Multielectrode venous catheter mapping as a high quality constraint for electrocardiographic inverse solution

Download

index.pdf

Date

2002-01-01

Author

Serinağaoğlu Doğrusöz, Yeşim
YILMAZ, BÜLENT
Brooks, DH

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

263
views

0
downloads

A persistent challenge in solving inverse problems in electrocardiography is the application of suitable constraints to the calculation of cardiac sources. Whether one formulates the inverse problem in terms of epicardial potentials or activation wavefronts, the problem is physically ill-posed and hence results in numerically unstable computations. Suitable physiological constraints applied with appropriate weighting can recover useful inverse solutions. However, it is often difficult to determine the best possible constraints and their optimal weighting. We have recently begun to use multi-electrode catheters as a means of mapping epicardial signals in animal models. To accommodate the sparse sampling of this venous catheter based approach, we have applied statistical signal processing methods to estimate complete epicardial maps of activation time and epicardial potentials. Such measurements-and the estimated maps from them-also have the potential to provide high quality constraints for electrocardiographic inverse problems because they provide direct-albeit sparse-access to the desired solution. In this presentation we describe several approaches we have applied to extract useful constraints from sparsely sampled epicardial signals as well as a training set of epicardial maps, and use them to improve the quality of computed inverse solutions. Results suggest that combining various information sources provides valuable constraint information. Such a multimodal approach to cardiac mapping is clinically and technically viable and offers a possible means to overcome a major remaining limitation of inverse electrocardiography.

Subject Keywords

Cardiology and Cardiovascular Medicine

URI

https://hdl.handle.net/11511/36815

Journal

JOURNAL OF ELECTROCARDIOLOGY

DOI

https://doi.org/10.1054/jelc.2002.37157

Collections

Department of Electrical and Electronics Engineering, Article

Suggestions

OpenMETU
Core

Simultaneous mapping of endocardium and epicardium from multielectrode intrachamber and intravenous catheters: a computer simulation-based validation Baysoy, Engin; Cunedioglu, Ugur; Yilmaz, Buelent (Elsevier BV, 2010-01-01) A multielectrode basket-shaped contact catheter (MBC) provides simultaneous recordings of unipolar or bipolar electrograms from within the heart chambers Another catheter-based mapping approach uses the multielectrode intravenous catheters (MIVCs), which are widely used to diagnose and treat supraventricular arrhythmias It is also known that mapping techniques are usually limited to one surface at a time Therefore, an approach that can be used for simultaneous mapping of left and right endocardial surfaces ...
Reduced leadset selection and performance evaluation in the inverse problem of electrocardiography for reconstructing the ventricularly paced electrograms No, F. Gharbalchi; Serinağaoğlu Doğrusöz, Yeşim; Onak, O. N.; Weber, G-W (Elsevier BV, 2020-05-01) Objective: Noninvasive electrocardiographic imaging (ECGI) is used for obtaining high-resolution images of the electrical activity of the heart, and is a powerful method with the potential to detect certain arrhythmias. However, there is no 'best' lead configuration in the literature to measure the torso potentials. This paper evaluates ECGI reconstructions using various reduced leadset configurations, explores whether one can find a common reduced leadset configuration that can accurately reconstruct the e...
Turn to Turn Fault Diagnosis for Induction Machines Based on Wavelet Transformation and BP Neural Network Najafi, Atabak; Iskender, Iris; Farhadi, Pavam; Najafi, Babak (2011-09-10) Based upon Wavelet Transformation analysis and BP neural network, a method for the fault diagnosis of stator winding is proposed in this paper. Firstly wavelet transformation was used to decompose vibration time signal of stator to extract the characteristic values - wavelet transformation energy, and features were input in to the BP NN. After training the BP NN could be used to identify the stator winding fault (Turn to Turn fault) patterns. Three typical turn to turn faults as 10 turn, 20 turn and 35 turn...
Metabolic syndrome and its components among women with polycystic ovary syndrome: a systematic review and meta-analysis Hallajzadeh, Jamal; Khoramdad, Maliheh; Karamzad, Nahid; Almasi-Hashiani, Amir; Janati, Ali; Ayubi, Erfan; Pakzad, Reza; Sullman, Mark J. M.; Safiri, Saeid (Maad Rayan Publishing Company, 2018-01-01) Introduction: The objectives of this study were to provide an estimate of the prevalence of metabolic syndrome (MetS) and its components among women with PCOS; and calculate the odds ratio (OR) for MetS (using different definitions of MetS) in women with PCOS, compared to healthy controls.
Anterior Mitral Leaflet Curvature During the Cardiac Cycle in the Normal Ovine Heart Kvitting, JPE; Bothe, Wolfgang; Göktepe, Serdar; Rausch, Manuel; Swanson, Julia; Kuhl, Ellen; Ingels, Neil; Miller, Craig (Ovid Technologies (Wolters Kluwer Health), 2010-10-26) Background-The dynamic changes of anterior mitral leaflet (AML) curvature are of primary importance for optimal left ventricular filling and emptying but are incompletely characterized.

Citation Formats

Y. Serinağaoğlu Doğrusöz, B. YILMAZ, and D. Brooks, “Multielectrode venous catheter mapping as a high quality constraint for electrocardiographic inverse solution,” JOURNAL OF ELECTROCARDIOLOGY, pp. 65–73, 2002, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/36815.