نتایج جستجو برای: ms lesions

تعداد نتایج: 289523  

Multiple sclerosis (MS) is a complex disease which is correlated with increasing inflammatory factors, demyelination and axonal loss. In this auto-immune disease, Neuroinflammation is mediated by different types of T cells with macrophage/microglial activation and B cells involvement that interact in a collaborative manner. Focal inflammation is the main cause for the onset of relapses and coul...

2014
Kai-Chen Wang Kuan-Hsiang Lin Tzu-Chi Lee Chao-Lin Lee Shao-Yuan Chen Shyi-Jou Chen Li-Te Chin Ching-Piao Tsai

Interferon-beta (IFN-β) treatment may not be effective in neuromyelitis optica (NMO). Whether the poor response to IFN-β is related to long spinal cord lesions (LSCL) or the NMO disease entity itself is unclear. We evaluated the spinal cord involvement of patients with multiple sclerosis (MS) and NMO, as well as the response after receiving IFN-β. Forty-nine MS and 21 NMO patients treated with ...

2015
Lucy Matthews Christian Enzinger Franz Fazekas Alex Rovira Olga Ciccarelli Maria Teresa Dotti Massimo Filippi Jette L Frederiksen Antonio Giorgio Wilhelm Küker Carsten Lukas Maria A Rocca Nicola De Stefano Ahmed Toosy Tarek Yousry Jacqueline Palace

BACKGROUND Leber's hereditary optic neuropathy (LHON) and a multiple sclerosis (MS)-like illness appear to coexist 50 times more frequently than would be expected by chance. This association of LHON and MS (LMS) raises an important question about whether there could be a common pathophysiological mechanism involving mitochondrial dysfunction. OBJECTIVE The primary aim was to define MRI featur...

2015
Chuntao Lai Qinglin Chang Guohong Tian Jiawei Wang Hongxia Yin Wu Liu Fernando de Castro

Longitudinal studies have shown that brain white matter lesions are strong predictors of the conversion of unilateral optic neuritis to multiple sclerosis (MS) in Caucasian populations. Consequently brain MRI criteria have been developed to improve the prediction of the development of clinically definite multiple sclerosis (CDMS). In Asian populations, optic neuritis may be the first sign of cl...

Journal: :European Journal of Neurology 2021

Background and purpose There has been an increasing interest in chronic active multiple sclerosis (MS) lesions as a new magnetic resonance imaging (MRI) marker of disease progression. Chronic are characterized by progressive tissue matrix damage, axonal loss inflammation. Sodium (23Na) MRI provides biochemical cell integrity viability quantitative manner. The aim this study was to investigate w...

Journal: :AJNR. American journal of neuroradiology 1999
L J Bagley R I Grossman S L Galetta G P Sinson M Kotapka J C McGowan

BACKGROUND AND PURPOSE Magnetization transfer imaging provides information about the structural integrity of macromolecular substances, such as myelin. Our objective was to use this imaging technique and contour plotting to characterize and to define the extent of white matter lesions in multiple sclerosis and traumatic brain injury. METHODS Magnetization transfer imaging was performed of 30 ...

Journal: :AJNR. American journal of neuroradiology 2016
S Galler J-P Stellmann K L Young D Kutzner C Heesen J Fiehler S Siemonsen

BACKGROUND AND PURPOSE Identification of lesions in specific locations gains importance in multiple sclerosis imaging diagnostic criteria. In clinical routine, axial scans are usually exclusively obtained to depict the cervical spinal cord or used to confirm suspected lesions on sagittal scans. We sought to evaluate the detection rate for MS lesions on axial T2WI scans with full spinal cord cov...

2012
Hassan Khotanlou Mahlagha Afrasiabi

This paper presents a new feature selection approach for automatically extracting multiple sclerosis (MS) lesions in three-dimensional (3D) magnetic resonance (MR) images. Presented method is applicable to different types of MS lesions. In this method, T1, T2, and fluid attenuated inversion recovery (FLAIR) images are firstly preprocessed. In the next phase, effective features to extract MS les...

Journal: :AJNR. American journal of neuroradiology 1999
G Mastronardo M A Rocca G Iannucci C Pereira M Filippi

We describe the dynamics and the nature of the presymptomatic phase of multiple sclerosis (MS) in a patient for whom MR abnormalities suggestive of MS were found before the development of clinical symptoms. The patient was monitored with serial monthly MR imaging of the brain and spinal cord for 5 months. Disease activity during the presymptomatic phase showed imaging characteristics comparable...

Journal: :Journal of neurology, neurosurgery, and psychiatry 1992
P J Tienari O Salonen J Wikström L Valanne J Palo

Subclinical demyelinating lesions may occur in the brains of asymptomatic individuals, and the first-degree relatives of multiple sclerosis (MS) patients are at particular risk. Clinical and MRI examinations were performed in nine sibships from families with two or more cases of MS. These included 14 patients with clinically definite MS, three patients with clinically probable MS, and 27 asympt...

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