Results 31 to 40 of about 1,385,547 (382)

White retinal vessels [PDF]

open access: yesPostgraduate Medical Journal, 2005
A 69 year old woman with a history of diabetes mellitus presented with acute abdominal pain, nausea, and vomiting. Clinical, laboratory, and radiological findings were consistent with …
N, Akritidis   +2 more
openaire   +2 more sources

Opening a window to the acutely injured brain: Simultaneous retinal and cerebral vascular monitoring in rats

open access: yesFrontiers in Molecular Neuroscience, 2023
Many recent research projects have described typical chronic changes in the retinal vasculature for diverse neurovascular and neurodegenerative disorders such as stroke or Alzheimer's disease.
Laura Warner   +12 more
doaj   +1 more source

Retinal vessel oxygen saturation and vessel diameter in retinitis pigmentosa [PDF]

open access: yesActa Ophthalmologica, 2014
AbstractPurposeTo assess retinal vessel oxygen saturation and retinal vessel diameter in retinitis pigmentosa.MethodsA retinal oximeter (Oxymap ehf., Reykjavik, Iceland) was used to measure retinal vessel oxygen saturation and vessel diameter in ten patients with retinitis pigmentosa (RP) (mean age 49 years, range 23–71 years).
Thor, Eysteinsson   +3 more
openaire   +2 more sources

A Novel Hybrid Retinal Blood Vessel Segmentation Algorithm for Enlarging the Measuring Range of Dual-Wavelength Retinal Oximetry

open access: yesPhotonics, 2023
The non-invasive measurement of hemoglobin oxygen saturation (SO2) in retinal vessels is based on spectrophotometry and the absorption spectral characteristics of the tissue.
Yongli Xian   +4 more
doaj   +1 more source

An Automated Image Segmentation and Useful Feature Extraction Algorithm for Retinal Blood Vessels in Fundus Images

open access: yesElectronics, 2022
The manual segmentation of the blood vessels in retinal images has numerous limitations. It is very time consuming and prone to human error, particularly with a very twisted structure of the blood vessel and a vast number of retinal images that needs to ...
Aws A. Abdulsahib   +4 more
semanticscholar   +1 more source

Fundus Image Registration Technique Based on Local Feature of Retinal Vessels

open access: yesApplied Sciences, 2021
Feature-based retinal fundus image registration (RIR) technique aligns fundus images according to geometrical transformations estimated between feature point correspondences.
Roziana Ramli   +4 more
doaj   +1 more source

Separable Paravector Orientation Tensors for Enhancing Retinal Vessels

open access: yes, 2022
Robust detection of retinal vessels remains an unsolved research problem, particularly in handling the intrinsic real-world challenges of highly imbalanced contrast between thick vessels and thin ones, inhomogeneous background regions, uneven ...
Challoob, M, Gao, Y, Nikzad, M, Busch, A
core   +1 more source

Successful resolution of coats disease by photodynamic therapy: a case report

open access: yesBMC Ophthalmology, 2018
Background Coats disease is a retinal disease characterized by exudative retinal detachment due to abnormal retinal blood vessels. Coats disease is generally treated using laser photocoagulation and cryotherapy to ablate the abnormal retinal blood ...
Michie Namba   +10 more
doaj   +1 more source

Block Attention and Switchable Normalization Based Deep Learning Framework for Segmentation of Retinal Vessels

open access: yesIEEE Access, 2023
The presence of high blood sugar levels damages blood vessels and causes an eye condition called diabetic retinopathy. The ophthalmologist can detect this disease by looking at the variations in retinal blood vasculature.
Sabri Deari, Ilkay Oksuz, Sezer Ulukaya
doaj   +1 more source

Systematic Development of AI-Enabled Diagnostic Systems for Glaucoma and Diabetic Retinopathy

open access: yesIEEE Access, 2023
With the rapid advancements in artificial intelligence, particularly in machine learning and deep learning, automated disease diagnosis is becoming increasingly feasible.
Khursheed Aurangzeb   +3 more
doaj   +1 more source

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