Sökning: "diffusion weighted imaging"

Visar resultat 36 - 40 av 43 avhandlingar innehållade orden diffusion weighted imaging.

  1. 36. Penumbra oxygen metabolism and acute neuroinflammation in ischemic stroke : MRI and PET imaging of a M2 occlusion model in rat

    Författare :Philip Little; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Acute ischemic stroke (AIS) is caused by the sudden occlusion of a major artery of the brain, and results in infarction and severe ischemia within affected brain regions. If ischemic regions are rapidly revascularized, the neurological disability resulting from AIS can be significantly reduced. LÄS MER

  3. 37. Non-invasive EEG Functional Neuroimaging for Localizing Epileptic Brain Activity

    Författare :Yazdan Shirvany; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Somatosensory Evoked Potentials; Forward Problem; Inverse Problem; Mathematical Dipole; Epileptic Spike; Functional Neuroimaging; Structural Magnetic Resonance Imaging; Particle Swarm Optimization; Source localization; Finite Element Method; Non-invasive EEG;

    Sammanfattning : Epilepsy is one of the most common neurologic diseases in the world, and is present in up to 1% of the world’s population. Many patients with epilepsy never receive the treatment which make them seizure free. Surgical therapy has become an important therapeutic alternative for patients with drug resistant epilepsy. LÄS MER

  4. 38. Middle Ear Cholesteatoma : Surgical Treatment, Follow-up and Hearing Restoration

    Författare :Lennart Edfeldt; Helge Rask-Andersen; Juha Silvola; Uppsala universitet; []
    Nyckelord :Oto-Rhino-Laryngology; Oto-rhino-laryngologi;

    Sammanfattning : Although middle-ear cholesteatoma is a major topic in otological research, its etiology and pathogenesis remain unclear. Pediatric cholesteatoma is considered more aggressive than adult cholesteatoma, as it has a higher rate of growth, is more often infected and exhibits wider extension. LÄS MER

  5. 39. Resection of colorectal liver metastases - Impact of preoperative chemotherapy

    Författare :Sam Eriksson; Lund Kirurgi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Colorectal liver metastases; Preoperative chemotherapy; Liver resection; Hepatic microcirculation; Sarcopenia;

    Sammanfattning : Background Colorectal cancer is a leading cause of cancer related death worldwide. 20-30 % of patients will develop colorectal liver metastases (CRLMs). Surgical resection is the mainstay of treatment for CRLMs, and is often combined with perioperative chemotherapy, which can prolong progression-free survival after resection. LÄS MER

  7. 40. Growing up with one ear : central auditory structure and function in unilateral ear canal atresia

    Författare :Malin Siegbahn; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The following thesis aims to give more insight into the functional and structural response of the central auditory system to congenital unilateral ear canal atresia (UCA) and the accompanying asymmetric hearing with conductive hearing loss on the atretic side. There is clear evidence that unilateral hearing loss, including UCA, has a negative impact on sound localization ability and perception of speech in noise. LÄS MER