Cardiac-gated slit lamp videography as a novel approach to assessing a microcirculatory network

Paul F. Brennan, Dewar D. Finlay, Mark S. Spence, Agnes Awauh, James A.D. McLaughlin, Jonathan E. Moore, M. Andrew Nesbit, Emanuele Trucco, Ruixuan Wang, C. B. Tara Moore

Research output: Contribution to journalArticle

Abstract

In this article we describe the development of a system that is designed to image and in turn, allow characterization of the microcirculation in conjunctiva. To characterise the blood flow the system simultaneously captures high quality imagery alongside information on the cardiac cycle, using a multimodal image and biosignal acquisition approach. Images are captured using a smartphone camera attached, via a bespoke adapter, to a 40x magnification slit lamp. Images are recorded as videos at a resolution of up to approximately 1920 x 1080 pixels per frame (i.e. 1080k) and sampled at 60 frames per second. Information on the cardiac cycle is captured using a phonocardiogram device. In order to allow time synchronisation of the video with the phonocardiogram, the phonocardiogram output signal is fed via a custom adapter to the audio input of the smartphone video recording device. This allows for the phonocardiogram to be time synchronised in the audio layer of the video file. This software system provides the opportunity for cardiac gated assessment of a readily obtainable microvascular network, namely the conjunctival vasculature.

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalComputing in Cardiology
Volume44
DOIs
Publication statusPublished - 2017

Fingerprint

Smartphones
Electric lamps
Microcirculation
Equipment and Supplies
Video recording
Video Recording
Conjunctiva
Imagery (Psychotherapy)
Microvessels
Synchronization
Blood
Software
Pixels
Cameras
Smartphone
Slit Lamp

Cite this

Brennan, P. F., Finlay, D. D., Spence, M. S., Awauh, A., McLaughlin, J. A. D., Moore, J. E., ... Moore, C. B. T. (2017). Cardiac-gated slit lamp videography as a novel approach to assessing a microcirculatory network. Computing in Cardiology, 44, 1-4. https://doi.org/10.22489/CinC.2017.138-248
Brennan, Paul F. ; Finlay, Dewar D. ; Spence, Mark S. ; Awauh, Agnes ; McLaughlin, James A.D. ; Moore, Jonathan E. ; Nesbit, M. Andrew ; Trucco, Emanuele ; Wang, Ruixuan ; Moore, C. B. Tara. / Cardiac-gated slit lamp videography as a novel approach to assessing a microcirculatory network. In: Computing in Cardiology. 2017 ; Vol. 44. pp. 1-4.
@article{d2c19fefff7b4e28bdfe83d920638063,
title = "Cardiac-gated slit lamp videography as a novel approach to assessing a microcirculatory network",
abstract = "In this article we describe the development of a system that is designed to image and in turn, allow characterization of the microcirculation in conjunctiva. To characterise the blood flow the system simultaneously captures high quality imagery alongside information on the cardiac cycle, using a multimodal image and biosignal acquisition approach. Images are captured using a smartphone camera attached, via a bespoke adapter, to a 40x magnification slit lamp. Images are recorded as videos at a resolution of up to approximately 1920 x 1080 pixels per frame (i.e. 1080k) and sampled at 60 frames per second. Information on the cardiac cycle is captured using a phonocardiogram device. In order to allow time synchronisation of the video with the phonocardiogram, the phonocardiogram output signal is fed via a custom adapter to the audio input of the smartphone video recording device. This allows for the phonocardiogram to be time synchronised in the audio layer of the video file. This software system provides the opportunity for cardiac gated assessment of a readily obtainable microvascular network, namely the conjunctival vasculature.",
author = "Brennan, {Paul F.} and Finlay, {Dewar D.} and Spence, {Mark S.} and Agnes Awauh and McLaughlin, {James A.D.} and Moore, {Jonathan E.} and Nesbit, {M. Andrew} and Emanuele Trucco and Ruixuan Wang and Moore, {C. B. Tara}",
note = "Funding provided by Northern Ireland Chest Heart and Stroke.",
year = "2017",
doi = "10.22489/CinC.2017.138-248",
language = "English",
volume = "44",
pages = "1--4",
journal = "Computing in Cardiology",
issn = "2325-8861",
publisher = "IEEE Computer Society",

