Search for dissertations about: "nuclear grade"

Showing result 1 - 5 of 66 swedish dissertations containing the words nuclear grade.

  2. 1. Applications of diffusion MRI: Tensor-valued encoding, time-dependent diffusion, and histological validation

    Author : Jan Brabec; Lund Medicinsk strålningsfysik; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; diffusion MRI; meningioma; glioma; brain tumors; intracranial tumors; undulations; restricted diffusion; time dependence; spherical b-tensor encoding; linear b-tensor encoding; histogram analysis; anisotropic kurtosis; isotropic kurtosis; hyperintensity; conspicuity; white matter; detection; diffusion spectrum; consistency; type; grade; axon diameter; axonal trajectories; Fysicumarkivet A:2022:Brabec;

    Abstract : Diffusion MRI (dMRI) sensitizes the MR signal to the diffusion of water molecules at the microscopic level and thereby non-invasively probes tissue microstructure. This is relevant when determining biological properties of tissues, for example, cancer type and its malignancy. READ MORE

  4. 2. Preoperative MRI and PET in suspected low-grade gliomas : Radiological, neuropathological and clinical intersections

    Author : Anna Falk Delgado; Elna-Marie Larsson; Anja Smits; Jens Sörensen; John Hald; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Low-grade glioma; MRI; PET; FA; MD; Perfusion; Diffusion; Neuropathology; Oligodendroglioma; Astrocytoma; PET; tractography; DTI; DTT; Radiologi; Radiology;

    Abstract : Background: Gliomas are neuroepithelial tumours classified by cell type and grade. In adults, low-grade gliomas are comprised mainly of astrocytomas and oligodendrogliomas grade II. READ MORE

  5. 3. Angiogenesis in human renal cell carcinoma : hypoxia, vascularity and prognosis

    Author : Johanna Sandlund; Torgny Rasmuson; Börje Ljungberg; Kjell Grankvist; Anders Bergh; Elisabeth Kjellén; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Endoglin CD105; CD31; prognosis; CA IX; HIF-2α; renal cell carcinoma; tissue microarray; immunohistochemistry; real-time PCR; stage; grade; Oncology; Onkologi;

    Abstract : Background: Angiogenesis is recognised as a critical step in tumour progression. The angiogenic switch is activated by various trigger signals, such as hypoxia, low pH, and genetic mutations. Renal cell carcinoma (RCC) is often an aggressive tumour, and advanced disease has limited treatment options and bad prognosis. READ MORE

  6. 4. Significance of white matter anatomy in interpreting features and behaviour of low-grade gliomas and implications for surgical treatment

    Author : Francesco Latini; Mats Ryttlefors; Lorenzo Bello; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; White matter; Cerebral gliomas; DTI; Brain-Grid; Brain mapping; Human connectome project; Anatomi; Human Anatomy; Oncology; Onkologi; Neurokirurgi; Neurosurgery; Radiology; Radiologi; Neurology; Neurologi;

    Abstract : Diffuse gliomas are extremely heterogeneous tumours characterized by slow growth but extensive infiltration. Their kinetic features reflect the complex interaction over time with the surrounding brain, influencing treatment planning and outcome. READ MORE

  7. 5. The phase-out of the nuclear family? : empirical studies on the economics and structure of modern Swedish families

    Author : Magdalena Norberg-Schönfeldt; Magnus Wikström; Thomas Aronsson; Katarina Nordblom; Umeå universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Time allocation; labour-force participation; educational achievements; match quality; financial surprises; unemployment; divorce; family structure; Economics; Nationalekonomi;

    Abstract : This thesis consists of three papers on the economics and structure of Swedish families.Paper [I] examines the determinants of children’s educational achievement in Sweden. READ MORE