Sökning: "structural MRI"

Visar resultat 11 - 15 av 78 avhandlingar innehållade orden structural MRI.

  1. 11. Deriving biomarkers from computed tomography using deep learning

    Författare :Meera Srikrishna; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; CT; MRI; convoluted neural networks; deep learning; Dementia; Alzheimer s disease; Normal pressure hydrocephalus; brain segmentation;

    Sammanfattning : X-ray computed tomography (CT) and magnetic resonance imaging (MRI) are widely used structural neuroimaging modalities. For brain atrophy assessment and volumetric quantification using automated methods, MRI is the preferred modality due to its superior soft tissue contrast. LÄS MER

  3. 12. Towards new tools for clinical evaluation and visualization of tumor growth in patients with glioma

    Författare :Kenney Roy Roodakker; Anja Smits; Anne-Marie Landtblom; Elna-Marie Larsson; Jan J. Heimans; Uppsala universitet; []
    Nyckelord :PROX1; Histology; MRI; PET; Epilepsy; Co-registration; Neurology; Neurologi;

    Sammanfattning : Gliomas are derived from glial cells and are the most common type of primary brain tumors in adults. Gliomas are classified by the World Health Organization (WHO) according to their malignancy grade and histological and molecular features. Malignancy grades range from I to IV. WHO grade I tumors are benign tumors, mostly occurring in childhood. LÄS MER

  4. 13. On electroconvulsive therapy in depression : Clinical, cognitive and neurobiological aspects

    Författare :Pia Nordanskog; Maria Engström; Aki Johanson; Elna-Marie Larsson; Örjan Smedby; Tom Bolwig; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; ECT; electroconvulsive therapy; depression; MRI; cognitive; hippocampus;

    Sammanfattning : Electroconvulsive therapy (ECT) is used worldwide to treat severe mental disorders. The most common mental disorder, and the third leading cause of disease burden in the world is depression. The clinical efficacy of ECT for severe depression is well-established. LÄS MER

  5. 14. Multi-functional Hyaluronan Based Biomaterials for Biomedical Applications

    Författare :Xia Yang; Dmitri Ossipov; Matthias Lutolf; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; hyaluronan; biomaterials functionalizations; biomedical applications; orthogonal chemistry; drug delivery; tissue regeneration; MRI; Kemi med inriktning mot polymerkemi; Chemistry with specialization in Polymer Chemistry;

    Sammanfattning : This thesis presents strategies for constructing multi-functional biomaterials based on hyaluronan (HA) derivatives for various biomedical applications, such as drug delivery, tissue regeneration, and imaging biomaterials. The aim of this study is to improve the functionalities of HA biomaterials as well as simplify the preparation procedures. LÄS MER

  7. 15. Radiotherapy Gel Dosimetry: Development and Application of Normoxic Polymer Gels

    Författare :Helen Gustafsson; Malmö Medicinsk strålningsfysik; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Clinical physics; radiology; tomography; medical instrumentation; Klinisk fysiologi; tomografi; medicinsk instrumentering; Radiofarmaceutisk teknik; Radiopharmaceutical technology; proton; LET; FT Raman spectroscopy; MRI; normoxic gel; IMRT; 3D verification; polymer gel dosimetry; radiologi;

    Sammanfattning : In many radiotherapy applications, true three-dimensional dosimetry with good spatial resolution that can be achieved in a single measurement would be of great value. Polymer gel dosimetry fulfils many of the demands on such a system. In this study, methods to facilitate the implementation of gel dosimetry have been investigated. LÄS MER