Search for dissertations about: "radiology theses"

Showing result 6 - 10 of 528 swedish dissertations containing the words radiology theses.

  2. 6. Transjugular intrahepatic portosystemic shunt in the treatment of symptomatic portal hypertension

    Author : Kerstin Rosenqvist; Rickard Nyman; Charlotte Ebeling Barbier; Fredrik Rorsman; Lars-Gunnar Eriksson; Lars Lönn; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Portal hypertension; TIPS; transjugular; portal venous thrombosis; mesenteric venous thrombosis; liver cirrhosis; interventional radiology; Radiology; Radiologi;

    Abstract : Portal hypertension (PHT) is a condition with serious complications, such as variceal bleeding, refractory ascites and bowel ischemia. The cause of PHT may be pre-, intra- or post-hepatic. Initial treatment is pressure-reducing drugs and the treatment of acute symptoms. READ MORE

  4. 7. Prostate Cancer Diagnosis : experimental and Clinical Studies With HRMAS NMR Spectroscopy

    Author : Katarina Stenman; Katrine Åhlström-Riklund; Anders Bergh; Peter Lundberg; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Prostate cancer; PCa; HRMAS NMR; MRSI; metabolomics; Gleason score; citrate; inositol; choline; Krebs cycle; PUFA; omega-6; omega-3; Diagnostic radiology; Diagnostisk radiologi; Radiology; radiologi;

    Abstract : A few abnormal cells found in a small piece of prostate tissue are most consequential for a man’s future. The prevalence of prostate cancer (PCa) is increasing globally. READ MORE

  5. 8. Nuclear magnetic resonance and microcirculation: The influence of pulsatile brain-tissue motion on measurements of intravoxel incoherent motion and assessment of haemodynamics using exo- and endogenous tracers

    Author : Ronnie Wirestam; Lund Medicinsk strålningsfysik; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; diagnostic radiology; cortical activation; diffusion; tumor; tumour; ischemic stroke; ischaemic stroke; tracer kinetics; bolus tracking; phase mapping; brain motion; intracranial dynamics; blood flow; haemodynamics; vascularity; MRS; perfusion; MRI; magnetic resonance; Clinical physics; radiology; tomography; medical instrumentation; Klinisk fysiologi; radiologi; tomografi; medicinsk instrumentering;

    Abstract : In this project, the potential of magnetic resonance (MR) imaging and spectroscopy in studies of microcirculation and haemodynamics was evaluated. The spatial and temporal characteristics of human pulsatile brain-tissue movements in healthy individuals, relevant for the understanding of the cerebrospinal-fluid (CSF) circulation and the pathogenesis of hydrocephalus, were thoroughly investigated. READ MORE

  6. 9. Quantifying image quality in diagnostic radiology using simulation of the imaging system and model observers

    Author : Gustaf Ullman; Michael Sandborg; Gudrun Alm Carlsson; Nicolas Pallikarakis; Linköpings universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; radiology; radiation physics; image quality; optimisation; effective dose; chest radiography; Radiological physics; Radiofysik;

    Abstract : Accurate measures of both clinical image quality and patient radiation risk are needed for successful optimisation of medical imaging with ionising radiation. Optimisation in diagnostic radiology means finding the image acquisition technique that maximises the perceived information content and minimises the radiation risk or keeps it at a reasonably low level. READ MORE

  7. 10. Calculation of scatter in cone beam CT : Steps towards a virtual tomograph

    Author : Alexandr Malusek; Michael Sandborg; Gudrun Alm Carlsson; Michael Ljungberg; Linköpings universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Radiology; Radiologi;

    Abstract : Scattered photons—shortly scatter—are generated by interaction processes when photon beams interact with matter. In diagnostic radiology, they deteriorate image quality since they add an undesirable signal that lowers the contrast in projection radiography and causes cupping and streak artefacts in computed tomography (CT). READ MORE