Blind Source Separation of Different Retinal Pulsatile Patterns from Simultaneous Long-term Binocular Ophthalmoscopic Video-records

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F19%3APU133089" target="_blank" >RIV/00216305:26220/19:PU133089 - isvavai.cz</a>

Výsledek na webu

<a href="https://ieeexplore.ieee.org/document/8857560" target="_blank" >https://ieeexplore.ieee.org/document/8857560</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/EMBC.2019.8857560" target="_blank" >10.1109/EMBC.2019.8857560</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Blind Source Separation of Different Retinal Pulsatile Patterns from Simultaneous Long-term Binocular Ophthalmoscopic Video-records

Popis výsledku v původním jazyce

Optical imaging of retinal hemodynamic function is an important part of ophthalmologic research. Development and inventing of imaging devices and data analysis methods are both just in progress. The current study innovatively implements two blind source separation (BSS) techniques (i.e. spatial Principal Component Analysis – sPCA; and spatial Independent Component Analysis – sICA) in application of an automatic detection and segmentation of a distinct Optic Disc (OD) areas with different hemodynamic properties from a simultaneous binocular video-ophthalmoscopic records. Both methods detected 3 different spatial patterns mostly symmetric over both eyes stable and reproducible over investigated participants, i.e. central Spontaneous Vessel Pulsations (SVPs), inner OD intensity pulsations and other OD pulsations. Dynamics of all mentioned patterns has a periodic character with similar main frequency (possibly corresponding to subject-specific heart rate) but shifted phase decreasing patterns’ mutual high crosscorrelations. The sICA estimates a higher rate of phase shifts than sPCA.

Název v anglickém jazyce

Blind Source Separation of Different Retinal Pulsatile Patterns from Simultaneous Long-term Binocular Ophthalmoscopic Video-records

Popis výsledku anglicky

Optical imaging of retinal hemodynamic function is an important part of ophthalmologic research. Development and inventing of imaging devices and data analysis methods are both just in progress. The current study innovatively implements two blind source separation (BSS) techniques (i.e. spatial Principal Component Analysis – sPCA; and spatial Independent Component Analysis – sICA) in application of an automatic detection and segmentation of a distinct Optic Disc (OD) areas with different hemodynamic properties from a simultaneous binocular video-ophthalmoscopic records. Both methods detected 3 different spatial patterns mostly symmetric over both eyes stable and reproducible over investigated participants, i.e. central Spontaneous Vessel Pulsations (SVPs), inner OD intensity pulsations and other OD pulsations. Dynamics of all mentioned patterns has a periodic character with similar main frequency (possibly corresponding to subject-specific heart rate) but shifted phase decreasing patterns’ mutual high crosscorrelations. The sICA estimates a higher rate of phase shifts than sPCA.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20601 - Medical engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of IEEE Engineering in Medicine and Biology Conference

ISBN

—

ISSN

1557-170X

e-ISSN

—

Počet stran výsledku

4

Strana od-do

4729-4732

Název nakladatele

Neuveden

Místo vydání

neuveden

Místo konání akce

Berlin

Datum konání akce

23. 7. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000557295305037