Functional MRI Examination of Visual Pathways in Patients with Unilateral Optic Neuritis
نویسندگان
چکیده
منابع مشابه
Functional MRI Examination of Visual Pathways in Patients with Unilateral Optic Neuritis
The relations between brain areas involved in vision were explored in 8 patients with unilateral acute optic neuritis using functional magnetic resonance imaging (fMRI) and diffusion tensor imaging (DTI). In all patients monocular stimulation of affected and unaffected eye elicited significantly different activation foci in the primary visual cortex (V1), whereas the foci evoked in the middle t...
متن کاملBaseline T2 MRI texture predicts visual recovery in patients with acute optic neuritis
Introduction Optic neuritis (ON) is a retrobulbar inflammatory injury that occurs frequently in the context of multiple sclerosis (MS). Optic nerve structure and function can be independently quantified, which makes it an ideal system model for MS to understand consequences of central nervous system (CNS) inflammation. MRI texture analysis is a measure of the distribution pattern of image pixle...
متن کاملFunctional loss in the magnocellular and parvocellular pathways in patients with optic neuritis.
PURPOSE To evaluate contrast threshold and contrast gain in patients with optic neuritis under conditions designed to favor mediation by either the inferred magnocellular (MC) or parvocellular (PC) pathway. METHODS Achromatic and chromatic contrast discrimination was measured in 11 patients with unilateral or bilateral optic neuritis and in 18 age-matched controls with normal vision, using ac...
متن کاملInitial Pattern of Optic Nerve Enhancement in Korean Patients with Unilateral Optic Neuritis
PURPOSE The purpose of this study was to demonstrate whether the pattern of optic nerve enhancement in magnetic resonance imaging (MRI) can help to differentiate between idiopathic optic neuritis (ON), neuromyelitis optica (NMO), and multiple sclerosis (MS) in unilateral ON. METHODS An MRI of the brain and orbits was obtained in patients with acute unilateral ON. Patients with ON were divided...
متن کاملبررسی یافته های MRI مغز در بیماران مبتلا به نوریت اپتیک
Background and purpose: Optic neuritis is one of the common causes of unilateral or bilateral visual loss. The most common cause of this disorder is demyelinating disease of the central nervous system (CNS) and most of the patients with optic neuritis will present other signs of multiple sclerosis (MS). The diagnosis depends on the clinical findings, however, magnetic resonance imaging (MRI) is...
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ژورنال
عنوان ژورنال: Radiology Research and Practice
سال: 2012
ISSN: 2090-1941,2090-195X
DOI: 10.1155/2012/265306