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An Efficient Lens Structures Segmentation Method on AS-OCT Images
2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), 2020Lens structures segmentation on anterior segment optical coherence tomography (AS-OCT) images is a fundamental task for cataract grading analysis. In this paper, in order to reduce the computational cost while keeping the segmentation accuracy, we propose an efficient segmentation method for lens structures segmentation. At first, we adopt an efficient
Guiping, Cao +7 more
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Polymeric nanoparticles as OCT contrast agents
Journal of Nanoparticle Research, 2012In this study, the optical properties of two nano-sized polymer colloids in optical coherence tomography (OCT) were compared in vitro with respect to their potential use as contrast agents. We used two types of particles: compact hydrophobic spherical polystyrene (PS) particles and soft water-swollen nanogel (NG) particles both with grafted ...
Wa’el Al Rawashdeh +8 more
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Anterior Segment Optical Coherence Tomography (AS-OCT) Visualization of Anterior Vitritis
Ocular Immunology and Inflammation, 2022The clinical grading of vitreous haze presents some limitations such as subjectivity and intra-grader variability. On the other hand the proposed OCT-based methods only explore the posterior part of the vitreous. Here we describe the inflammatory changes affecting the anterior vitreous imaged by Anterior Segment Optical Coherence, Tomography (AS-OCT ...
Federico Zicarelli +2 more
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Hybrid Variation-Aware Network for Angle-Closure Assessment in AS-OCT
IEEE Transactions on Medical Imaging, 2022Automatic angle-closure assessment in Anterior Segment OCT (AS-OCT) images is an important task for the screening and diagnosis of glaucoma, and the most recent computer-aided models focus on a binary classification of anterior chamber angles (ACA) in AS-OCT, i.e., open-angle and angle-closure.
Jinkui Hao +8 more
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Lens structure segmentation from AS-OCT images via shape-based learning
Computer Methods and Programs in Biomedicine, 2023The lens is one of the important refractive media in the eyeball. Abnormality of the nucleus or cortex in the lens can lead to ocular disorders such as cataracts and presbyopia. To achieve an accurate diagnosis, segmentation of these ocular structures from anterior segment optical coherence tomography (AS-OCT) is essential.
Huihui Fang +8 more
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Retinal Layer Segmentation Reformulated as OCT Language Processing
2020In the medical field, semantic segmentation has recently been dominated by deep-learning based image processing methods. Convolutional Neural Network approaches analyze image patches, draw complex features and latent representations and take advantage of these to label image pixels and voxels.
Arianne Tran +4 more
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Adaptive feature squeeze network for nuclear cataract classification in AS-OCT image
Journal of Biomedical Informatics, 2022Nuclear cataract (NC) is an age-related cataract disease. Cataract surgery is an effective method to improve the vision and life quality of NC patients. Anterior segment optical coherence tomography (AS-OCT) images are noninvasive, reproductive, and easy-measured, which can capture opacity clearly on the lens nucleus region.
Xiaoqing, Zhang +6 more
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Anterior Segment Optical Coherence Tomography (AS-OCT)
2018Anterior segment optical coherence tomography (AS-OCT) is a non-contact method analogous to ultrasound biomicroscopy (UBM) for the evaluation of the anterior segment structure with a higher resolution that uses infrared instead of ultrasound. In this chapter, we discuss the available types of AS-OCT. 1.
Hassan Hashemi +2 more
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