Results 1 to 10 of about 265,925 (201)

Optic nerve head segmentation [PDF]

open access: yesIEEE Transactions on Medical Imaging, 2004
Reliable and efficient optic disk localization and segmentation are important tasks in automated retinal screening. General-purpose edge detection algorithms often fail to segment the optic disk due to fuzzy boundaries, inconsistent image contrast or ...
Basu, A.   +6 more
core   +5 more sources

Behaviour of Disc Oedema During and After Amiodarone Optic Neuropathy: Case Report [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2014
A 73-year-old woman with atrial fibrillation treated with Amiodarone presented with Optic Disc oedema in right eye (OD). Using Optical Coherence Tomography (OCT) we describe the impact of this neuropathy on Retinal Nerve Fibre Layer (RNFL). At diagnosis
Med. Alejandro Martínez-López-Portillo   +4 more
doaj   +1 more source

Optic Nerve Gliomas

open access: yesJournal of Neurological Surgery Part B: Skull Base, 2021
Abstract Objectives To describe the diagnostic and management features of optic nerve gliomas. Design Literature review. Results Optic nerve gliomas are generally benign in the pediatric age group although they are usually malignant and aggressive in adults. As such, the mechanisms by which these lesions are diagnosed, the
Edward J, Wladis   +2 more
openaire   +3 more sources

Two-year outcomes of ab interno trabeculectomy with the Trabectome for Chinese primary open angle glaucoma: a retrospective multicenter study [PDF]

open access: yesInternational Journal of Ophthalmology, 2018
AIM: To evaluate the 2-year efficacy and safety of ab interno trabeculectomy with the Trabectome in Chinese primary open angle glaucoma (POAG) patients. METHODS: This was a multicenter, retrospective, observational study and included POAG patients with ...
Ya-Long Dang   +7 more
doaj   +1 more source

Bilateral calcification of the optic nerve sheath: A diagnostic dilemma

open access: yesAmerican Journal of Ophthalmology Case Reports, 2021
Purpose: To present a case of symptomatic optic nerve sheath calcification and highlight clues and pitfalls for the final diagnosis: bilateral optic nerve sheath meningioma.
Yngvil Solheim Husum   +6 more
doaj   +1 more source

Response to. comment on optic nerve sheath diameter ultrasound evaluation in intensive care unit: possible role and clinical aspects in neurological critical patients' daily monitoring [PDF]

open access: yes, 2018
Comment on "Optic Nerve Sheath Diameter Ultrasound Evaluation in Intensive Care Unit: Possible Role and Clinical Aspects in Neurological Critical Patients' Daily Monitoring"
Di Piero, V   +6 more
core   +7 more sources

Computed Tomography Density and β-Amyloid Deposition of Intraorbital Optic Nerve May Assist in Diagnosing Mild Cognitive Impairment and Alzheimer’s Disease: A 18F-Flutemetamol Positron Emission Tomography/Computed Tomography Study

open access: yesFrontiers in Aging Neuroscience, 2022
ObjectiveThe aim was to study whether the computed tomography (CT) density and β-amyloid (Aβ) level of intraorbital optic nerve could assist in diagnosing mild cognitive impairment (MCI) and Alzheimer’s disease (AD).MethodsA total of sixty subjects were ...
Han Wu   +16 more
doaj   +1 more source

Neuroimaging Features of Optic Nerve Hemangioblastoma Identified by Conventional and Advanced Magnetic Resonance Techniques: A Case Report and Literature Review

open access: yesFrontiers in Oncology, 2021
Optic nerve hemangioblastoma is a very rare benign tumor with only 39 reported cases by now. It appears to be hyperintense on T2-weighted images with a significant enhancement on contrast scans, which are similar to glioma and meningioma. Due to the lack
Meihan Duan   +5 more
doaj   +1 more source

Computational approaches for the reconstruction of optic nerve fibers along the visual pathway from medical images: a comprehensive review

open access: yesFrontiers in Neuroscience, 2023
Optic never fibers in the visual pathway play significant roles in vision formation. Damages of optic nerve fibers are biomarkers for the diagnosis of various ophthalmological and neurological diseases; also, there is a need to prevent the optic nerve ...
Richu Jin   +11 more
doaj   +1 more source

A Jones matrix formalism for simulating three-dimensional polarized light imaging of brain tissue [PDF]

open access: yes, 2015
The neuroimaging technique three-dimensional polarized light imaging (3D-PLI) provides a high-resolution reconstruction of nerve fibres in human post-mortem brains.
Amunts, Katrin   +5 more
core   +10 more sources

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