Results 31 to 40 of about 589,793 (294)

Automated vessel density detection in fluorescein angiography images correlates with vision in proliferative diabetic retinopathy

open access: yesPLoS ONE, 2020
Purpose To investigate the correlation between quantifiable vessel density, computed in an automated fashion, from ultra-widefield fluorescein angiography (UWFFA) images from patients with proliferative diabetic retinopathy (PDR) with visual acuity and ...
Mohammad H. Bawany   +6 more
doaj   +2 more sources

Quantitative assessment of retinal thickness and vessel density using optical coherence tomography angiography in patients with Alzheimer's disease and glaucoma.

open access: yesPLoS ONE, 2021
PurposeAssessment and a direct comparison of retinal vessel density with the thickness of inner retinal layer (IRL) and outer retinal layer (ORL) in the same regions of the macula in subjects with Alzheimer's disease (AD) and primary open-angle glaucoma (
Przemyslaw Zabel   +8 more
doaj   +1 more source

Foliar and wood traits covary along a vertical gradient within the crown of long-lived light-demanding species of the Congo Basin semi-deciduous forest [PDF]

open access: yes, 2019
Plant functional traits have shown to be relevant predictors of forest functional responses to climate change. However, the trait-based approach to study plant performances and ecological strategies has mostly been focused on trait comparisons at the ...
Beeckman, Hans   +8 more
core   +2 more sources

Xylem plasticity in Pinus pinaster and Quercus ilex growing at sites with different water availability in the Mediterranean region: relations between Intra-Annual Density Fluctuations and environmental conditions. [PDF]

open access: yes, 2020
Fluctuations in climatic conditions during the growing season are recorded in Mediterranean tree-rings and often result in intra-annual density fluctuations (IADFs).
Balzano, A.   +3 more
core   +1 more source

3D Retinal Vessel Density Mapping With OCT-Angiography

open access: yesIEEE Journal of Biomedical and Health Informatics, 2020
Optical Coherence Tomography Angiography (OCTA) is a novel, non-invasive imaging modality of retinal capillaries at micron resolution. Recent studies have correlated macular OCTA vascular measures with retinal disease severity and supported their use as a diagnostic tool.
Mona Sharifi Sarabi   +7 more
openaire   +3 more sources

Phenylephrine Affects Peripapillary Retinal Vasculature—an Optic Coherence Tomography Angiography Study

open access: yesFrontiers in Physiology, 2017
Purpose: To evaluate and compare the effect of topical mydriatic eye drops (0.5% tropicamide alone, and a 0.5% tropicamide/0.5% phenylephrine mixture) on the retinal perfusion using optic coherence tomography angiography (OCTA).Methods: The perfused ...
Jingyi Cheng   +11 more
doaj   +1 more source

Early neurovascular changes in the retina in preclinical diabetic retinopathy and its relation with blood glucose

open access: yesBMC Ophthalmology, 2021
Background To investigate the changes in retinal nerve fiber layer thickness and macular blood flow density during the preclinical stage of diabetic retinopathy and their relationship with blood glucose. Methods In this cross-sectional study, 97 diabetic
Hui Li   +5 more
doaj   +1 more source

Optimisation of out-vessel magnetic diagnostics for plasma boundary reconstruction in tokamaks

open access: yes, 2013
To improve the low frequency spectrum of magnetic field measurements of future tokamak reactors such as ITER, several steady state magnetic sensor technologies have been considered.
Romero, J. A., Svensson, J.
core   +1 more source

New molecular mediators in tumor angiogenesis [PDF]

open access: yes, 2007
Angiogenesis is essential for tumor growth and progression. It has been demonstrated that tumor growth beyond a size 1 to 2 mm3 requires the induction of new vessels.
Beecken, Wolf-Dietrich   +2 more
core   +1 more source

Higher Vessel Densities in Retinoblastoma with Local Invasive Growth and Metastasis [PDF]

open access: yesThe American Journal of Pathology, 2004
In this study, the importance of angiogenesis (the growth of new blood vessels from existing ones) for the growth of retinoblastoma was investigated by a retrospective immunohistochemical analysis. An individual vessel index for each tumor was determined using the endothelial-specific antibody CD 31 for vessel staining.
Rößler, Jochen   +7 more
openaire   +3 more sources

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