Results 21 to 30 of about 119,689 (219)

Effect of delayed acquisition times on Gadolinium-enhanced MRI of the presumably normal canine brain [PDF]

open access: yes, 2011
A delay in imaging following intravenous contrast medium administration has been recommended to reduce misdiagnoses. However, the normal variation of contrast enhancement in dogs following a delay has not been characterized.
Brannan, N.   +5 more
core   +1 more source

Vascular Response to Sildenafil Citrate in Aging and Age-Related Macular Degeneration. [PDF]

open access: yes, 2019
Age-related macular degeneration (AMD) - the leading cause of vision loss in the elderly - share many risks factors as atherosclerosis, which exhibits loss of vascular compliance resulting from aging and oxidative stress.
Agrawal, Rupesh   +8 more
core   +2 more sources

Effect of Uveal Melanocytes on Choroidal Morphology in Rhesus Macaques and Humans on Enhanced-Depth Imaging Optical Coherence Tomography. [PDF]

open access: yes, 2016
PurposeTo compare cross-sectional choroidal morphology in rhesus macaque and human eyes using enhanced-depth imaging optical coherence tomography (EDI-OCT) and histologic analysis.MethodsEnhanced-depth imaging-OCT images from 25 rhesus macaque and 30 ...
Cunefare, David   +7 more
core   +1 more source

Automated segmentation of choroidal layers from 3-dimensional macular optical coherence tomography scans [PDF]

open access: yesarXiv, 2021
Background: Changes in choroidal thickness are associated with various ocular diseases and the choroid can be imaged using spectral-domain optical coherence tomography (SDOCT) and enhanced depth imaging OCT (EDIOCT). New Method: Eighty macular SDOCT volumes from 80 patients were obtained using the Zeiss Cirrus machine.
arxiv  

Analysis of retinal and choroidal images measured by laser Doppler holography [PDF]

open access: yes, 2019
Laser Doppler holography (LDH) is a full-field imaging technique that was recently used in the human eye to reveal blood flow contrasts in the retinal and choroidal vasculature non-invasively, and with high temporal resolution. We here demonstrate that the ability of LDH to perform quantitative flow measurements with high temporal resolution enables ...
arxiv   +1 more source

Evaluation of an automated choroid segmentation algorithm in a longitudinal kidney donor and recipient cohort [PDF]

open access: yesarXiv, 2023
Purpose: To evaluate the performance of an automated choroid segmentation algorithm in optical coherence tomography (OCT) data using a longitudinal kidney donor and recipient cohort. Methods: We assessed 22 donors and 23 patients requiring renal transplantation over up to 1 year post-transplant.
arxiv  

Klotho controls the brain-immune system interface in the choroid plexus. [PDF]

open access: yes, 2018
Located within the brain's ventricles, the choroid plexus produces cerebrospinal fluid and forms an important barrier between the central nervous system and the blood.
Ho, Kaitlyn   +7 more
core  

Imaging of the Lamina Cribrosa using Swept-Source Optical Coherence Tomography. [PDF]

open access: yes, 2012
The lamina cribrosa (LC) is the presumed site of axonal injury in glaucoma. Its deformation has been suggested to contribute to optic neuropathy by impeding axoplasmic flow within the optic nerve fibers, leading to apoptosis of retinal ganglion cells. To
Mansouri, Kaweh   +2 more
core   +2 more sources

THE ETIOLOGY OF CHOROIDITIS. [PDF]

open access: yesJAMA: The Journal of the American Medical Association, 1905
The following observations regarding the causal relations of choroiditis with rubeola are the results of observations of numerous cases of this disease which have come under my observation. It has always seemed to the writer that the pathology of choroiditis has not been so definitely established or defined as to enable the practitioner to feel that he
openaire   +3 more sources

An open-source deep learning algorithm for efficient and fully-automatic analysis of the choroid in optical coherence tomography [PDF]

open access: yesarXiv, 2023
Purpose: To develop an open-source, fully-automatic deep learning algorithm, DeepGPET, for choroid region segmentation in optical coherence tomography (OCT) data. Methods: We used a dataset of 715 OCT B-scans (82 subjects, 115 eyes) from 3 clinical studies related to systemic disease.
arxiv  

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