Segmentation of intra-retinal cysts from optical coherence tomography images using a fully convolutional neural network model

dc.contributor.authorGirish, G.N.
dc.contributor.authorThakur, B.
dc.contributor.authorChowdhury, S.R.
dc.contributor.authorKothari, A.R.
dc.contributor.authorRajan, J.
dc.date.accessioned2020-03-31T08:42:19Z
dc.date.available2020-03-31T08:42:19Z
dc.date.issued2019
dc.description.abstractOptical coherence tomography (OCT) is an imaging modality that is used extensively for ophthalmic diagnosis, near-histological visualization, and quantification of retinal abnormalities such as cysts, exudates, retinal layer disorganization, etc. Intra-retinal cysts (IRCs) occur in several macular disorders such as, diabetic macular edema, retinal vascular disorders, age-related macular degeneration, and inflammatory disorders. Automated segmentation of IRCs poses challenges owing to variations in the acquisition system scan intensities, speckle noise, and imaging artifacts. Several segmentation methods have been proposed in the literature for IRC segmentation on vendor-specific OCT images that lack generalizability across imaging systems. In this paper, we propose a fully convolutional network (FCN) model for vendor-independent IRC segmentation. The proposed method counteracts image noise variabilities and trains FCN models on OCT sub-images from the OPTIMA cyst segmentation challenge dataset (with four different vendor-specific images, namely, Cirrus, Nidek, Spectralis, and Topcon). Further, optimal data augmentation and model hyperparametrization are shown to prevent over-fitting for IRC area segmentation. The proposed method is evaluated on the test dataset with a recall/precision rate of 0.66/0.79 across imaging vendors. The Dice correlation coefficient of the proposed method outperforms that of the published algorithms in the OPTIMA cyst segmentation challenge with a Dice rate of 0.71 across the vendors. 2013 IEEE.en_US
dc.identifier.citationIEEE Journal of Biomedical and Health Informatics, 2019, Vol.23, 1, pp.296-304en_US
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/12871
dc.titleSegmentation of intra-retinal cysts from optical coherence tomography images using a fully convolutional neural network modelen_US
dc.typeArticleen_US

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