy Adler
2017 Zenodo  
of Engineering at Dartmouth, Hanover, New Hampshire, USA This document is the collection of papers accepted for presentation at the 18th International Conference on Biomedical Applications of Electrical  ...  Proceedings of the 18th International Conference on Biomedical Applications of ELECTRICAL IMPEDANCE TOMOGRAPHY Edited by Alistair Boyle, Ryan Halter, Ethan Murphy, Andy Adler June 21-24, 2017 Thayer School  ...  Measurements was conducted on male test subjects. Data analysis of the signal proposed the potential of this modality in regional pulmonary diagnostic.  ... 
doi:10.5281/zenodo.601555 fatcat:qhwameib6rd43krznqytsaeju4

Magnetic field modeling with surface currents. Part II. Implementation and usage of bfieldtools

Rasmus Zetter, Antti J. Mäkinen, Joonas Iivanainen, Koos C. J. Zevenhoven, Risto J. Ilmoniemi, Lauri Parkkonen
2020 Journal of Applied Physics  
More sophisticated methods to limit high-frequency ringing directly constrain the gradient of the stream function; the spatial gradient of the stream function defines the surface-current density, and by  ...  Starting from the quasi-static approximation of Maxwell's equations, one can compute G using a model of the head volume conductor.  ... 
doi:10.1063/5.0016087 fatcat:aqhmvbdiureshb54ltwindkiiq

Proceedings Of The 18Th International Conference On Biomedical Applications Of Electrical Impedance Tomography [article]

Alistair Boyle, Ryan Halter, Ethan Murphy, Andy Adler
2017 Zenodo  
of Engineering at Dartmouth, Hanover, New Hampshire, USA This document is the collection of papers accepted for presentation at the 18th International Conference on Biomedical Applications of Electrical  ...  Proceedings of the 18th International Conference on Biomedical Applications of ELECTRICAL IMPEDANCE TOMOGRAPHY Edited by Alistair Boyle, Ryan Halter, Ethan Murphy, Andy Adler June 21-24, 2017 Thayer School  ...  Measurements was conducted on male test subjects. Data analysis of the signal proposed the potential of this modality in regional pulmonary diagnostic.  ... 
doi:10.5281/zenodo.557093 fatcat:qn6cu4oazrefhmqgo6ykd4jxma

Density functional theory for transition metals and transition metal chemistry

Christopher J. Cramer, Donald G. Truhlar
2009 Physical Chemistry, Chemical Physics - PCCP  
We introduce density functional theory and review recent progress in its application to transition metal chemistry.  ...  functionals, band theory, software, validation tests, and applications to spin states, magnetic exchange coupling, spectra, structure, reactivity, and catalysis, including molecules, clusters, nanoparticles, surfaces  ...  Acknowledgements The authors are grateful to Yan Zhao for innumerable discussions, for collaboration on density functional development and applications, and for providing Fig. 3 and to Ilaria Ciofini  ... 
doi:10.1039/b907148b pmid:19924312 fatcat:op5wyiq7yzd2vmsbqtjcw3w7hq

Abstracts Of The 16 Th International Conference On Electrical Bio-Impedance And 17 Th International Conference On Electrical Impedance Tomography [article]

Stig Ollmar, Farhad Abtahi, Björn-Erik Erlandsson, Birgitta Janerot-Sjöberg, Kaj Lindecrantz, Mannan Mridha, Ingrid Nicander, Fernand Seoane, Heikki Teriö
2016 Zenodo  
16 th International Conference on Electrical Bio-Impedance (ICEBI) 17 th International Conference on Electrical Impedance Tomography (EIT) Stockholm 19–23 June 2016 Book of Abstracts  ...  We expect this model becomes useful for scientists in need of a high quality piglet electrical head model.  ...  We ran a forward model on the segmented head to solve for current density. Synthetic B z in a specified 2D plane was then calculated from the current density by using the Biot-Savart law [1] .  ... 
doi:10.5281/zenodo.55753 fatcat:fh3blon7kfhonbepjfllnwqjbq

The Virtual Brain Integrates Computational Modeling and Multimodal Neuroimaging

Petra Ritter, Michael Schirner, Anthony R. McIntosh, Viktor K. Jirsa
2013 Brain Connectivity  
For instance, such models allow for the exploration of consequences of focal and distributed pathological changes in the system, enabling us to identify and develop approaches to counteract those unfavorable  ...  Importantly, they often allow an understanding of the underlying mechanisms beyond computational reproduction.  ...  Acknowledgments The authors acknowledge the support of the James S.  ... 
doi:10.1089/brain.2012.0120 pmid:23442172 pmcid:PMC3696923 fatcat:i6677e3cubaqzcbikvczz2uvba

