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Effects of Interpolation on the Inverse Problem of Electrocardiography

Yesim Serinagaoglu Dogrusoz, Laura Bear, Jake Bergquist, Remi Dubois, Wilson Good, Rob MacLeod, Ali Rababah, Job Stoks
2019 2019 Computing in Cardiology Conference (CinC)  
Our results showed that ECGI accuracy of an interpolation method highly depends on the location of the bad leads.  ...  The inverse-forward method was found to be the best among all interpolation methods applied in this study in terms of both missing BSP lead reconstruction and ECGI accuracy, even for the bad leads located  ...  Acknowledgements This is a collaborative work for the Consortium on ECG Imaging (CEI); all authors contributed equally.  ... 
doi:10.22489/cinc.2019.100 pmid:32123686 pmcid:PMC7051038 fatcat:ziuslrce7jgy7gbhqo4jbfauou

12-lead surface electrocardiogram reconstruction from implanted device electrograms

G. Stuart Mendenhall, Samir Saba
2010 Europace  
We investigated the feasibility and accuracy of reconstruction of a full 12-lead surface EKG from an implanted biventricular device.  ...  The techniques may be used for real-time or remote monitoring and diagnosis of rhythm disturbances, cardiac ischaemia, and lead integrity and stability.  ...  Single fixed dipole (SFD) representation of cardiac electrical forces models the summed electrical activity of the heart as a charge separation (electrical dipole) at the centre of the chest cavity.  ... 
doi:10.1093/europace/euq115 pmid:20410046 fatcat:kcuv4tskyrhu3f4attz5xrsnbq

Spatially Coherent Activation Maps for Electrocardiographic Imaging

Josselin Duchateau, Mark Potse, Remi Dubois
2017 IEEE Transactions on Biomedical Engineering  
Objective: Cardiac mapping is an important diagnostic step in cardiac electrophysiology. One of its purposes is to generate a map of the depolarization sequence.  ...  Methods: On top of the standard estimation of local activation time from unipolar intrinsic deflections, we propose to mutually compare the EGMs in order to estimate the delays in activation for neighboring  ...  ACKNOWLEDGMENT The authors gratefully acknowledge Pr. Michel Haïssaguerre and his team of cardiac electrophysiology in Bordeaux, France for the patient datasets.  ... 
doi:10.1109/tbme.2016.2593003 pmid:27448338 fatcat:gscddad5fjggrjxiwm4hsfz3je

Accuracy of Quadratic Versus Linear Interpolation in Noninvasive Electrocardiographic Imaging (ECGI)

Subham Ghosh, Yoram Rudy
2005 Annals of Biomedical Engineering  
Previously, linear interpolation (LI) on three-noded triangular surface elements was used in the BEM formulation.  ...  QI enhances the accuracy and resolution of ECGI reconstructions for two different inverse methods, Tikhonov regularization and Generalized Minimal Residual (GMRes) method, with the QI-GMRes combination  ...  ACKNOWLEDGMENTS We thank Dr Bruno Taccardi for the experiments with isolated canine hearts in the torso-tank, conducted in his laboratory at the University of Utah.  ... 
doi:10.1007/s10439-005-5537-x pmid:16133926 pmcid:PMC2151917 fatcat:b27v53cgsjgxlcdgks77m75dua

Isopotential ECG Imaging Correctly Identified Endocardial Ectopic Activation Site in the Case of Arrhythmia from Right Ventricular Outflow Tract [chapter]

P. Š ovíček, Š. Havránek, J. Šimek, M. Zborník, M. Mlček, O. Kittnar
2009 International Federation for Medical and Biological Engineering Proceedings  
The reconstructed early endocardial minimum (as opposed to the epicardial one) during initial low-amplitude 20 msec of 15 signal-averaged QRS complexes correctly located the earliest activation site to  ...  ECG Imaging using inverse electrocardiographic solution has been suggested as a potential aid to guide radiofrequency ablation of cardiac arrhythmias.  ...  The reconstructed early endocardial minimum (as opposed to the epicardial one) during initial low-amplitude 20 msec of 15 signal-averaged QRS complexes correctly located the earliest activation site to  ... 
doi:10.1007/978-3-642-03882-2_522 fatcat:q53eqncklve2zjqoorbfhcx6ea

