1. Articles from Xiangning Wang

    1-2 of 2
    1. Automatic Choroid Layer Segmentation from Optical Coherence Tomography Images Using Deep Learning

      Automatic Choroid Layer Segmentation from Optical Coherence Tomography Images Using Deep Learning

      The choroid layer is a vascular layer in human retina and its main function is to provide oxygen and support to the retina. Various studies have shown that the thickness of the choroid layer is correlated with the diagnosis of several ophthalmic diseases. For example, diabetic macular edema (DME) is a leading cause of vision loss in patients with diabetes. Despite contemporary advances, automatic segmentation of the choroid layer remains a challenging task due to low contrast, inhomogeneous intensity, inconsistent texture and ambiguous boundaries between the choroid and sclera in Optical Coherence Tomography (OCT) images. The majority of currently implemented ...

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    2. Choroidal Variations in Diabetic Macular Edema: Fluorescein Angiography and Optical Coherence Tomography

      Choroidal Variations in Diabetic Macular Edema: Fluorescein Angiography and Optical Coherence Tomography

      Purposes : To (i) evaluate variations in choroidal thickness (CT) and choroidal volume (CV) in diabetic macular edema (DME), as demonstrated by fluorescein angiography (FA) and enhanced depth-imaging (EDI) optical coherence tomography (OCT) (EDI-OCT) and (ii) correlate these variations with visual acuity. Methods : This study was a retrospective observational case series of patients with diabetic retinopathy (DR) and DME. The study groups comprised 77 DR patients ( n = 87), all of whom underwent color fundus photography, FA, and OCT on the same day. The control group comprised 25 age-matched healthy individuals ( n = 50 eyes). CT was measured by manual segmentation (EDI-OCT built-in ...

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    1-2 of 2
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    1. (2 articles) Shanghai Jiao Tong University
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