نتایج جستجو برای: white matter lesions

تعداد نتایج: 526058  

Journal: :Stroke 2002
David C Steffens K Ranga Rama Krishnan Casey Crump Gregory L Burke

BACKGROUND AND PURPOSE Previous studies have reported an association between cerebrovascular disease and depressive symptoms. The Cardiovascular Health Study (CHS) provides an opportunity to examine the relationship between vascular brain pathology seen on neuroimaging and changes in depressive symptoms. METHODS The sample included 3236 CHS participants who had an MRI brain scan. Demographic ...

2015
Stefano Magon Laura Gaetano M. Mallar Chakravarty Till Sprenger

In their interesting paper, Valverde and colleagues (Valverde et al., 2014) have proposed a new method for filling white matter lesions to reduce their impact on brain tissue classification and compared it with several other available tools/approaches. This comparison aimed at including a method we previously presented at the European Committee for Treatment and Research in Multiple Sclerosis m...

Journal: :AJNR. American journal of neuroradiology 2007
M P Wattjes G G Lutterbey J Gieseke F Träber L Klotz S Schmidt H H Schild

BACKGROUND AND PURPOSE To prospectively determine the sensitivity in the detection of multiple sclerosis (MS) lesions by using double inversion recovery (DIR), fluid-attenuated inversion recovery (FLAIR), and T2-weighted turbo spin-echo (T2 TSE) MR imaging at 3T. METHODS Seventeen patients presenting with a clinically isolated syndrome (CIS) suggestive of MS, 9 patients with definite MS, and ...

Journal: :Brain : a journal of neurology 2006
Alexandra M Hogan Faraneh Vargha-Khadem Dawn E Saunders Fenella J Kirkham Torsten Baldeweg

We examined the impact of discrete white matter lesions in the frontal lobes on event-related potential (ERP) correlates of performance monitoring. We tested the hypothesis that abnormal performance monitoring may result from injury to white matter without evidence of injury to grey matter in the frontal lobes. It was predicted that such lesions may result in disconnection of the lateral and me...

Journal: :AJNR. American journal of neuroradiology 2006
J Takanashi A J Barkovich T Shiihara H Tada M Kawatani H Tsukahara M Kikuchi M Maeda

Four patients with encephalitis/encephalopathy and parenchymal lesions accompanying reversible splenial lesions were retrospectively evaluated. In 3 patients, reversible lesions with transiently reduced diffusion were seen in the splenium and symmetrically in the peripheral frontoparietal white matter, clinical signs and symptoms were mild, and recovery was complete. These and previous observat...

2016
Eiji Matsusue Yoshio Fujihara Yutaka Suto Shotaro Takahashi Kenichiro Tanaka Hiroyuki Nakayasu Kazuhiko Nakamura Toshihide Ogawa

Neuromyelitis optica (NMO) is characterized by attacks of optic neuritis and longitudinally extensive transverse myelitis. Cases positive for aquaporin 4 antibodies are classified to NMO spectrum disorder (NMOSD) which includes cases with optic neuritis, transverse myelitis, or with brain lesions typical of NMO. Our three cases with NMO/NMOSD revealed five imaging features: (i) extensive transv...

Journal: :Brain : a journal of neurology 2011
Marco Duering Nikola Zieren Dominique Hervé Eric Jouvent Sonia Reyes Nils Peters Chahin Pachai Christian Opherk Hugues Chabriat Martin Dichgans

Cerebral small vessel disease is the most common cause of vascular cognitive impairment. It typically manifests with lacunar infarcts and ischaemic white matter lesions. However, little is known about how these lesions relate to the cognitive symptoms. Previous studies have found a poor correlation between the burden of ischaemic lesions and cognitive symptoms, thus leaving much of the variance...

2013
Sérgio Pereira Joana Festa José António Mariz Nuno Sousa Carlos A. Silva

This work is integrated in the MICCAI Grand Challenge: MR Brain Image Segmentation 2013. It aims for the automatic segmentation of brain into Cerebrospinal fluid (CSF), Gray matter (GM) and White matter (WM). The provided dataset contains patients with white matter lesions, which makes the segmentation task more challenging. The proposed algorithm uses multisequence MR images to extract meaning...

Journal: :AJNR. American journal of neuroradiology 1986
R Bejar R W Coen T A Merritt Y Vaucher J Trice R Centeno F Gilles

Eleven preterm infants (gestational ages 27-35 weeks) with echogenic paraventricular white matter identified shortly after birth were studied with serial echoencephalograms to fully delineate the sonographic findings characterizing the pathologic stages of white-matter necrosis. Echoencephalograms were compared with autopsy findings and CT scans. Cerebral function was assessed by electroencepha...

Journal: :AJNR. American journal of neuroradiology 1995
K T Wong R I Grossman J M Boorstein F J Lexa J C McGowan

PURPOSE To characterize with magnetization transfer imaging the pathologic substrate of the nonspecific periventricular hyperintense white matter changes seen on T2-weighted images of elderly patients. METHODS Twenty-one elderly patients with periventricular hyperintense white matter on T2-weighted MR images and eleven control subjects were studied using MT technique. Magnetization transfer r...

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