Simultaneous mapping of endocardium and epicardium from multielectrode intrachamber and intravenous catheters: a computer simulation-based validation

Baysoy, Engin
Cunedioglu, Ugur
Yilmaz, Buelent
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 and epicardial surface will be beneficial to characterize and discriminate the endocardial and epicardial sources of the arrhythmias more accurately In this study, we used statistical estimation method to map the endocardial and epicardial surfaces simultaneously based on combined usage of the MBC and MIVC The statistical estimation method is based on high-resolution training data set to hypothesize the relationship between catheter measurements and inaccessible sites To test tills approach, we created a high-resolution map database consisting of computer simulation results of Aliev-Panfilov model of cardiac electrical activity on 3-dimensional Auckland canine heart geometry The simulation database included 2590 maps each paced from a unique endocardial or epicardial site Fifty or five percent of the database was used as the training data set and the remaining as test data set in the statistical estimation procedure We selected 64 sites on the left and 64 on the right endocardial surfaces of the model heart geometry and used them as the surrogate MBC measurement sites Ninety-one sites on the meal-Mum corresponding to the major coronary veins served as the surrogate MIVC leads Finally, we tested the success of the method to determine the source of the arrhythmias using the correlation coefficient between the original and estimated activation maps and linear distance between their earliest activated sites The performance of this approach was promising, such as when MBC: on the left endocardium and MIVC were used to:tether, the average linear distance was similar to 2 4 mm and mean correlation coefficient was 0 995 It was possible to locate 95% of epicardial arrhythmia cases correctly, on the epicardium Ninety-nine percent of left endocardially originating arrhythmias were correctly located on the left endocardium The results of this study showed that this approach is feasible and requires further effort (C) 2010 Elsevier Inc All rights reserved


Multielectrode venous catheter mapping as a high quality constraint for electrocardiographic inverse solution
Serinağaoğlu Doğrusöz, Yeşim; YILMAZ, BÜLENT; Brooks, DH (Elsevier BV, 2002-01-01)
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 ...
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.
Evaluation of 3D printed carotid anatomical models in planning carotid artery stenting
Gocer, Hakan; Durukan, Ahmet Baris; Tunc, Osman; Naseri, Erdinc; Ercan, Ertugrul (Baycinar Tibbi Yayincilik, 2020-04-01)
Background: We aimed to investigate the potential role of three-dimensional printed anatomical models in pre-procedural planning, practice, and selection of carotid artery stent and embolic protection device size and location.
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...
How do annuloplasty rings affect mitral leaflet dynamic motion?
Bothe, Wolfgang; Kvitting, JPE; Swanson, Julia; Göktepe, Serdar; Vo, Kathy; Ingels, Neil; Miller, Craig (Oxford University Press (OUP), 2010-09-01)
Objectives: To define the effects of annuloplasty rings (ARs) on the dynamic motion of anterior mitral leaflet (AML) and posterior mitral leaflet (PML). Methods: Fifty-eight adult, Dorsett-hybrid, male sheep (49 5 kg) had radiopaque markers inserted: eight around the mitral annulus, four along the central meridian (from edge to annulus) of the AML (#A(1)-#A(4)) and one on the PML edge (#P-1). True-sized Edwards Cosgrove (COS, n = 12), St Jude RSAR (St. Jude Medical, St. Paul, MN, USA) (n = 12), Carpentier-E...
Citation Formats
E. Baysoy, U. Cunedioglu, and B. Yilmaz, “Simultaneous mapping of endocardium and epicardium from multielectrode intrachamber and intravenous catheters: a computer simulation-based validation,” JOURNAL OF ELECTROCARDIOLOGY, pp. 56–62, 2010, Accessed: 00, 2020. [Online]. Available: