Abstract：
:The goal of the 2007 PhysioNet/Computers in Cardiology Challenge was to try to establish how well it is possible to characterize the location and extent of old myocardial infarcts using electrocardiographic evidence supplemented by anatomical imaging information. A brief overview of the challenge and how different challengers approached the competition is provided, followed by detailed response of the first author to integrate electrophysiologic and anatomical data. The first author used the provided 120-electrode body-surface potential mapping data and magnetic resonance imaging heart and torso images to calculate epicardial potentials on customized ventricular geometries. A method was developed to define the location and extent of scar tissue based on the morphology of computed epicardial electrograms. Negative Q-wave deflection followed by R-wave on the left ventricular surface seemed to correspond with the location of the scar as determined by the gadolinium-enhanced magnetic resonance imaging gold standard in the supplied data sets. The method shows promising results as a noninvasive imaging tool to quantitatively characterize chronic infarcts and warrants further investigation on a larger patient data set.
journal_name
J Electrocardioljournal_title
Journal of electrocardiologyauthors
Dawoud F,Wagner GS,Moody G,Horácek BMdoi
10.1016/j.jelectrocard.2008.07.022subject
Has Abstractpub_date
2008-11-01 00:00:00pages
630-5issue
6eissn
0022-0736issn
1532-8430pii
S0022-0736(08)00272-0journal_volume
41pub_type
杂志文章abstract：:We studied the use of cardiac magnetic field mapping to detect patients with CAD without subjecting them to stress. Fifty-nine healthy control subjects and 101 patients with CAD without previous MI were included. The optimal positions for detecting CAD were located in the left superior parasternal and in the inferior ...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/j.jelectrocard.2007.03.013
更新日期：2007-09-01 00:00:00
abstract：BACKGROUND:Accurate detection of QRS complexes during mobile, ultra-long-term ECG monitoring is challenged by instances of high heart rate, dramatic and persistent changes in signal amplitude, and intermittent deformations in signal quality that arise due to subject motion, background noise, and misplacement of the ECG...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/j.jelectrocard.2020.02.016
更新日期：2020-01-01 00:00:00
abstract：OBJECTIVE:To determine the effect of exercise and heart rate on the early repolarization (ER) pattern; focusing on the new criteria for identification of ER. METHODS:The ECG measurements on the terminal QRS notch or slur found in early repolarization were quantitated before, during and after exercise; specifically: (i...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/j.jelectrocard.2019.03.005
更新日期：2019-01-01 00:00:00
abstract：INTRODUCTION:The mechanisms of torsade de pointes tachycardia (TdP) are incompletely understood. We aimed to investigate the mechanisms underlying TdP tachycardia in patients with spontaneous high-degree atrioventricular block (AVB). METHODS AND RESULTS:This retrospective study reviewed old TdP recordings after ventri...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/j.jelectrocard.2019.05.007
更新日期：2019-01-01 00:00:00
abstract：:Isolated T wave alternans (TWA) could be consistently induced in 13 dogs by infusion of an acid dextrose solution (ACD) and in nine with a 2% EDTA disodium solution. To study the factors concerned in evoking TWA, serial determinations of total and ionized serum calcium (ICa), Mg, K, pH, pCO2 and pO2 were performed. Ar...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/s0022-0736(78)80098-3
更新日期：1978-04-01 00:00:00
abstract：:This article shows the use of the equivalent surface source model in its application to the genesis of the surface ECG in which the sources are of the double layer type. This model has previously been shown to yield an accurate description of body surface potentials during the QRS interval. Its application to the gene...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1054/jelc.2001.28896
更新日期：2001-01-01 00:00:00
abstract：:The long-term goal of electrocardiography is to relate electric potentials on the body surface with activities in the heart. Many previously reported studies have focused on direct links between heart and body surface potentials. The goals of this study were first to validate computational methods of determining volum...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1054/jelc.2000.20309
更新日期：2000-01-01 00:00:00
abstract：:In a 66-year-old male with subacute extensive anterior wall myocardial infarction, we report a change in ST vector orientation from a basal anterior to a mid anterior after coronary artery recanalization of the proximal left anterior descending coronary artery with rotational atherectomy. The ST vector shift on the fr...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/j.jelectrocard.2009.05.001
更新日期：2009-09-01 00:00:00
abstract：AIMS:The objective of the study was to develop normal limits of the ECG in an apparently healthy population of South Asians living in India. METHODS:Three centres contributed to recording 12 lead ECGs on identical digital electrocardiographs. Apparently healthy volunteers were recruited and ECGs were first transferred...
