Epicardial Isochrones from a New High-Frequency ECG Imaging Technique

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F18%3A00509020" target="_blank" >RIV/68081731:_____/18:00509020 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.22489/CinC.2018.088" target="_blank" >http://dx.doi.org/10.22489/CinC.2018.088</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.22489/CinC.2018.088" target="_blank" >10.22489/CinC.2018.088</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Epicardial Isochrones from a New High-Frequency ECG Imaging Technique

Popis výsledku v původním jazyce

The aim of this study is to compare epicardial isochrone maps (EIM) derived from electrocardiographic (ECG) imaging with a new technique based on high frequency ECG isochrone maps (HFEIM) computation. nWe analyzed three subjects - normal, left bundle branch block (LBBB) and right bundle branch block (RBBB). Body surface potentials were measured: 5-minute supine, 2KHz sampling, 184 electrodes. These potentials were used for inverse reconstruction of EIM using patient-specific torsoheart geometry (CT). HFEIM was determined as follows: averaged body surface QRS amplitude envelopes 150-400 Hz (HFQRS) were projected onto the epicardium, the time delay from the onset of the QRS complex to centers of mass of projected HFQRS was computed. nThe EIM and HFEIM pattern of electrical activation was similar, especially for LBBB and RBBB subjects. The correlation between EIM and HFEIM activation times was 0.42, 0.82 and 0.83 for the NORMAL, LBBB and RBBB subjects respectively. Maximal dyssynchrony was about 40 ms lower for HFEIM than for EIM. nEIM and HFEIM provide comparable distribution of electrical delays but different reference values. Lower HFEIM dyssynchrony may reflect the electrical activation in an entire ventricular wall segment and may better correlate with local electro-mechanical function.

Název v anglickém jazyce

Epicardial Isochrones from a New High-Frequency ECG Imaging Technique

Popis výsledku anglicky

The aim of this study is to compare epicardial isochrone maps (EIM) derived from electrocardiographic (ECG) imaging with a new technique based on high frequency ECG isochrone maps (HFEIM) computation. nWe analyzed three subjects - normal, left bundle branch block (LBBB) and right bundle branch block (RBBB). Body surface potentials were measured: 5-minute supine, 2KHz sampling, 184 electrodes. These potentials were used for inverse reconstruction of EIM using patient-specific torsoheart geometry (CT). HFEIM was determined as follows: averaged body surface QRS amplitude envelopes 150-400 Hz (HFQRS) were projected onto the epicardium, the time delay from the onset of the QRS complex to centers of mass of projected HFQRS was computed. nThe EIM and HFEIM pattern of electrical activation was similar, especially for LBBB and RBBB subjects. The correlation between EIM and HFEIM activation times was 0.42, 0.82 and 0.83 for the NORMAL, LBBB and RBBB subjects respectively. Maximal dyssynchrony was about 40 ms lower for HFEIM than for EIM. nEIM and HFEIM provide comparable distribution of electrical delays but different reference values. Lower HFEIM dyssynchrony may reflect the electrical activation in an entire ventricular wall segment and may better correlate with local electro-mechanical function.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20601 - Medical engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Computing in Cardiology 2018

ISBN

—

ISSN

2325-887X

e-ISSN

—

Počet stran výsledku

4

Strana od-do

8744062

Název nakladatele

IEEE

Místo vydání

New York

Místo konání akce

Maastricht

Datum konání akce

23. 9. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000482598700276