Brain Image
Mostrando 1-12 de 122 artigos, teses e dissertações.
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1. Quantitative MRI data in Multiple Sclerosis patients: a pattern recognition study
Abstract Introduction Multiple Sclerosis (MS) is a neurodegenerative disease characterized by inflammatory demyelination in the central nervous system. Quantitative Magnetic Resonance Imaging (qMRI) enables a detailed characterization of brain tissue, but generates a large number of numerical results. In this study, we elucidated the main qMRI techniques a
Res. Biomed. Eng.. Publicado em: 28/05/2018
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2. Populational brain models of diffusion tensor imaging for statistical analysis: a complementary information in common space
Abstract Introduction: The search for human brain templates has been progressing in the past decades and in order to understand disease patterns a need for a standard diffusion tensor imaging (DTI) dataset was raised. For this purposes, some DTI templates were developed which assist group analysis studies. In this study, complementary information to the most
Res. Biomed. Eng.. Publicado em: 24/08/2017
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3. Volumetric T1 and T2 magnetic resonance brain toolkit for relaxometry mapping simulation
Abstract Introduction Relaxometry images are an important magnetic resonance imaging (MRI) technique in the clinical routine. Many diagnoses are based on the relaxometry maps to infer abnormal state in the tissue characteristic relaxation constant. In order to study the performance of these image processing approaches, a controlled simulated environment is
Res. Biomed. Eng.. Publicado em: 10/10/2016
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4. Pituitary metastasis of lung neuroendocrine carcinoma: case report and literature review
SUMMARY Metastasis to the pituitary gland is an unusual situation in clinical practice, but the frequency thereof is increasing due to the increased survival of cancer patients, and greater availability of imaging. In most cases, they are found between the sixth and seventh decades of life, as determined in image examination of patients with known malignant
Arch. Endocrinol. Metab.. Publicado em: 2015-12
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5. The thickness of posterior cortical areas is related to executive dysfunction in Alzheimer's disease
OBJECTIVE: To establish whether alterations of brain structures in Alzheimer's disease are associated with executive dysfunction. METHODS: Nineteen patients with Alzheimer's disease and 22 older control subjects underwent a comprehensive evaluation. The clock drawing test, digit span test, executive motor function test, Behavioral Assessment of the Dysexe
Clinics. Publicado em: 2014-01
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6. Study of the ureter structure in anencephalic fetuses
Purpose The objective of this paper is to analyze the structure of the ureter in normal and anencephalic human fetuses. Materials and Methods We studied 16 ureters from 8 human fetuses without congenital anomalies aged 16 to 27 weeks post-conception (WPC) and 14 ureters from 7 anencephalic fetuses aged 19 to 33 WPC. The ureters were dissected and embedded
Int. braz j urol.. Publicado em: 2013-12
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7. Performance assessment of the single photon emission microscope: high spatial resolution SPECT imaging of small animal organs
The single photon emission microscope (SPEM) is an instrument developed to obtain high spatial resolution single photon emission computed tomography (SPECT) images of small structures inside the mouse brain. SPEM consists of two independent imaging devices, which combine a multipinhole collimator, a high-resolution, thallium-doped cesium iodide [CsI(Tl)] col
Braz J Med Biol Res. Publicado em: 06/11/2013
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8. Efeito do laser de baixa potência após a expansão rápida da maxila, na ativação de regiões cerebrais relacionadas à nocicepção / Effects of the low-level laser therapy, after experimental rapid maxillary expansion, in brain regions involved in nociception
O laser de baixa potência vem sendo utilizado em Odontologia com diversos objetivos, como diminuir o tempo de reparação de tecidos moles e duros e, atualmente, alguns profissionais tem utilizado esta ferramenta para o controle clínico da dor. O presente trabalho in vivo teve como objetivo avaliar quantitativamente os efeitos do laser de baixa potência (
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/06/2012
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9. Maternal separation during breastfeeding induces changes in the number of cells immunolabeled to GFAP
The mother-child relationship is fundamental to the establishment and maintenance of synaptic networks and physiological and emotional development. Animal models including maternal separation have been used to study changes at behavioral and neurobiochemical levels. Due to the relevance of glial cells during development, our aim was to determine if short per
Psychol. Neurosci.. Publicado em: 2012-12
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10. Correlação clínico-laboratorial e de imagem do lúpus eritematoso sistêmico e da esclerose múltipla no HC/FM/UFG em Goiânia/Goiás de 2009 a 2010: ênfase nas manifestações neurológicas / Correlation of clinical-laboratorial and image of lupus erythematosus and multiple sclerosis in HC/FM/UFG at Goiânia/Goiás, 2009 to 2010: emphasis on neurological manifestations
Systemic Lupus Erythematosus - LES is an autoimmune disease involving multiple systems. In the Central nervous system-SNC is one of his more severe manifestations. One of the frames of Lupus neuropsychiatric - LES-NP, is a Demyelinating Syndrome - SD. SD in rare cases, may be the first manifestation of LES, resembling multiple sclerosis - MS in their symptom
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/09/2011
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11. Automatic hippocampus segmentation through similarity cloud / Segmentação da estrutura cerebral hipocampo por meio de nuvem de similaridade
The hippocampus is a particular structure that plays a main role in human memory systems. Tissue modifications of the hippocampus lead to neurodegenerative diseases as epilepsy, multiple sclerosis, and dementia, among others. To measure hippocampus atrophy, it is crucial to get its isolated representation from the whole brain volume. Separating the hippocamp
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/08/2011
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12. Modelagem matemática-computacional da conectividade cerebral em ressonância magnética funcional para o estudo do estado de repouso / fMRI Resting-state Graph Index Analysis in Classical Neural Systems
Esta dissertação desenvolve e aplica métodos para caracterizar regiões cerebrais durante o estado de repouso. Utilizam-se grafos para representar a inter-dependência temporal de sinais de ressonância magnética funcional provenientes de regiões cerebrais distintas. Vértices representam regiões cerebrais e arestas representam a conectividade funciona
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/07/2011