}

Brennan, PF, Finlay, DD, Spence, MS, Awauh, A, McLaughlin, JAD, Moore, JE, Nesbit, MA, Trucco, E, Wang, R & Moore, CBT 2017, 'Cardiac-gated slit lamp videography as a novel approach to assessing a microcirculatory network', Computing in Cardiology, vol. 44, pp. 1-4. https://doi.org/10.22489/CinC.2017.138-248

Cardiac-gated slit lamp videography as a novel approach to assessing a microcirculatory network. / Brennan, Paul F.; Finlay, Dewar D.; Spence, Mark S.; Awauh, Agnes; McLaughlin, James A.D.; Moore, Jonathan E.; Nesbit, M. Andrew; Trucco, Emanuele; Wang, Ruixuan; Moore, C. B. Tara.

In: Computing in Cardiology, Vol. 44, 2017, p. 1-4.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Cardiac-gated slit lamp videography as a novel approach to assessing a microcirculatory network

AU - Brennan, Paul F.

AU - Finlay, Dewar D.

AU - Spence, Mark S.

AU - Awauh, Agnes

AU - McLaughlin, James A.D.

AU - Moore, Jonathan E.

AU - Nesbit, M. Andrew

AU - Trucco, Emanuele

AU - Wang, Ruixuan

AU - Moore, C. B. Tara

N1 - Funding provided by Northern Ireland Chest Heart and Stroke.

PY - 2017

Y1 - 2017

N2 - In this article we describe the development of a system that is designed to image and in turn, allow characterization of the microcirculation in conjunctiva. To characterise the blood flow the system simultaneously captures high quality imagery alongside information on the cardiac cycle, using a multimodal image and biosignal acquisition approach. Images are captured using a smartphone camera attached, via a bespoke adapter, to a 40x magnification slit lamp. Images are recorded as videos at a resolution of up to approximately 1920 x 1080 pixels per frame (i.e. 1080k) and sampled at 60 frames per second. Information on the cardiac cycle is captured using a phonocardiogram device. In order to allow time synchronisation of the video with the phonocardiogram, the phonocardiogram output signal is fed via a custom adapter to the audio input of the smartphone video recording device. This allows for the phonocardiogram to be time synchronised in the audio layer of the video file. This software system provides the opportunity for cardiac gated assessment of a readily obtainable microvascular network, namely the conjunctival vasculature.

AB - In this article we describe the development of a system that is designed to image and in turn, allow characterization of the microcirculation in conjunctiva. To characterise the blood flow the system simultaneously captures high quality imagery alongside information on the cardiac cycle, using a multimodal image and biosignal acquisition approach. Images are captured using a smartphone camera attached, via a bespoke adapter, to a 40x magnification slit lamp. Images are recorded as videos at a resolution of up to approximately 1920 x 1080 pixels per frame (i.e. 1080k) and sampled at 60 frames per second. Information on the cardiac cycle is captured using a phonocardiogram device. In order to allow time synchronisation of the video with the phonocardiogram, the phonocardiogram output signal is fed via a custom adapter to the audio input of the smartphone video recording device. This allows for the phonocardiogram to be time synchronised in the audio layer of the video file. This software system provides the opportunity for cardiac gated assessment of a readily obtainable microvascular network, namely the conjunctival vasculature.

U2 - 10.22489/CinC.2017.138-248

DO - 10.22489/CinC.2017.138-248

M3 - Article

VL - 44

SP - 1

EP - 4

JO - Computing in Cardiology

JF - Computing in Cardiology

SN - 2325-8861

ER -