Photoplethysmographic analysis of retinal videodata based on the Fourier domain approach

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dc.contributor.authorKolář, Radimcs
dc.contributor.authorOdstrčilík, Jancs
dc.contributor.authorTornow, Ralf-Petercs
dc.coverage.issue12cs
dc.coverage.volume12cs
dc.date.accessioned2021-11-18T11:54:01Z
dc.date.available2021-11-18T11:54:01Z
dc.date.issued2021-12-01cs
dc.description.abstractAssessment of retinal blood flow inside the optic nerve head (ONH) and the peripapillary area is an important task in retinal imaging. For this purpose, an experimental binocular video ophthalmoscope that acquires precisely synchronized video sequences of the optic nerve head and peripapillary area from both eyes has been previously developed. It enables to compare specific characteristics of both eyes and efficiently detect the eye asymmetry. In this paper, we describe a novel methodology for the analysis of acquired video data using a photoplethysmographic approach. We describe and calculate the pulsatile attenuation amplitude (PAA) spatial map, which quantifies the maximum relative change of blood volume during a cardiac cycle using a frequency domain approach. We also describe in detail the origin of PAA maps from the fundamental (the first) and the second harmonic component of the pulsatile signal, and we compare the results obtained by time-based and frequency-based approaches. In several cases, we show the advantages and possibilities of this device and the appropriate image analysis approach - fast measurement and comparison of blood flow characteristics of both eyes at a glance, the robustness of this approach, and the possibility of easy detection of asymmetry.en
dc.formattextcs
dc.format.extent7405-7421cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationBiomedical Optics Express. 2021, vol. 12, issue 12, p. 7405-7421.en
dc.identifier.doi10.1364/BOE.441451cs
dc.identifier.issn2156-7085cs
dc.identifier.other173242cs
dc.identifier.urihttp://hdl.handle.net/11012/202282
dc.language.isoencs
dc.publisherOptica Publishing Groupcs
dc.relation.ispartofBiomedical Optics Expresscs
dc.relation.urihttps://www.osapublishing.org/boe/fulltext.cfm?uri=boe-12-12-7405cs
dc.rights(C) Optica Publishing Groupcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2156-7085/cs
dc.subjectretinal imagingen
dc.subjectimage processingen
dc.subjectimaging photoplethysmographyen
dc.titlePhotoplethysmographic analysis of retinal videodata based on the Fourier domain approachen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-173242en
sync.item.dbtypeVAVen
sync.item.insts2022.04.01 12:55:16en
sync.item.modts2022.04.01 12:15:05en
thesis.grantorVysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií. Ústav biomedicínského inženýrstvícs
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