Publication detail

Blind Source Separation of Different Retinal Pulsatile Patterns from Simultaneous Long-term Binocular Ophthalmoscopic Video-records

LABOUNKOVÁ, I. LABOUNEK, R. ODSTRČILÍK, J. HRACHO, M. NESTRAŠIL, I. TORNOW, R. KOLÁŘ, R.

Original Title

Blind Source Separation of Different Retinal Pulsatile Patterns from Simultaneous Long-term Binocular Ophthalmoscopic Video-records

Type

conference paper

Language

English

Original Abstract

Optical imaging of retinal hemodynamic function is an important part of ophthalmologic research. Development and inventing of imaging devices and data analysis methods are both just in progress. The current study innovatively implements two blind source separation (BSS) techniques (i.e. spatial Principal Component Analysis – sPCA; and spatial Independent Component Analysis – sICA) in application of an automatic detection and segmentation of a distinct Optic Disc (OD) areas with different hemodynamic properties from a simultaneous binocular video-ophthalmoscopic records. Both methods detected 3 different spatial patterns mostly symmetric over both eyes stable and reproducible over investigated participants, i.e. central Spontaneous Vessel Pulsations (SVPs), inner OD intensity pulsations and other OD pulsations. Dynamics of all mentioned patterns has a periodic character with similar main frequency (possibly corresponding to subject-specific heart rate) but shifted phase decreasing patterns’ mutual high crosscorrelations. The sICA estimates a higher rate of phase shifts than sPCA.

Keywords

retinal imaging, spontaneous venous pulsation, principal component analysis, independent component analysis

Authors

LABOUNKOVÁ, I.; LABOUNEK, R.; ODSTRČILÍK, J.; HRACHO, M.; NESTRAŠIL, I.; TORNOW, R.; KOLÁŘ, R.

Released

23. 7. 2019

ISBN

1557-170X

Periodical

Proceedings IEEE EMBC

State

United States of America

Pages from

4729

Pages to

4732

Pages count

4

URL

https://ieeexplore.ieee.org/document/8857560

BibTex

@inproceedings{BUT158328,
  author="LABOUNKOVÁ, I. and LABOUNEK, R. and ODSTRČILÍK, J. and HRACHO, M. and NESTRAŠIL, I. and TORNOW, R. and KOLÁŘ, R.",
  title="Blind Source Separation of Different Retinal Pulsatile Patterns from Simultaneous Long-term Binocular Ophthalmoscopic Video-records",
  booktitle="Proceedings of IEEE Engineering in Medicine and Biology Conference",
  year="2019",
  journal="Proceedings IEEE EMBC",
  pages="4729--4732",
  doi="10.1109/EMBC.2019.8857560",
  issn="1557-170X",
  url="https://ieeexplore.ieee.org/document/8857560"
}