Traversed Graph Representation for Sparse Encoding of Macro-Reentrant Tachycardia [chapter]

Mihaela Constantinescu, Su-Lin Lee, Sabine Ernst, Guang-Zhong Yang
2016 Lecture Notes in Computer Science  
Macro-reentrant atrial and ventricular tachycardias originate from additional circuits in which the activation of the cardiac chambers follows a high-frequency rotating pattern.  ...  in the case of incorrect ablation target estimation.  ...  Also, partial anatomical maps, due to the cardiologist's interest in one particular area, lead to incompleteness of the activation wave.  ... 
doi:10.1007/978-3-319-28712-6_5 fatcat:p44ecbibnnfypg7e5hyfmpgngm

Using Transmural Regularization and Dynamic Modeling for Noninvasive Cardiac Potential Imaging of Endocardial Pacing With Imprecise Thoracic Geometry

Burak Erem, Jaume Coll-Font, Ramon Martinez Orellana, Petr St'ovicek, Dana H. Brooks
2014 IEEE Transactions on Medical Imaging  
Here we address two of these impediments: the difficulty of reconstructing electric potentials on the inner (endocardial) as well as outer (epicardial) surfaces of the ventricles, and the need for full  ...  Cardiac electrical imaging from body surface potential measurements is increasingly being seen as a technology with the potential for use in the clinic, for example for pre-procedure planning or during-treatment  ...  INTRODUCTION T HERE is a growing interest in both research and industry in cardiac electrical imaging, that is, in technology and algorithms to reconstruct cardiac electrical activity based on remote potential  ... 
doi:10.1109/tmi.2013.2295220 pmid:24595345 pmcid:PMC3950945 fatcat:3u6rdxt75zfqto3vd42mezrqwi

ECG Imaging to Detect the Site of Ventricular Ischemia Using Torso Electrodes: A Computational Study

Vinay Kara, Haibo Ni, Erick Andres Perez Alday, Henggui Zhang
2019 Frontiers in Physiology  
clinically relevant and has an important effect on the reconstruction which must be quantified.  ...  Most inverse studies use the full resolution of the body surface potential (BSP) to reconstruct the epicardial potentials, however using a limited number of torso electrodes to interpolate the BSP is more  ...  As in previous studies, the results show that noise does have a detrimental effect on the performance of the regularised solutions particularly at low SNR (10 dB) leading to low CI and high II.  ... 
doi:10.3389/fphys.2019.00050 pmid:30804799 pmcid:PMC6378918 fatcat:fubx6nvcbjbn5autepk2b3ni7i

Forward Electrocardiogram Modeling by Small Dipoles Based on Whole-body Electric Field Analysis

Tatsuhito Nakane, Takahiro Ito, Nobuaki Matsuura, Hiroyoshi Togo, Akimasa Hirata
2019 IEEE Access  
Our computational results demonstrate the effectiveness of the ECG model using electric dipoles in comparison with measurement and the necessity to discuss the ground in a 12-lead ECG for the whole-body  ...  In this study, first, the electrical potential distribution on the surface of an anatomically detailed model was computed with volume conductor (electrical) analysis.  ...  The waveform of the ECG records a combination of electrical activities from all cardiac cells, including propagation in these specialized tissues.  ... 
doi:10.1109/access.2019.2938409 fatcat:caegxuehhzeqtopjnf6w67y5zq

In silico validation of electrocardiographic imaging to reconstruct the endocardial and epicardial repolarization pattern using the equivalent dipole layer source model

Jeanne van der Waal, Veronique Meijborg, Steffen Schuler, Ruben Coronel, Thom Oostendorp
2020 Medical and Biological Engineering and Computing  
The solution of the inverse problem of electrocardiology allows the reconstruction of the spatial distribution of the electrical activity of the heart from the body surface electrocardiogram (electrocardiographic  ...  Therefore, ECGI using the EDL model allows adequate reconstruction of cardiac repolarization times.  ...  Acknowledgments The authors thank Danila Potyagaylo and Olaf Dössel of the Institute of Biomedical Engineering, Karlsruhe Institute of Technology, for providing the gold standard repolarization times,  ... 
doi:10.1007/s11517-020-02203-y pmid:32474796 fatcat:73xtxs6yfvcffp3nr5gnhsiwjm

