Artificial intelligence and machine learning for optical coherence tomography-based diagnosis in central serous chorioretinopathy

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Abstract

The aim of the present study was to examine the potential of machine learning for identification of isolated neurosensory retina detachment and retinal pigment epithelium (RPE) alterations as diagnostic criteria of central serous chorioretinopathy (CSC).

Material and methods. Patients with acute CSC in whom a standard ophthalmic examination and optical coherence tomography (OCT) using RTVue-XR Avanti (Angio Retina HD scan protocol, 6 × 6 mm) was performed were included in the study. 10-μm en face slab above the RPE layer was used to create ground truth masks. Learning aims were defined as identification of 3 classes of structural abnormalities on OCT cross-sectional scans: class 1 – subretinal fluid, class 2 – RPE abnormalities, and class 3 – leakage points. Data for each of the 3 classes included: 4800/1400 training/test images for class 1, 2000/802 training/test images for class 2, and 1504/408 training/test images for class 3. Unet-similar architecture was used for segmentation of abnormalities on OCT cross-sectional scans.

Results. Analysis of test sets revealed sensitivity, specificity, precision, and F1-score for detection of subretinal fluid of 0.61, 0.99, 0.99, and 0.76, respectively. For detection of RPE abnormalities sensitivity, specificity, precision, and F1-score were 0.14, 0.95, 0.94 and 0.24, respectively. For detection of leakage point sensitivity, specificity, precision, and F1-score were 0.06, 1.0, 1.0, and 0.12, respectively.

Conclusions. Thus, machine learning demonstrated high potential in the OCT-based identification of structural abnormalities associated with acute CSC (neurosensory retina detachment and RPE alterations). Topical identification of the leakage point appears to be possible using large learning sets.

About the authors

Alexey N. Kulikov

S.M. Kirov Military Medical Academy

Email: alexey.kulikov@mail.ru
SPIN-code: 6440-7706

MD, PhD, DMedSc, Professor, Head of the Department

Russian Federation, Saint Petersburg

Ekaterina Yu. Malahova

Pavlov Institute of Physiology Russian Academy of Sciences

Email: katerina.malahova@gmail.com

Associate Researcher

Russian Federation, Saint Petersburg

Dmitrii S. Maltsev

S.M. Kirov Military Medical Academy

Author for correspondence.
Email: glaz.med@yandex.ru
ORCID iD: 0000-0001-6598-3982

MD, PhD, ophthalmologist of the Ophthalmology Department

Russian Federation, Saint Petersburg

References

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Supplementary files

Supplementary Files
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1. JATS XML
2. Fig. 1. Example of detection of subretinal fluid within an individual B-scan by the taught-in neural network: а – a raw cross-sectional OCT scan; b – resultant image of detection of subretinal fluid accumulation area; c – distribution of a probabilistic characteristic of subretinal fluid presence

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3. Fig. 2. Representative example of subretinal fluid detection within a stack of B-scans by the taught-in neural network: а – en face image demonstrating the subretinal fluid distribution; b – resultant image after detection and mapping of subretinal fluid from a stack of B-scans; c – distribution of a probabilistic characteristic of subretinal fluid presence on an individual B-scan. The dashed line represents a position of cross-sectional scan

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Copyright (c) 2019 Kulikov A.N., Malahova E.Y., Maltsev D.S.

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This work is licensed under a Creative Commons Attribution 4.0 International License.
 


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