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Journal article
MSGANet-RAV: A multiscale guided attention network for artery-vein segmentation and classification from optic disc and retinal images
Journal of optometry, Vol.15(Suppl. 1), pp.S58-S69
2022
PMID: 36396540
Abstract
Background
Retinal and optic disc images are used to assess changes in the retinal vasculature. These can be changes associated with diseases such as diabetic retinopathy and glaucoma or induced using ophthalmodynamometry to measure arterial and venous pressure. Key steps toward automating the assessment of these changes are the segmentation and classification of the veins and arteries. However, such segmentation and classification are still required to be manually labelled by experts. Such automated labelling is challenging because of the complex morphology, anatomical variations, alterations due to disease and scarcity of labelled data for algorithm development. We present a deep machine learning solution called the multiscale guided attention network for retinal artery and vein segmentation and classification (MSGANet-RAV).
Methods
MSGANet-RAV was developed and tested on 383 colour clinical optic disc images from LEI-CENTRAL, constructed in-house and 40 colour fundus images from the AV-DRIVE public dataset. The datasets have a mean optic disc occupancy per image of 60.6% and 2.18%, respectively. MSGANet-RAV is a U-shaped encoder-decoder network, where the encoder extracts multiscale features, and the decoder includes a sequence of self-attention modules. The self-attention modules explore, guide and incorporate vessel-specific structural and contextual feature information to segment and classify central optic disc and retinal vessel pixels.
Results
MSGANet-RAV achieved a pixel classification accuracy of 93.15%, sensitivity of 92.19%, and specificity of 94.13% on LEI-CENTRAL, outperforming several reference models. It similarly performed highly on AV-DRIVE with an accuracy, sensitivity and specificity of 95.48%, 93.59% and 97.27%, respectively.
Conclusion
The results show the efficacy of MSGANet-RAV for identifying central optic disc and retinal arteries and veins. The method can be used in automated systems designed to assess vascular changes in retinal and optic disc images quantitatively.
Details
- Title
- MSGANet-RAV: A multiscale guided attention network for artery-vein segmentation and classification from optic disc and retinal images
- Authors/Creators
- A Z M Ehtesham Chowdhury - School of Information Technology, Murdoch University, 90 South Street, Murdoch, WA 6150, AustraliaGraham A Mann - School of Information Technology, Murdoch University, 90 South Street, Murdoch, WA 6150, AustraliaWilliam Huxley Morgan - Lions Eye Institute, 2 Verdun Street, Nedlands, WA 6009, AustraliaAleksandar Vukmirovic - Lions Eye Institute, 2 Verdun Street, Nedlands, WA 6009, AustraliaAndrew Mehnert - Lions Eye Institute, 2 Verdun Street, Nedlands, WA 6009, AustraliaFerdous A Sohel
- Publication Details
- Journal of optometry, Vol.15(Suppl. 1), pp.S58-S69
- Publisher
- Elsevier España, S.L.U
- Identifiers
- 991005628868707891
- Copyright
- © 2022 Spanish General Council of Optometry
- Murdoch Affiliation
- Centre for Crop and Food Innovation; School of Information Technology
- Language
- English
- Resource Type
- Journal article
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