Publication detail

Photoplethysmographic analysis of retinal videodata based on the Fourier domain approach

KOLÁŘ, R. ODSTRČILÍK, J. TORNOW, R.

Original Title

Photoplethysmographic analysis of retinal videodata based on the Fourier domain approach

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

retinal imaging; image processing; imaging photoplethysmography

Authors

KOLÁŘ, R.; ODSTRČILÍK, J.; TORNOW, R.

Released

1. 12. 2021

Publisher

Optica Publishing Group

Location

USA

ISBN

2156-7085

Periodical

Biomedical Optics Express

Year of study

12

Number

12

State

United States of America

Pages from

7405

Pages to

7421

Pages count

17

URL

https://www.osapublishing.org/boe/fulltext.cfm?uri=boe-12-12-7405

Full text in the Digital Library

http://hdl.handle.net/11012/202282

BibTex

@article{BUT173242,
  author="Radim {Kolář} and Jan {Odstrčilík} and Ralf-Peter {Tornow}",
  title="Photoplethysmographic analysis of retinal videodata based on the Fourier domain approach",
  journal="Biomedical Optics Express",
  year="2021",
  volume="12",
  number="12",
  pages="7405--7421",
  doi="10.1364/BOE.441451",
  issn="2156-7085",
  url="https://www.osapublishing.org/boe/fulltext.cfm?uri=boe-12-12-7405"
}

Documents

boe-12-12-7405-FINAL.pdf