journal_title：Journal of electrocardiology
pub_type： 杂志文章,多中心研究
doi：10.1016/j.jelectrocard.2015.04.013
更新日期：2015-07-01 00:00:00
abstract：BACKGROUND:We studied whether social media applications can serve as effective educational tools for teaching electrocardiogram (ECG) interpretation to medical residents. METHODS:39 emergency, family, and internal medicine residents participated in the 33-week "ECG of the Week" curriculum via Facebook and Twitter. ECG...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/j.jelectrocard.2017.04.010
更新日期：2017-01-01 00:00:00
abstract：:An electrocardiogram is presented which shows sinus rhythm with alternating Wolff-Parkinson-White (preexcitation) pattern. The frequency of intermittent preexcitation and mechanisms for its production are discussed. ...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/s0022-0736(78)80034-x
更新日期：1978-01-01 00:00:00
abstract：:Junctional ectopic tachycardia(JET) is a rare childhood arrhythmia originating from the area adjacent to the atrioventricular(AV) node. It often occurs after surgical procedures like repair of Tetralogy of Fallot, atrioventricular septal defect and ventricular septal defect, which are all performed in that area. While...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/j.jelectrocard.2017.01.015
更新日期：2017-01-01 00:00:00
abstract：BACKGROUND:Electrocardiogram (ECG) biometrics is an advanced technology, not yet covered by guidelines on criteria, features and leads for maximal authentication accuracy. OBJECTIVE:This study aims to define the minimal set of morphological metrics in 12-lead ECG by optimization towards high reliability and security, ...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/j.jelectrocard.2016.07.021
更新日期：2016-01-01 00:00:00
abstract：BACKGROUND:Hibernating myocardium develops inhomogeneity in myocardial sympathetic innervation with spontaneous sudden cardiac death (SCD) because of ventricular fibrillation (VF). The triggers and prodromal arrhythmias initiating SCD in this substrate are unknown. METHODS:Swine chronically instrumented with a proxima...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/j.jelectrocard.2006.05.026
更新日期：2006-10-01 00:00:00
abstract：:Body surface isopotential maps around early ventricular activation were investigated in 30 normal subjects by the use of the authors' signal-averaged body surface mapping system. The number of beats averaged was 96-154 (mean, 127). Two distinct patterns were recognized in the appearance of a maximum at the onset of ve...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/0022-0736(91)90025-h
更新日期：1991-07-01 00:00:00
abstract：:Computer analysis of electrocardiograms (ECGs) provides a large amount of ECG measurement data, which may be used for diagnostic classification and storage in ECG databases. Until now, neither error limits for ECG measurements have been specified nor has their influence on diagnostic statements been systematically inv...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/s0022-0736(96)80022-7
更新日期：1996-01-01 00:00:00
abstract：:To assess the effect of pacing drive cycle length on induction of sustained monomorphic ventricular tachycardia, 40 patients were prospectively studied in the drug-free state. Ventricular extrastimuli were sequentially delivered at the same coupling interval at each of three drive cycle lengths (600, 500, and 400 ms) ...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/0022-0736(92)90127-l
更新日期：1992-01-01 00:00:00
abstract：:Vagally mediated paroxysmal atrial fibrillation is typically described to occur in otherwise healthy young-to-middle aged males during periods of high vagal tone. We report a case of cardioinhibitory type neurocardiogenic syncope associated with atrial fibrillation in an elderly female during episodes of nausea. This ...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/j.jelectrocard.2014.07.007
更新日期：2014-09-01 00:00:00
abstract：:This is the first report on the stable occurrence of ventricular quadrigeminy as a manifestation of concealed bigeminy in a case of fixed and late coupled ventricular extrasystoles. A 46-year-old man is reported in whom the period of ventricular bigeminy alternated with the period of ventricular quadrigeminy. Coupling...
