Photoplethysmographic analysis of retinal videodata based on the Fourier domain approach

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F21%3APU142166" target="_blank" >RIV/00216305:26220/21:PU142166 - isvavai.cz</a>
Result on the web
<a href="https://www.osapublishing.org/boe/fulltext.cfm?uri=boe-12-12-7405" target="_blank" >https://www.osapublishing.org/boe/fulltext.cfm?uri=boe-12-12-7405</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1364/BOE.441451" target="_blank" >10.1364/BOE.441451</a>

Result language
angličtina
Original language name
Photoplethysmographic analysis of retinal videodata based on the Fourier domain approach
Original language description
Assessment 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.
Czech name
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Czech description
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Type
J<sub>imp</sub> - 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/GA21-18578S" target="_blank" >GA21-18578S: Dual-wavelength functional retinal imaging and simultaneous biosignals acquisition for ocular blood circulation assessment</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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