Sökning: "white-matter lesions"

Visar resultat 1 - 5 av 43 avhandlingar innehållade orden white-matter lesions.

  1. 1. Volumetric assessment of hippocampus and cerebral white matter lesions in structural MRI

    Författare :Erik Olsson; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; structural MRI; white matter lesions; hippocampal volumetry; reliability; mild cognitive impairment; dementia; low dose radiation;

    Sammanfattning : Assessment in structural MRI like hippocampal volumetry and white matter lesion (WML) assessment is receiving widespread attention and recommen-dation as important research and diagnostic tools. The aim in this thesis is to contribute to enhanced reliability and validity in structural MRI assessment. LÄS MER

  3. 2. Biophysical modelling in diffusion MRI: The role of tissue microstructure and water exchange

    Författare :Markus Nilsson; Lund Medicinsk strålningsfysik; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Diffusion; MRI; tissue microstructure; water exchange; Monte Carlo simulations; white matter;

    Sammanfattning : Diffusion MRI is widely used to study brain structure in vivo. While this technique is often applied to investigations of brain connectivity, it can also be used to infer specific information about the tissue microstructure; for example, to estimate the axon diameter. LÄS MER

  4. 3. Clinical evaluation and implications of left atrial remodeling in atrial fibrillation : From silent cerebral lesions and atrial stunning to novel electrocardiographic tools for prediction of arrhythmia outcome

    Författare :Panagiotis Arvanitis; Carina Blomström-Lundqvist; Mårten Rosenqvist; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Atrial fibrillation; left atrial remodeling; recurrence; new-onset; silent cerebral lesions; white matter hyperintensities; cardioversion; pulmonary vein isolation; risk factors; electrocardiographic predictors; P-wave indices; machine learning; predictive models; Covid-19;

    Sammanfattning : Atrial fibrillation (AF) is the most common cardiac arrhythmia. Left atrial (LA) remodeling and reverse remodeling are associated with cerebral involvement and cognitive function (CF) changes. Risk stratification for AF related outcomes is essential in the management of patients with AF. LÄS MER

  5. 4. Epidemiological, clinical anf pathogenetic studies of acute intermittent porphyria

    Författare :Ingemar Bylesjö; Christer Andersson; Pertti Mustajoki; Umeå universitet; []
    Nyckelord :Medicine; Acute intermittent porphyria; epilepsy; melatonin; diabetes mellitus; white-matter lesions; symptoms; Medicin; Medicine; medicin;

    Sammanfattning : Porphyrias are inherited metabolic disorders characterised by an impairment of heme biosynthesis. Acute intermittent porphyria (AIP) is the most common of the acute porphyrias in Sweden. Acute attacks of AIP are characterised by neuro-psychiatric symptoms, including epileptic seizures. LÄS MER

  7. 5. Craniopharyngioma. Morbidity and Structural Changes in the Brain

    Författare :Sigríður Bára Fjalldal; Lund Medicin; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; craniopharyngioma; hypothalamus; hypothalamic obesity; metabolism; cognition; magnetic resonance imaging; diffusion tensor imaging; white matter lesions; morbidity; cardiovascular risk; craniofaryngiom; hypotalamus; hypotalamisk fetma; ämnesomsättning; kognition; magnetkameraundersökning; vitsubstansförändringar; dödlighet; hjärt-kärlsjukdomar;

    Sammanfattning : Hypothalamus (HT) is a brain structure which serves as a coordination center for several vital body functions. Craniopharyngioma (CP) is a pituitary tumor with high morbidity, primarily due to HT lesion. LÄS MER