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Effects of Interpolation on the Inverse Problem of Electrocardiography
2019
2019 Computing in Cardiology Conference (CinC)
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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
2010
Europace
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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
2017
IEEE Transactions on Biomedical Engineering
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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)
2005
Annals of Biomedical Engineering
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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]
2009
International Federation for Medical and Biological Engineering Proceedings
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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]
2016
Lecture Notes in Computer Science
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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
2014
IEEE Transactions on Medical Imaging
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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
2019
Frontiers in Physiology
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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
2019
IEEE Access
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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
2020
Medical and Biological Engineering and Computing
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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
2020
BMC Bioinformatics
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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
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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
2008
IEEE Transactions on Biomedical Engineering
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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
QUANTIFICATION OF RESPIRATORY SINUS ARRHYTHMIA WITH HIGH-FRAMERATE ELECTRICAL IMPEDANCE TOMOGRAPHY
2013
Acta Polytechnica
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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
2006
IEEE Transactions on Medical Imaging
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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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