journal_title：Journal of electrocardiology
pub_type： 杂志文章,评审
doi：10.1016/s0022-0736(00)80106-5
更新日期：2000-01-01 00:00:00
abstract：:Body surface potential mapping is superior to 12-lead electrocardiogram in detection of acute and old myocardial infarctions. We examined the capability of the ST-T integral and T wave to detect exercise-induced ischemia in body surface potential mapping. Body surface potential mapping with 123 channels was recorded i...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1054/jelc.2003.50013
更新日期：2003-04-01 00:00:00
abstract：:We present a case of a woman with an asymptomatic intermittent 2:1 atrioventricular block. The baseline ECG showed a wide QRS with right bundle branch block pattern. Measurement of the HV interval during electrophysiological study was normal. During electrophysiological stimulation, a unique pattern of paradoxical con...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/j.jelectrocard.2017.03.003
更新日期：2017-01-01 00:00:00
abstract：:This contribution demonstrates some applications of the most recent release of ECGSIM, an interactive simulation program that enables the user to study the relationship between the electric current sources of the heart and the resulting electrocardiographic signals on the body surface as well as those on the surface o...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/j.jelectrocard.2011.05.006
更新日期：2011-09-01 00:00:00
abstract：:The case of a patient with complete atrioventricular block with capability of rapid ventriculoatrial conduction with unusual behavior is presented. Potential mechanisms are discussed. ...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/j.jelectrocard.2012.03.005
更新日期：2012-07-01 00:00:00
abstract：:Percutaneous radiofrequency catheter ablation (RFCA) has a very high success rate for certain arrhythmias, such as Wolff-Parkinson-White syndrome and idiopathic ventricular tachycardias in the right ventricular outflow tract. These arrhythmias are typically characterized by a single site of arrhythmogenic tissue that ...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/s0022-0736(94)80073-1
更新日期：1994-01-01 00:00:00
abstract：:Left bundle branch block (LBBB), traditionally viewed as an electrophysiologic abnormality, is increasingly recognized for its profound hemodynamic effects. LBBB causes asynchronous myocardial activation, which, in turn, may trigger ventricular remodeling. Exercise nuclear studies frequently show reversible perfusion ...
journal_title：Journal of electrocardiology
pub_type： 杂志文章,评审
doi：10.1054/jelc.2000.20330
更新日期：2000-01-01 00:00:00
abstract：BACKGROUND:Several studies have documented the prognostic significance of the signal-averaged electrocardiogram (SAECG) both after myocardial infarction and nonischemic cardiomyopathy. However, whether the SAECG can identify patients with implantable cardioverter-defibrillator (ICD) who receive appropriate therapy has ...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/j.jelectrocard.2005.08.009
更新日期：2006-04-01 00:00:00
abstract：:There is an increased risk of sudden cardiac death (SCD) and sudden cardiac arrest (SCA), in African Americans, the basis of which is likely multifactorial. African Americans have higher rates of traditional cardiac risk factors including hypertension, left ventricular hypertrophy, diabetes, coronary heart disease, an...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/j.jelectrocard.2014.07.023
更新日期：2014-11-01 00:00:00
abstract：:Until recently, ECG accuracy in localizing acute myocardial infarction (AMI) could be assessed only by comparing the ECGs with autopsy findings. This approach, however, preselected patients, including only those who died. It is possible that this postmortem group of patients would be different from the whole populatio...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/s0022-0736(82)80014-9
更新日期：1982-04-01 00:00:00
abstract：INTRODUCTION:Measures of heart rate variability (HRV) can be divided in time domain and frequency domain parameters. It is frequently ignored that estimation of frequency-domain parameters is a 2-step procedure where statistical error from the first step (spectral estimation) is neglected in subsequent analyses. METHO...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/j.jelectrocard.2008.02.014
更新日期：2008-07-01 00:00:00
abstract：:A 52-year-old woman exhibited Mobitz type II atrioventricular block with right bundle branch block and 1:1 atrioventricular conduction at or slower than 80 beats/min. Electrophysiologic study revealed transient HV interval block followed by recovery from the block at shorter coupling intervals without prolongation of ...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/s0022-0736(98)90009-7
更新日期：1998-01-01 00:00:00