Conversion from electrocardiosignals to equivalent electrical sources on heart surface

G. V. Zhikhareva, Mikhail N. Kramm, O. N. Bodin, Ralf Seepold, Natividad Martinez Madrid, A. I. Chernikov, Y. A. Kupriyanova, N. A. Zhuravleva
2020 BMC Bioinformatics  
In this area, we hold reconstruction of the equivalent sources during the cardiac cycle at relatively low hardware cost.  ...  In order to obtain more detailed information about the electrical activity of the heart, we carry out a reconstruction of the distribution of equivalent electrical sources on the heart surface.  ...  Availability of data and materials Model of the heart electrical activity, based on cellular automata, is available from previous publications [8, 12] . 1  ... 
doi:10.1186/s12859-020-3354-8 pmid:32164555 fatcat:y4x5ptp3svhvzooru6wfnkdwmq

Noninvasive Activation Imaging of Ventricular Arrhythmias by Spatial Gradient Sparse in Frequency Domain -Application to Mapping Reentrant Ventricular Tachycardia

2018 IEEE Transactions on Medical Imaging  
The aim of this paper is to develop and evaluate a novel imaging method [spatial gradient sparse in frequency domain (SSF)] for the reconstruction of activation sequences of ventricular arrhythmia from  ...  We formulated and solved the electrocardiographic inverse problem in the frequency domain, and the activation time was encoded in the phase information of the imaging solution.  ...  This work was supported in part by NIH HL080093 and by the Institute for Engineering in Medicine of the University of Minnesota.  ... 
doi:10.1109/tmi.2018.2866951 pmid:30136937 pmcid:PMC6372101 fatcat:5uhw25r4ozebpplq7ssuathehm

Ultrasound Current Source Density Imaging

R. Olafsson, R.S. Witte, S.-W. Huang, M. ODonnell
2008 IEEE Transactions on Biomedical Engineering  
Surgery to correct severe heart arrhythmias usually requires detailed maps of the cardiac activation wave prior to ablation.  ...  The technique is based on a pressure-induced change in resistivity known as the acoustoelectric (AE) effect, which is spatially confined to the ultrasound focus.  ...  Acknowledgements This work was supported in part by the National Institutes of Health under Grant HL67647, Grant EB003451, and Grant HL082640, in part by the Department of Biomedical Engineering at the  ... 
doi:10.1109/tbme.2008.919115 pmid:18595802 pmcid:PMC2553012 fatcat:lm2p6hzfgvefxb6kyz7aqe2wnu


Christoph Hoog Antink, Steffen Leonhardt
2013 Acta Polytechnica  
The recent advent of medically approved Electrical Impedance Tomography (EIT) devices capable of recording up to 50 frames per second facilitates the application of this technology.  ...  This paper presents the automated selection of a cardiac-related signal from EIT data and quantitative analysis of this signal.  ...  Acknowledgements The author would like to thank Dipl.-Ing. Boudewijn Venema for helping with the SOMNOlab equipment.  ... 
doi:10.14311/ap.2013.53.0854 fatcat:keh4zfmbirbqzbdze55g3kef7m

Noninvasive reconstruction of three-dimensional ventricular activation sequence from the inverse solution of distributed equivalent current density

Zhongming Liu, Chenguang Liu, Bin He
2006 IEEE Transactions on Medical Imaging  
We propose a new electrocardiographic (ECG) inverse approach for imaging the three-dimensional (3-D) ventricular activation sequence based on the modeling and estimation of the equivalent current density  ...  The simulation results demonstrate that: 1) the single-site paced 3-D activation sequence can be well reconstructed from 200-channel body surface potential maps with additive Gaussian white noise of 20  ...  (3-D) image on cardiac electrical activity throughout the myocardial volume [20] .  ... 
doi:10.1109/tmi.2006.882140 pmid:17024834 fatcat:rs53i4kgtfcq3inm7ezfgrutsq
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