Results 41 to 50 of about 1,385,547 (382)

A Fundus Retinal Vessels Segmentation Scheme Based on the Improved Deep Learning U-Net Model

IEEE Access, 2019
Retinal vascular segmentation is very important for diagnosing fundus diseases. However, the existing methods of retinal vascular segmentation have some problems, such as low microvascular segmentation and wrong segmentation of pathological information ...
Xiuqin Pan, Qinrui Zhang, Hong Zhang, Sumin Li   +3 more
semanticscholar   +1 more source

Micro-Vessel Image Segmentation Based on the AD-UNet Model

IEEE Access, 2019
Retinal vessel segmentation plays a vital role in computer-aided diagnosis and treatment of retinal diseases. Considering the low contrast between retinal vessels and the background image, complex structural information as well as blurred boundaries ...
Zhongming Luo, Yu Zhang, Lei Zhou, Binge Zhang, Jianan Luo, Haibin Wu   +5 more
doaj   +1 more source

Accurate and reliable segmentation of the optic disc in digital fundus images [PDF]

, 2014
We describe a complete pipeline for the detection and accurate automatic segmentation of the optic disc in digital fundus images. This procedure provides separation of vascular information and accurate inpainting of vessel-removed images, symmetry-based ...
Giachetti, Andrea, Emanuele Trucco, Trucco, Emanuele; id_orcid, Lucia Ballerini, Ballerini, Lucia   +4 more
core   +1 more source

Noninvasive, In Vivo Assessment of Mouse Retinal Structure Using Optical Coherence Tomography [PDF]

, 2009
BACKGROUND: Optical coherence tomography (OCT) is a novel method of retinal in vivo imaging. In this study, we assessed the potential of OCT to yield histology-analogue sections in mouse models of retinal degeneration.
Gesine Huber, Huber, G., Muehlfriedel, Regine, Edda Fahl, Jan Wijnholds, Beck, SC, Remé Charlotte E., Tanimoto, Naoyuki, Tanimoto Naoyuki, Pacal, M, Van de Pavert, S.A., Fischer M. Dominik, Fischer, M.D., Pacal Marek, Christian Grimm, Muehlfriedel Regine, Wenzel, Andreas, Charlotte E Remé, Charlotte E. Remé, Pacal, Marek, Serge A van de Pavert, M. Dominik Fischer, Rod Bremner, Wenzel, A., Bremner Rod, Remé, Charlotte E, Fischer, M Dominik, Susanne C. Beck, Huber, Gesine, Wijnholds, J, Fahl, E, Beck, S.C., Marek Pacal, Grimm Christian, Wenzel, A, Regine Muehlfriedel, Huber Gesine, Wijnholds, Jan, Tanimoto, N, Bremner, R., Reme, C.E., Wijnholds, Jan; https://orcid.org/, Bremner, R, Seeliger Mathias W., Beck, Susanne C., Fischer, M. Dominik, Mathias W Seeliger, Wijnholds Jan, Bremner, Rod, van de Pavert Serge A., M Dominik Fischer, Andreas Wenzel, Mühlfriedel, Regine, Tanimoto, N., Fahl, E., Seeliger, Mathias W, Fischer, Manuel, Beck Susanne C., Seeliger, Mathias W., Remé, Charlotte E., Van De Pavert, SA, Fahl, Edda, Pacal, M., Remé, CE, van de Pavert, Serge A., Beck, Susanne C; https://orcid.org/, Huber, G, Grimm, C., Seeliger, MW, Wenzel Andreas, Fahl Edda, Mathias W. Seeliger, Pavert, S.A. van de, Grimm, C, Grimm, Christian, Grimm, Christian; https://orcid.org/, Muehlfriedel, R., Serge A. Van De Pavert¤b, Wijnholds, J., van de Pavert, Serge A, Susanne C Beck, Fischer, MD, Muehlfriedel, R, Seeliger, M.W., Naoyuki Tanimoto   +84 more
core   +1 more source

Delineation Methodology Advancements of Retinal Vessels

, 2023
Retinal vessel trees play an essential role in clinical decision and quantitative analysis of ophthalmopathy. The changes in the morphological properties of retinal vessels provide accessible information used for diagnosing, screening, and monitoring ...
Challoob, Mohsin
core   +1 more source

Retinal vascular tortuosity in patients with obstructive sleep apnea-chronic obstructive pulmonary disease overlap syndrome

Egyptian Journal of Chest Disease and Tuberculosis, 2018
Background Obstructive sleep apnea (OSA) and chronic obstructive pulmonary disease (COPD) are linked with microvascular changes. Retinal microvasculature can be examined in a direct noninvasive way.
Rabab A El Wahsh, Maha Yousif, Asmaa M Ibrahim   +2 more
doaj   +1 more source

Retinal Health Investigation by Segmentation of Major and Minor Blood Vessels in Fundus Images for Diabetes Patients [PDF]

Journal of Clinical and Diagnostic Research, 2019
Introduction: The Major and Minor blood vessel and the optic disc are the important factors for finding the presence of retinal disease like diabetic retinopathy.
S Poonguzhali, Rekha Chakravarthi
doaj   +1 more source

Mechanisms underlying microglial colonization of developing neural retina in zebrafish

eLife, 2021
Microglia are brain-resident macrophages that function as the first line of defense in brain. Embryonic microglial precursors originate in peripheral mesoderm and migrate into the brain during development.
Nishtha Ranawat, Ichiro Masai
doaj   +1 more source

Stabilization of the retinal vascular network by reciprocal feedback between blood vessels and astrocytes

, 2005
Development of the retinal vasculature is controlled by a hierarchy of interactions among retinal neurons, astrocytes and blood vessels. Retinal neurons release platelet-derived growth factor (PDGFA) to stimulate proliferation of astrocytes, which in ...
Heloise West, Richardson, WD, West, H, William D. Richardson, Fruttiger, M, Marcus Fruttiger   +5 more
core   +1 more source

Discordance in Retinal and Choroidal Vascular Densities in Patients with Type 2 Diabetes Mellitus on Optical Coherence Tomography Angiography

Journal of Ophthalmology, 2021
Purpose. In the present study, the retinal and choroidal vascular densities (VDs) in type 2 diabetes mellitus (DM) patients were analyzed using optical coherence tomography angiography (OCTA). Methods.
Ho Ra, Nam Yeo Kang, Jiyun Song, Junhyuck Lee, Inkee Kim, Jiwon Baek   +5 more
doaj   +1 more source