Search results for " Brain MRI"

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Neurochemical correlates of brain atrophy in fibromyalgia syndrome: a magnetic resonance spectroscopy and cortical thickness study

2020

(1) Background: Recently, a series of clinical neuroimaging studies on fibromyalgia (FM) have shown a reduction in cortical volume and abnormally high glutamate (Glu) and glutamate + glutamine (Glx) levels in regions associated with pain modulation. However, it remains unclear whether the volumetric decreases and increased Glu levels in FM are related each other. We hypothesized that higher Glu levels are related to decreases in cortical thickness (CT) and volume in FM patients. (2) Methods: Twelve females with FM and 12 matched healthy controls participated in a session of combined 3.0 Tesla structural magnetic resonance imaging (MRI) and single-voxel MR spectroscopy focused on the thalami…

In vivo magnetic resonance spectroscopymedicine.medical_specialtybrain MRIArticlelcsh:RC321-57103 medical and health sciences0302 clinical medicineNeurochemicalAtrophyNeuroimagingGyrusFibromyalgiaInternal medicinemedicinecortical thicknelcsh:Neurosciences. Biological psychiatry. Neuropsychiatry030304 developmental biology0303 health sciencesbusiness.industryGeneral NeuroscienceMR spectroscopyGlutamate receptorSettore MED/37 - Neuroradiologiacortical thicknessmedicine.diseaseSubcortical gray matterEndocrinologymedicine.anatomical_structurefibromyalgia; glutamate excitotoxicity; cortical thickness; brain MRI; chronic pain; MR spectroscopyMR spectroscopy; brain MRI; chronic pain; cortical thickness; fibromyalgia; glutamate excitotoxicity.fibromyalgiaSettore MED/36 - Diagnostica Per Immagini E Radioterapiabusinesschronic pain030217 neurology & neurosurgeryglutamate excitotoxicity
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Noise Filtering Using Edge-Driven Adaptive Anisotropic Diffusion

2008

This paper presents a method aimed to noise removal in MRI (Magnetic Resonance Imaging). We propose an improvement of Perona and Malik's anisotropic diffusion filter. In our schema, the diffusion equation of the filter has been modified to take into account the edges direction, This allows the filter to blur uniform areas, while it better preserves the edges. Both quantitative and qualitative evaluation is presented and the results are compared with other methods.

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniNoise Removal Magnetic Resonance Images Anisotropic Diffusion Brain MRIDiffusion equationNoise measurementComputer scienceAnisotropic diffusionWiener filterComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISIONFilter (signal processing)Edge-preserving smoothingMagnetic fieldAdaptive filtersymbols.namesakeComputer Science::Computer Vision and Pattern RecognitionsymbolsAlgorithm2008 21st IEEE International Symposium on Computer-Based Medical Systems
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