fluorine/acidente vascular cerebral

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Surface modification of stainless steel by plasma-based fluorine and silver dual ion implantation and deposition.

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The aims of this study were to modify dental device surface with fluorine and silver and to examine the effectiveness of this new surface modification method. Stainless steel plates were modified by plasma-based fluorine and silver ion implantation-deposition method. The surface characteristics and

Fluorine-18-fluorodeoxyglucose positron emission tomography may predict the outcome in patients with asymptomatic mild stenosis of internal carotid artery--case report.

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A 47-year-old male presented with asymptomatic mild (45%) internal carotid artery (ICA) stenosis associated with familial hypercholesterolemia. Fluorine-18-fluorodeoxyglucose ([(18)F]FDG) positron emission tomography (PET) showed that the carotid plaque had high uptake of [(18)F]FDG on the initial

Cerebellar glucose consumption in normal and pathologic states using fluorine-FDG and PET.

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We studied cerebellar metabolism in 118 subjects including young and elderly controls and patients suffering from stroke, supratentorial brain tumor and Alzheimer's disease using fluorine-18 fluorodeoxyglucose ([18F]FDG) and position emission tomography (PET). Alzheimer's disease and normal aging

Synthesis and neuroprotective effects of the fluorine substituted salidroside analogues in the PC12 cell model exposed to hypoglycemia and serum limitation.

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Salidroside (Sal) is a natural antioxidant extracted from the root of Rhodiola rosea L., a traditional Chinese medicinal plant, which elicits neuroprotective effects in the treatment of ischemic stroke. In an attempt to improve its neuroprotective effects, fluorine substituted Sal analogues were

Evidence for transhemispheric diaschisis in unilateral stroke.

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Nineteen patients with strictly unilateral ischemic stroke as determined by clinical examination, computed tomography, magnetic resonance imaging, and standard angiography underwent cerebral blood flow (CBF) analysis using fluorine 18 fluoromethane and positron emission tomography. Mean flow values

Post-stroke changes in cortical 5-HT2 serotonergic receptors.

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Fluorine-18-setoperone PET imaging was used to investigate serotonergic 5-HT2-specific binding in unlesioned cerebral cortex in stroke patients. METHODS Seventeen stroke patients (mean age 50 +/- 31 yr) with right (n = 9) or left (n = 8) chronic stroke (middle or anterior cerebral artery territory)

In Vivo Evaluation of Radiofluorinated Caspase-3/7 Inhibitors as Radiotracers for Apoptosis Imaging and Comparison with [18F]ML-10 in a Stroke Model in the Rat.

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OBJECTIVE The first biological evaluation of two potent fluorine-18 radiolabelled inhibitors of caspase-3/7 was achieved in a cerebral stroke rat model to visualize apoptosis. METHODS In vivo characteristics of isatins [(18)F]-2 and [(18)F]-3 were studied and compared by μPET to previously described

Contralateral flow reduction in unilateral stroke: evidence for transhemispheric diaschisis.

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Using clinical presentation, angiography, computed tomography, and nuclear magnetic resonance imaging, 7 patients were identified who had strictly unilateral hemispheric infarction and unilateral cerebrovascular disease. In 6, cerebral blood flow measured by fluorine-18-fluoromethane inhalation and

Characterisation of the timing of binding of the hypoxia tracer FMISO after stroke.

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The hypoxia tracer fluorine-18 fluoromisonidazole ([18F]FMISO) and its tritiated counterpart ([(3)H]FMISO) have been used as markers of potentially salvageable brain (ischemic penumbra) after stroke. In experimental models, the dynamics and half-life of [3H]FMISO allow concurrent histology after 24

Neuroimaging in cerebrovascular disorders: measurement of cerebral physiology after stroke and assessment of stroke recovery.

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Nuclear medicine imaging can play an important role in the diagnosis of stroke risk, the differential diagnosis of vascular and parenchymal cerebral abnormalities, and the understanding and management of poststroke recovery. Radionuclide brain-imaging methods can assess hemodynamic, vascular, and

Fluorine-18 radiolabeling of a nitrophenyl sulfoxide and its evaluation in an SK-RC-52 model of tumor hypoxia.

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The significance of imaging hypoxia with the positron emission tomography ligand [(18) F]FMISO has been demonstrated in a variety of cancers. However, the slow kinetics of [(18) F]FMISO require a 2-h delay between tracer administration and patient scanning. Labeled chloroethyl sulfoxides have shown

Fluorine-18-fluoromisonidazole radiation dosimetry in imaging studies.

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Fluoromisonidazole (FMISO), labeled with the positron emitter 18F, is a useful hypoxia imaging agent for PET studies, with potential applications in patients with tumors, cardiovascular disease and stroke. METHODS Radiation doses were calculated in patients undergoing imaging studies to help define

Blood flow reactivity to hypercapnia in strictly unilateral carotid disease: preliminary results.

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To show relationship between degree of carotid arterial stenosis and cerebral blood flow reactivity (RES%) to induced hypercapnia, fluorine-18-fluoromethane and positron emission tomography (PET) was used to study 18 patients with carotid distribution transient ischaemic attacks (TIA), all free of

Hemodynamic and metabolic effects of cerebral revascularization.

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Pre- and postoperative positron emission tomography (PET) was performed in six patients undergoing extracranial to intracranial bypass procedures for the treatment of symptomatic extracranial carotid occlusion. The six patients were all men, aged 52 to 68 years. Their symptoms included transient

Gene expression levels of matrix metalloproteinases in human atherosclerotic plaques and evaluation of radiolabeled inhibitors as imaging agents for plaque vulnerability.

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BACKGROUND Atherosclerotic plaque rupture is the primary cause for myocardial infarction and stroke. During plaque progression macrophages and mast cells secrete matrix-degrading proteolytic enzymes, such as matrix metalloproteinases (MMPs). We studied levels of MMPs and tissue inhibitor of

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