Arterial Spin Labeling
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Normal-pressure hydrocephalus: A critical review
RESUMO. A hidrocefalia de pressão normal (HPN) é uma síndrome potencialmente reversível marcada por ventrículos cerebrais alargados (ventriculomegalia), declínio cognitivo, apraxia da marcha e incontinência urinária. Revisar criticamente o conceito, a fisiopatologia, o diagnóstico e o tratamento da HPN idiopática e secundária. Os autores acessaram
Dement. neuropsychol.. Publicado em: 18/06/2019
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2. Cerebral blood flow and vasoreactivity in aging: an arterial spin labeling study
Regional cerebral blood flow (CBF) and cerebrovascular reactivity (CVR) in young and elderly participants were assessed using pulsed arterial spin labeling (ASL) and blood oxygenation level-dependent (BOLD) magnetic resonance imaging (MRI) techniques in combination with inhalation of CO2. Pulsed ASL and BOLD-MRI were acquired in seventeen asymptomatic volunt
Braz J Med Biol Res. Publicado em: 23/03/2017
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3. Arterial spin labeling in patients with schizophrenia: a systematic review
Abstract Background: Neuroimaging studies are an invaluable source of information about the physiopathology of schizophrenia. Arterial spin labeling (ASL) is a new magnetic resonance technique (MRI) that is able to effectively evaluate brain function without the use of radiation. Objective: To make a systematic review of studies using ASL to compare restin
Arch. Clin. Psychiatry (São Paulo). Publicado em: 2016-12
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4. Cerebral perfusion evaluation in animal models of hypertension using arterial spin labeling / Avaliação da perfusão sanguínea cerebral em modelos animais de hipertensão utilizando Arterial Spin Labeling
A hipertensão arterial é uma doença que aflinge mais de um quarto da população adulta mundial e mais da metade da população idosa. Ela é o principal fator de risco para doenças cerebrovasculares e o segundo fator de risco, após idade, para os acidentes vasculares cerebrais (AVC) hemorrágico e isquêmico. É também a principal causa de declínio c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/09/2011
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5. Novidades em radiologia: arterial spin labeling, a perfusão por RM sem contraste
Radiologia Brasileira. Publicado em: 2011-02
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6. Cerebral perfusion quantification using arterial spin labeling: applications in vascular territories measurement and functional imaging / Quantificação da perfusão sanguínea cerebral utilizando arterial spin labeling: aplicações em medidas de territórios vasculares e em imagens funcionais
Arterial spin labeling techniques allow to obtain quantitative maps of perfusion non-invasively. Along with other MRI techniques, it has proven useful for diagnosis of a variety of cerebrovascular diseases. Amongst the available basic implementations, the continuous approach employing a dedicated labeling RF coil has the advantages of presenting high signal-
Publicado em: 2008
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7. Does Arterial Spin-labeling MR Imaging–measured Tumor Perfusion Correlate with Renal Cell Cancer Response to Antiangiogenic Therapy in a Mouse Model?
Purpose: To determine whether arterial spin-labeling (ASL) magnetic resonance (MR) imaging findings at baseline and early during antiangiogenic therapy can predict later resistance to therapy.
Radiological Society of North America.
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8. Magnetic resonance imaging of perfusion using spin inversion of arterial water.
A technique has been developed for proton magnetic resonance imaging (MRI) of perfusion, using water as a freely diffusable tracer, and its application to the measurement of cerebral blood flow (CBF) in the rat is demonstrated. The method involves labeling the inflowing water proton spins in the arterial blood by inverting them continuously at the neck regio
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9. Antioxidants and aging: NMR-based evidence of improved skeletal muscle perfusion and energetics
We sought to examine the potential role of oxidative stress on skeletal muscle function with advancing age. Nuclear magnetic resonance (NMR) was employed to simultaneously assess muscle perfusion (arterial spin labeling) and energetics (31P NMR spectroscopy) in the lower leg of young (26 ± 5 yr, n = 6) and older (70 ± 5 yr, n = 6) healthy volunteers follow
American Physiological Society.
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10. Early brain swelling in acute hypoxia
Acute mountain sickness (AMS) and high-altitude cerebral edema share common clinical characteristics, suggesting cerebral swelling may be an important factor in the pathophysiology of AMS. Hypoxia and hypocapnia associated with high altitude are known to exert strong effects on the control of the cerebral circulation, yet how these effects interact during ac
American Physiological Society.
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11. Pulmonary perfusion heterogeneity is increased by sustained, heavy exercise in humans
Exercise presents a considerable stress to the pulmonary system and ventilation-perfusion (V̇a/Q̇) heterogeneity increases with exercise, affecting the efficiency of gas exchange. In particular, prolonged heavy exercise and maximal exercise are known to increase V̇a/Q̇ heterogeneity and these changes persist into recovery. We hypothesized that the spatia
American Physiological Society.