Evidence mapPaperPMID 29363532Full record

ArticleThe British journal of ophthalmology2018

Automated diabetic retinopathy detection using optical coherence tomography angiography: a pilot study.

Harpal Singh Sandhu, Nabila Eladawi, Mohammed Elmogy, Robert Keynton, Omar Helmy, Shlomit Schaal, Ayman El-Baz

Registry-linked trialAbstract readMulticenter Study
PubMed Publisher
In one paragraph

Article in The British journal of ophthalmology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04215445 (Effect of Sodium Glucose co Transporter 2), which is not on this map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
12.2field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT04215445 phase4unknown statusstarted 2019, after this paper: background citation

Effect of Sodium Glucose co Transporter 2 (SGLT2) Inhibition on Optical Coherence Tomography Angiography (OCT-A) Parameters in Diabetic Chronic Kidney Disease (CKD)

Ran2019Enrolled90Registered outcomes3Posted comparisons0ConditionsChronic Kidney Diseases, Diabetes Mellitus, Diabetic RetinopathyArmsempagliflozin 25 mg, OCT-A
Open the trial in the graph
3 · Its place in the literature

Who cites it

33 citing papers in PubMed, 92 citations in OpenAlex.

  1. Observational
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  16. Machine learning in optical coherence tomography angiography.Experimental biology and medicine (Maywood, N.J.) · 2021
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 2 countries.

Harpal Singh SandhuDepartment of Ophthalmology and Visual Sciences, School of Medicine, University of Louisville, Louisville, Kentucky, USA.
Nabila EladawiFaculty of Computers and Information, Mansoura University, Mansoura, Egypt.
Mohammed ElmogyFaculty of Computers and Information, Mansoura University, Mansoura, Egypt.
Robert KeyntonBioengineering Department, University of Louisville, Louisville, Kentucky, USA.
Omar HelmyDepartment of Ophthalmology and Visual Sciences, University of Massachusetts Medical School, Worchester, Massachusetts, USA.
Shlomit SchaalDepartment of Ophthalmology and Visual Sciences, University of Massachusetts Medical School, Worchester, Massachusetts, USA.
Ayman El-BazBioengineering Department, University of Louisville, Louisville, Kentucky, USA.
University of Louisville · USMansoura University · EGUniversity of Massachusetts Chan Medical School · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundOptical coherence tomography angiography (OCTA) is increasingly being used to evaluate diabetic retinopathy, but the interpretation of OCTA remains largely subjective. The purpose of this study was to design a computer-aided diagnostic (CAD) system to diagnose non-proliferative diabetic retinopathy (NPDR) in an automated fashion using OCTA images.

methodsThis was a two-centre, cross-sectional study. Adults with type II diabetes mellitus (DMII) were eligible for inclusion. OCTA scans of the macula were taken, and the five vascular maps generated per eye were analysed by a novel CAD system. For the purpose of classification/diagnosis, three different local features-blood vessel density, blood vessel calibre and the size of the foveal avascular zone (FAZ)-were segmented from these images and used to train a new, automated classifier.

resultsOne hundred and six patients with DMII were included in the study, 23 with no DR and 83 with mild NPDR. When using features of the superficial retinal map alone, the system demonstrated an accuracy of 80.0% and area under the curve (AUC) of 76.2%. Using the features of the deep retinal map alone, accuracy was 91.4% and AUC 89.2%. When data from both maps were combined, the presented CAD system demonstrated overall accuracy of 94.3%, sensitivity of 97.9%, specificity of 87.0%, area under curve (AUC) of 92.4% and dice similarity coefficient of 95.8%.

conclusionAutomated diagnosis of NPDR using OCTA images is feasible and accurate. Combining this system with OCT data is a plausible next step that would likely improve its robustness.

Indexed as

Diagnosis, Computer-AssistedAdultAgedArea Under CurveCross-Sectional StudiesDiabetes Mellitus, Type 2Diabetic RetinopathyFemaleFluorescein AngiographyFovea CentralisHumansMaleMiddle AgedPilot ProjectsReproducibility of ResultsRetinal Vesselsdiagnostic tests/investigationimagingretina

Identifiers

PMID29363532
OpenAlexW2784716683

What Socratic holds

Textmetadata
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.