Search for dissertations about: "Brain neoplasms"

Showing result 1 - 5 of 10 swedish dissertations containing the words Brain neoplasms.

  2. 1. Gadodiamide injection for Enhancement of MRI in the CNS. Applications, dose, field and time dependence

    Author : Per Åkeson; Malmö Diagnostisk radiologi; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Clinical physics; Phantom study.; Comparative study; Human; Time dependence; Dosage; Enhancement; Gadolinium; MRI contrast media; Contrast media; Magnetic resonance imaging; Spine; Brain neoplasms; secondary; Brain; radiology; tomography; medical instrumentation; Klinisk fysiologi; radiologi; tomografi; medicinsk instrumentering;

    Abstract : Aims of the study The aims of this study using Gadodiamide injection were to investigate: · Whether Gadodiamide injection was comparable to Gd-DTPA for the enhancement of CNS lesions. · The contrast effect at different field strengths. · The effective time-window for the enhancement of blood-brain barrier damage. READ MORE

  4. 2. MRI at 3 T of brain functions and fibre tracts adjacent to intracranial tumors

    Author : Danielle van Westen; Lund Diagnostisk radiologi; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; medical instrumentation; Klinisk fysiologi; radiologi; tomografi; medicinsk instrumentering; radiology; tomography; Clinical physics; Medicin människa och djur ; Medicine human and vertebrates ; somatosensory cortex; diffusion magnetic resonance imaging; neoplasms; Functional Magnetic Resonance Imaging;

    Abstract : The aims of the studies were: to evaluate the spatial resolution of fMRI at 3 T by studying fingersomatotopy in area 3 b of the primary sensory area (Paper 1); to investigate the potential of fMRI at 3T as a clinical tool for preoperative evaluation of patients with intracranial tumors (Paper 2); to investigate the effect of glioma resection on the spatial extent of fMRI activation as compared to the normal within-subject variability (Paper 3); to determine whether the apparent diffusion coefficient (ADC) and fractional anisotropy (FA) can distinguish tumor-infiltrated edema of gliomas from pure edema of meningiomas and metastases (Paper 4). Results: Strict somatotopic organisation in the primary sensory cortex was shown in the group average; at the subject level the thumb was located laterally, anteriorly and inferiorly to the little finger in 94 % of subjects (Paper 1). READ MORE

  5. 3. Heparan Sulfate Proteoglycans in Brain Tumor Development

    Author : Argyris Spyrou; Karin Forsberg Nilsson; Fredrik Johansson Swartling; Jöns Hilborn; John Couchman; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; glioma; pediatric brain tumors; heparanase; NDST1; heparan sulfate proteoglycans; CD24; glycosaminoglycan mimetics; Biology with specialization in Molecular Cell Biology; Biologi med inriktning mot molekylär cellbiologi;

    Abstract : Malignant brain tumors are aggressive neoplasms that remain challenging to treat in spite of their detailed molecular characterization. Both adults and children may suffer from brain tumors, which, if not lethal, can cause severe long-term and devastating side effects. READ MORE

  6. 4. Mangafodipir trisodium (MnDPDP)-enhanced magnetic resonance imaging of the liver and pancreas

    Author : Chen Wang; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Oncology; Liver; pancreas; neoplasms; metastases; endocrine tumor; MR imaging; contrast medium; mangafodipir trisodium; MnDPDP; manganese; Onkologi; Oncology; Onkologi; diagnostisk radiologi; Diagnostic Radiology;

    Abstract : Contrast-enhanced magnetic resonance imaging (MRI) of the liver and pancreas is frequently performed to improve the sensitivity and specificity of lesion detection in these organs. The concept of using tissue-specific contrast media is to selectively enhance the normal parenchyma, but not lesions, so that the contrast between tumorous and normal tissue is increased, and lesion detectability improved. READ MORE

  7. 5. Morbidity and childbirth in myeloproliferative neoplasms

    Author : Anna Ravn Landtblom; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Myeloproliferative neoplasms (MPN) are a family of chronic hematologic cancers, characterized by excess proliferation of myeloid cell lineages, or fibrosis of the bone marrow. Patients with MPN generally have a long expected survival. To elucidate morbidities during the disease course, e.g. READ MORE