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

Result code in 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>

Alternative codes found

RIV/61989592:15110/21:73608597

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20601 - Medical engineering

Project

<a href="/en/project/NV17-29452A" target="_blank" >NV17-29452A: Sensorimotor network modulation by targeted therapy of post-stroke spasticity</a><br>

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2021

Confidentiality

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

Name of the periodical

IEEE TRANSACTIONS ON MEDICAL IMAGING

ISSN

0278-0062

e-ISSN

1558-254X

Volume of the periodical

40

Issue of the periodical within the volume

3

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

852-864

UT code for WoS article

000626332400007

EID of the result in the Scopus database

2-s2.0-85097155759