Sökning: "Regional cerebral blood flow"

Visar resultat 31 - 35 av 60 avhandlingar innehållade orden Regional cerebral blood flow.

  1. 31. Mild cognitive impairment neuroimaging markers for early diagnosis of dementia

    Författare :Chaorui Huang; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : This thesis concerns the investigation of mild cognitive impairment (MCI) and Alzheimer's disease (AD) using single photon emission computed tomography (SPECT) and quantitative electroencepholography (qEEG). In study I, The qEEG values were cross-sectionally compared between AD, MCI and controls. LÄS MER

  3. 32. Perfusion MRI of the brain after radiotherapy in patients with glioblastoma – potential and problems

    Författare :Markus Fahlström; Elna-Marie Larsson; Tufve Nyholm; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Sammanfattning : Perfusion Magnetic Resonance Imaging (MRI) is a useful tool in diagnostic evaluation and treatment response assessment in patients with glioblastoma. The standard treatment regimen includes surgical resection, radiotherapy and adjuvant chemotherapy. However, prognosis is poor; relative 5-year survival is 3–5%. LÄS MER

  4. 33. Imaging Chronic Pain and Inflammation : Positron Emission Tomography Studies of Whiplash Associated Disorder

    Författare :Clas Linnman; Mats Fredrikson; Tomas Furmark; Israel Liberzon; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Whiplash Associated Disorder; PET; brain; chronic pain; rCBF; neurokinin-1; Substance P; inflammation; D-deprenyl; fear of movement; kinesiophobia; ; Psychology; Psykologi;

    Sammanfattning : This thesis is on chronic neck pain after a rear impact car injury, so called whiplash associated disorder (WAD). Three empirical studies using positron emission tomography (PET) with different radioligands have been performed. LÄS MER

  5. 34. Autism spectrum disorder in adults : biological dimensions

    Författare :Irina Manouilenko; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Autism Spectrum Disorder (ASD) is a group of neurodevelopmental conditions characterized by difficulties in social interaction, communication and the presence of repetitive or stereotyped behaviors. Previous studies have demonstrated structural and functional abnormalities in different brain regions in ASD. LÄS MER

  7. 35. Characterization of the BOLD signal in functional MRI

    Författare :Tomas Jonsson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : In the last two decades, functional magnetic resonance imaging (fMRI) has become an important and widely used imaging technique for functional brain mapping. However, blood oxygen level dependent (BOLD) technique is quite insensitive and task invoked BOLD signal change at 3T is typically in the order of a few percent. LÄS MER