Results 41 to 50 of about 594,306 (298)

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

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

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

Retinal vessel segmentation using the 2-D Gabor wavelet and supervised classification [PDF]

, 2006
—We present a method for automated segmentation of the vasculature in retinal images. The method produces segmentations by classifying each image pixel as vessel or nonvessel, based on the pixel’s feature vector. Feature vectors are composed of the pixel’
Michael J. Cree, João V. B. Soares, Herbert F. Jelinek, Cesar, R.M., Jr., Jorge J. G. Le, Senior Member, Roberto M. Cesar, Jelinek, H.F., Soares, J.V.B., Leandro, J.J.G., Cree, Michael J.   +10 more
core   +1 more source

Retinal Vessel Segmentation Algorithm Based on Residual Convolution Neural Network

Frontiers in Bioengineering and Biotechnology, 2021
Retinal vessels are the only deep micro vessels that can be observed in human body, the accurate identification of which has great significance on the diagnosis of hypertension, diabetes and other diseases.
Shuang Xu, Shuang Xu, Zhiqiang Chen, Zhiqiang Chen, Weiyi Cao, Feng Zhang, Feng Zhang, Bo Tao, Bo Tao   +8 more
doaj   +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

Retinal blood vessels segmentation using classical edge detection filters and the neural network

Informatics in Medicine Unlocked, 2021
Retinal blood vessels analysis is of interest for medical screening, especially in the diagnosis of diabetic retinopathy. In this paper, we propose a new method for the segmentation of blood vessels in retinal photographs.
Beaudelaire Saha Tchinda, Daniel Tchiotsop, Michel Noubom, Valerie Louis-Dorr, Didier Wolf   +4 more
doaj   +1 more source

ALK1 controls hepatic vessel formation, angiodiversity, and angiocrine functions in hereditary hemorrhagic telangiectasia of the liver

Hepatology, EarlyView., 2022
Hepatic endothelial Alk1 signaling protects from development of vascular malformations while maintaining organ‐specific endothelial differentiation and angiocrine portmanteau of the names Wingless and Int‐1 signaling. Abstract Background and Aims In hereditary hemorrhagic telangiectasia (HHT), severe liver vascular malformations are associated with ...
Christian David Schmid, Victor Olsavszky, Manuel Reinhart, Vanessa Weyer, Felix A. Trogisch, Carsten Sticht, Manuel Winkler, Sina W. Kürschner, Johannes Hoffmann, Roxana Ola, Theresa Staniczek, Joerg Heineke, Beate K. Straub, Jens Mittler, Kai Schledzewski, Peter ten Dijke, Karsten Richter, Steven Dooley, Cyrill Géraud, Sergij Goerdt, Philipp‐Sebastian Koch   +20 more
wiley   +1 more source

Choroidal shift in myopic eyes in the 10-year follow-up Beijing eye study

Scientific Reports, 2021
The aim of the study was to assess longitudinal changes in the spatial relationship of the choroidal vasculature to retinal vasculature in myopic eyes.
Jost B. Jonas, Yan Ni Yan, Qi Zhang, Rahul A. Jonas, Ya Xing Wang   +4 more
doaj   +1 more source