Search for dissertations about: "partial-volume effect"

Showing result 1 - 5 of 8 swedish dissertations containing the words partial-volume effect.

  2. 1. Methodological improvements in quantitative MRI : Perfusion estimation and partial volume considerations

    Author : André Ahlgren; Lund Medicinsk strålningsfysik; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : The magnetic resonance imaging (MRI) scanner is a remarkable medical imaging device, capable of producing detailed images of the inside of the body. In addition to imaging internal tissue structures, the scanner can also be used to measure various properties of the tissue. READ MORE

  4. 2. Error reduction strategies for quantitative PET with focus on hybrid PET/MRI

    Author : Elin Wallstén; Anne Larsson; Jan Axelsson; Katrine Riklund; Ronald Boellaard; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Positron emission tomography; PET; PET MR; PET MRI; medical imaging; partial-volume effect; attenuation correction; radiofysik; radiation physics;

    Abstract : Positron Emission Tomography (PET) is an important tool for detection, staging and follow-up in a wide range of diseases, including cancer and neurological disorders. As a functional imaging tool, PET can visualize biological processes, where positron emitting radioactive isotopes are connected to molecules with different functions in the body. READ MORE

  5. 3. Methological advances in the examination of the dopamine system in brain

    Author : Judit Sóvágó; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Dopamine-D2 D3 receptors; brain; [35S]GTPgS binding autoradiography; positron emission tomography; partial volume effect;

    Abstract : The dopamine (DA) system in brain has attracted considerable attention in neuroscience due to its involvement in fundamental brain functions and its postulated role in the pathophysiology of several neuropsychiatric disorders. Radioligand binding techniques in vitro and in vivo, such as receptor binding autoradiography and positron emission tomography (PET) have substantially contributed to our understanding of the DA system. READ MORE

  6. 4. PET/CT with 18F-FDG and 68Ga-DOTATOC in pulmonary carcinoid imaging

    Author : Natalja Uhlén; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Background: PET/CT, positron emission tomography combined with computed tomography, with 18F-FDG (2-deoxy-2-[18F]fluoro-D-glucose) is well established in oncological imaging. Pulmonary carcinoid tumours may have metabolic activity, making them available for PET/CT imaging with 18F-FDG. READ MORE

  7. 5. Spectral Computed Tomography with a Photon-Counting Silicon-Strip Detector

    Author : Mats Persson; Mats Danielsson; Hans Bornefalk; Jiang Hsieh; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Photon-counting; silicon-strip detector; spectral computed tomography; ring artifacts; fluence rate; basis material decomposition; sub-pixel information; Fysik; Physics;

    Abstract : Computed tomography (CT) is a widely used medical imaging modality. By rotating an x-ray tube and an x-ray detector around the patient, a CT scanner is able to measure the x-ray transmission from all directions and form an image of the patient’s interior. READ MORE