Cerebral Abnormalities
Mostrando 13-24 de 175 artigos, teses e dissertações.
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13. Diagnosis of regional cerebral blood flow abnormalities using SPECT: agreement between individualized statistical parametric maps and visual inspection by nuclear medicine physicians with different levels of expertise in nuclear neurology
INTRODUCTION: Visual analysis is widely used to interpret regional cerebral blood flow (rCBF) SPECT images in clinical practice despite its limitations. Automated methods are employed to investigate between-group rCBF differences in research studies but have rarely been explored in individual analyses. OBJECTIVES: To compare visual inspection by nuclear phys
Clinics. Publicado em: 2009
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14. Imagem por tensores de difusão em crianças com leucomalácia periventricular / Diffusion tensor imaging in children with periventricular leukomalacia
Conventional magnetic resonance (MR) imaging shows evidence of brain injury and/or maldevelopment in 70-90% of children with cerebral palsy (CP), though its capability to identify specific white matter tract injury is limited. The great variability of white matter lesions in CP already demonstrated by post-mortem studies is thought to be one of the reasons w
Publicado em: 2009
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15. Distúrbios do sono : possível causa de déficit de atenção em crianças e adolescentes com Malformação de Chiari Tipo II
Introduction: In Chiari malformation type II (CMII) patients impairment of the cognitive performance is related to the presence of sleep disorders. In spite of the inclusion of cerebral abnormalities in this malformation a significant percentage of these patients have sufficient cognitive function and social interaction for an independent living. The aim of
Publicado em: 2009
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16. Espectroscopia por ressonância magnética de prótons em epilepsia mioclônica juvenil sugere o comprometimento de uma rede neuronal específica
OBJECTIVES: The neuroanatomical basis and the neurochemical abnormalities that underlay juvenile myoclonic epilepsy (JME) are not fully defined. While the thalamus plays a central role in synchronization of widespread regions of the cerebral cortex during a seizure, emerging evidence suggests that all cortical neurons may not be homogeneously involved. The p
Journal of Epilepsy and Clinical Neurophysiology. Publicado em: 2008-09
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17. Longitudinal magnetic resonance imaging study of schizophrenia and schizophreniform disorder / Avaliação longitudinal de pacientes portadores de esquizofrenia e transtorno esquizofreniforme utilizando ressonância magnética de crânio
Morphometric brain abnormalities have been extensively described in subjects with schizophrenia in many structural magnetic resonance imaging studies, the most consistent findings being ventricular enlargement and gray matter reductions in frontal and temporal neocortices, insula, thalamus and hippocampus/parahippocampal gyri. However, the nature and course
Publicado em: 2008
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18. The use of genetic algorithm to calculate brain perfusion MRI maps and its application to sickle-cell disease. / O uso do algoritmo genético na construção de mapas de perfusão cerebral e sua aplicação em pacientes com anemia falciforme
Magnetic Resonance Imaging (MRI) has become a powerful clinical tool for evaluation of brain anatomy. Several recently techniques have made possible the characterization of brain function via assessment of metabolic parameters. One of these techniques is the cerebral perfusion, which describes passage of blood through the brains vascular network, and al- low
Publicado em: 2008
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19. Avaliação do equilíbrio em pacientes hemiparéticos após acidente vascular encefálico / Balance evaluation in hemiparetic stroke patients
Abnormal balance after stroke can be a consequence of changes in motor, sensory and integrative aspects of motor control. The aims of this study were to describe balance impairments in hemiparetic patients with ischemic strokes in the last 12 months compared to healthy subjects, and to correlate observational scores (Berg Balance Scale and balance subscale o
Publicado em: 2008
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20. Correlation between the neonatal EEG and the neurological examination in the first year of life in infants with bacterial meningitis
OBJECTIVE: To assess the contribution of neonatal electroencephalogram (EEG) and its correlation with the neurological examination at age of 9 months in newborns with bacterial neonatal meningitis. METHOD: Twenty seven infants were studied with positive cerebrospinal fluid (CSF) culture for bacteria. We used the worse EEG result during acute phase of meningi
Arquivos de Neuro-Psiquiatria. Publicado em: 2007-09
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21. Craniotomia descompressiva: análise de fatores prognósticos em 89 pacientes
Decompressive craniotomy (DC) is applied to treat post-traumatic intracranial hypertension (ICH). The best time of its application, prognostic factors and complications is lacking in the actual literature. There are only smal cohort studies. The aim of this paper is to identify prognostic factors and complications of unilateral DC. Eighty nine patients submi
Publicado em: 2007
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22. Repercussão molecular de mutações detectadas em genes ligados a diferentes formas de epilepsia / Molecular characterization of mutations identified in genes related to different epilepsies
A epilepsia acomete uma considerável parcela da população mundial (0,5 ? 1%). Dentre suas causas destacam-se as epilepsias idiopáticas e as malformações corticais, por possuírem uma base genética bem definida. As epilepsias idiopáticas possuem uma etiologia genética, mas na maioria das vezes nenhuma anormalidade estrutural é identificável. Já as
Publicado em: 2007
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23. "Ventriculomegalia cerebral fetal isolada: correlação do diâmetro do átrio com o prognóstico pós-natal" / Isolated fetal cerebral ventriculomegaly: the diameter correlation of the atrium with postnatal prognosis
O objetivo deste estudo foi relacionar a gravidade da ventriculomegalia cerebral fetal isolada com o desenvolvimento neurológico pós-natal. Um total de 36 fetos com diagnóstico ultra-sonográfico de ventriculomegalia cerebral isolada foram acompanhados e avaliados quanto ao seu desenvolvimento neurológico entre 0 e 26 meses. Foi definido como ventriculom
Publicado em: 2006
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24. Estudo do desenvolvimento morfológico fetal e pós-natal dos sulcos cerebrais / Study of the fetal and post-natal morphological development of the sulci of the brain
The study was done through the analysis of 214 brain hemispheres of 107 human brains, with their ages ranging from 12 weeks of gestation to 8 months of postnatal life. The gestational age was calculated from their body weight. The fetuses with congenital abnormalities and or damaged brains were excluded from the study. After the brain fixation with 10% forma
Publicado em: 2006