Blind Source Separation of Retinal Pulsatile Patterns in Optic Nerve Head Video-Recordings

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F21%3APU137850" target="_blank" >RIV/00216305:26220/21:PU137850 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15110/21:73608597

Výsledek na webu

<a href="https://ieeexplore.ieee.org/document/9269462" target="_blank" >https://ieeexplore.ieee.org/document/9269462</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/TMI.2020.3039917" target="_blank" >10.1109/TMI.2020.3039917</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Blind Source Separation of Retinal Pulsatile Patterns in Optic Nerve Head Video-Recordings

Popis výsledku v původním jazyce

Dynamic optical imaging of retinal hemodynamics is a rapidly evolving technique in vision and eye-disease research. Video-recording, which may be readily accessible and affordable, captures several distinct functional phenomena such as the spontaneous venous pulsations (SVP) of central vein or local arterial blood supply etc. These phenomena display specific dynamic patterns that have been detected using manual or semi-automated methods. We propose a pioneering concept in retina video-imaging using blind source separation (BSS) serving as an automated localizer of distinct areas with temporally synchronized hemodynamics. The feasibility of BSS techniques (such as spatial principal component analysis and spatial independent component analysis) and K-means based post-processing method were successfully tested on the monocular and binocular video-ophthalmoscopic (VO) recordings of optic nerve head (ONH) in healthy subjects. BSSs automatically detected three spatially distinct reproducible areas, i.e. SVP, optic cup pulsations (OCP) that included areas of larger vessels in the nasal part of ONH, and “other” pulsations (OP). The K-means post-processing reduced a spike noise from the patterns’ dynamics while high linear dependence between the non-filtered and post-processed signals was preserved. Although the dynamics of all patterns were heart rate related, the morphology analysis demonstrated significant phase shifts between SVP and OCP, and between SVP and OP. In addition, we detected low frequency oscillations that may represent respiratory-induced effects in time-courses of the VO recordings.

Název v anglickém jazyce

Blind Source Separation of Retinal Pulsatile Patterns in Optic Nerve Head Video-Recordings

Popis výsledku anglicky

Dynamic optical imaging of retinal hemodynamics is a rapidly evolving technique in vision and eye-disease research. Video-recording, which may be readily accessible and affordable, captures several distinct functional phenomena such as the spontaneous venous pulsations (SVP) of central vein or local arterial blood supply etc. These phenomena display specific dynamic patterns that have been detected using manual or semi-automated methods. We propose a pioneering concept in retina video-imaging using blind source separation (BSS) serving as an automated localizer of distinct areas with temporally synchronized hemodynamics. The feasibility of BSS techniques (such as spatial principal component analysis and spatial independent component analysis) and K-means based post-processing method were successfully tested on the monocular and binocular video-ophthalmoscopic (VO) recordings of optic nerve head (ONH) in healthy subjects. BSSs automatically detected three spatially distinct reproducible areas, i.e. SVP, optic cup pulsations (OCP) that included areas of larger vessels in the nasal part of ONH, and “other” pulsations (OP). The K-means post-processing reduced a spike noise from the patterns’ dynamics while high linear dependence between the non-filtered and post-processed signals was preserved. Although the dynamics of all patterns were heart rate related, the morphology analysis demonstrated significant phase shifts between SVP and OCP, and between SVP and OP. In addition, we detected low frequency oscillations that may represent respiratory-induced effects in time-courses of the VO recordings.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20601 - Medical engineering

Projekt

<a href="/cs/project/NV17-29452A" target="_blank" >NV17-29452A: Modulace senzorimotorických sítí při cílené terapii spasticity po ischemickém iktu</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

IEEE TRANSACTIONS ON MEDICAL IMAGING

ISSN

0278-0062

e-ISSN

1558-254X

Svazek periodika

40

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

852-864

Kód UT WoS článku

000626332400007

EID výsledku v databázi Scopus

2-s2.0-85097155759