ADVANCED PHASE ANALYSIS OF RETINAL VIDEOS USING ECG

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F24%3APU152714" target="_blank" >RIV/00216305:26220/24:PU152714 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

ADVANCED PHASE ANALYSIS OF RETINAL VIDEOS USING ECG

Popis výsledku v původním jazyce

Spectral analysis is one way to further explore retinal hemodynamics and vascular pulsation. Specifically, for the phase component of the spectrum of retinal videos, the importance in retinal analysis is not yet fully defined. In this work we review original research for advanced spectral phase analysis of retinal videos from healthy subjects. And the aim of the study is to find out whether the phase value has significance in the classification of blood vessels (arteries and veins). Using the electrocardiographic signals that were simultaneously recorded, we perform normalization according to each cardiac cycle. We measured the left eye of 13 healthy subjects and investigated whether spectral phase analysis is relevant within the cardiac cycle based on photoplethysmography. We found that the temporal difference between the maximum pulsation of arteries and veins in the optic nerve head tissue is on average 9% of the actual cardiac period. For our data set, this corresponds to an average time delay of

Název v anglickém jazyce

ADVANCED PHASE ANALYSIS OF RETINAL VIDEOS USING ECG

Popis výsledku anglicky

Spectral analysis is one way to further explore retinal hemodynamics and vascular pulsation. Specifically, for the phase component of the spectrum of retinal videos, the importance in retinal analysis is not yet fully defined. In this work we review original research for advanced spectral phase analysis of retinal videos from healthy subjects. And the aim of the study is to find out whether the phase value has significance in the classification of blood vessels (arteries and veins). Using the electrocardiographic signals that were simultaneously recorded, we perform normalization according to each cardiac cycle. We measured the left eye of 13 healthy subjects and investigated whether spectral phase analysis is relevant within the cardiac cycle based on photoplethysmography. We found that the temporal difference between the maximum pulsation of arteries and veins in the optic nerve head tissue is on average 9% of the actual cardiac period. For our data set, this corresponds to an average time delay of

Druh

O - Ostatní výsledky

CEP obor

—

OECD FORD obor

20601 - Medical engineering

Projekt

<a href="/cs/project/GA21-18578S" target="_blank" >GA21-18578S: Funkční zobrazování sítnice s dvěma vlnovými délkami a současnou akvizicí biosignálů pro hodnocení očního krevního oběhu</a><br>

Návaznosti

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

Rok uplatnění

2024

Kód důvěrnosti údajů

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