Toward a quantitative description of large-scale neocortical dynamic function and EEG

Paul L. Nunez
2000 Behavioral and Brain Sciences  
Because of the anisotropic nature of corticocortical fibers, the most realistic model geometry is not obvious.  ...  We heeded the recommendations (sect. 1.1) for high-density recording (by using a 128-channel electrode array).  ...  Tractable models of complex systems must focus on a relatively small number of order parameters.  ... 
doi:10.1017/s0140525x00003253 fatcat:qgg5rqiyj5h45aamfootetmxf4

Toward a quantitative description of large-scale neocortical dynamic function and EEG

P L Nunez
2000 Behavioral and Brain Sciences  
A general conceptual framework for large-scale neocortical dynamics based on data from many laboratories is applied to a variety of experimental designs, spatial scales, and brain states.  ...  EEG frequencies may involve a "matching" of local resonant frequencies with one or more of the many, closely spaced global frequencies.  ...  Because of the anisotropic nature of corticocortical fibers, the most realistic model geometry is not obvious.  ... 
pmid:11301576 fatcat:cmcfenrrdzfnbndia5kgtnsiqu

A Review and Analysis of Automatic Optical Inspection and Quality Monitoring Methods in Electronics Industry

Abd Al Rahman M. Abu Ebayyeh, Alireza Mousavi
2020 IEEE Access  
However, there was high reliance on simulated data for training and validation of the CNN model because real data was highly imbalanced.  ...  Their approach used properties of the components movement on the pick-up head to introduce two types of model key points that indicate the shape of a model component and extracted approximate corner points  ...  However, researchers tend to use the specific electronic component that they are analyzing for the title and keyword indexing in their research articles instead of using general terms such as electronic  ... 
doi:10.1109/access.2020.3029127 fatcat:hoimi667cndsrimsnwasamtdey

Proceedings of the 20th International Conference on Biomedical Applications of Electrical Impedance Tomography

Alistair Boyle, Kirill Aristovich, Anna Witkowska-Wrobel, David Holder
2019 Zenodo  
is the collection of papers accepted for presentation at the 20th International Conference on Biomedical Applications of Electrical Impedance Tomography.  ...  Proceedings of the 20th International Conference on Biomedical Applications of Electrical Impedance Tomography Edited by Alistair Boyle, Kirill Aristovich, Anna Witkowska-Wrobel and David Holder This document  ...  Acknowledgements This work was supported in part by International Research Fellow of Japan Society for the Promotion of Science (Graduate School of Science and Engineering, Chiba University) and JSPS KAKENHI  ... 
doi:10.5281/zenodo.2691704 fatcat:bbqzgi2rz5hgreqgswujj6gv2q

A combined local and global motion estimation and compensation method for cardiac CT

Qiulin Tang, Beshan Chiang, Akinola Akinyemi, Alexander Zamyatin, Bibo Shi, Satoru Nakanishi, Bruce R. Whiting, Christoph Hoeschen
2014 Medical Imaging 2014: Physics of Medical Imaging  
Furthermore, one lobe of the lung of this model has been substituted by a high resolution lung voxel model, resulting in a dual-lattice geometry model.  ...  In this paper, we introduce a tensor-based computation and modeling framework for the analysis of hyperspectral images to detect head and neck cancer.  ...  2 cm) in tens of minutes yielding images containing millions of spectra. Spectra are then automatically classified as one of seven cell-types in prostate tissue in a matter of seconds.  ... 
doi:10.1117/12.2043492 fatcat:fyzpc5m6jbh7fjohqpdmtzkhte

Modeling & Analysis

2003 NeuroImage  
obtained in subjects not having realistic MRI-constructed head models.  ...  The accuracy of the method was tested using individual 21 realistic MRI-constructed head models as gold standard.  ...  The results show that the EEG source reconstruction based on high electrode density and realistic head model quantitatively performed as well as more established tools in a presurgical workup .  ... 
doi:10.1016/s1053-8119(05)70006-9 fatcat:zff2suxcofbxvetfrwfwcxi3zm
« Previous Showing results 1 — 15 out of 84 results