Search for dissertations about: "organ dose"

Showing result 16 - 20 of 156 swedish dissertations containing the words organ dose.

  2. 16. Dose Management in Diagnostic Radiology - application of the DICOM imaging standard and a Monte Carlo dose engine for exposure surveillance

    Author : Hans-Erik Källman; Anders Ahnesjö; Hilde M. Olerud; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Radiology; metadata; DICOM; radiation safety; Monte Carlo; source model; patient model; optimization; justification; Medicinsk radiofysik; Medical Radiophysics;

    Abstract : Ionizing radiation is used in diagnostic radiology with a large contribution to the health of the patients. The regulations to limit the detrimental effects, e.g. cancer induction, are based on recommendations from the International Commission on Radiological Protection (ICRP). READ MORE

  4. 17. Endothelial function during ischemia-reperfusion and effects of inhalation of nitric oxide

    Author : Lars Lindberg; Anestesiologi och intensivvård; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; chemiluminescence; capnography; monitoring; inhalation; mechanical ventilation; pulmonary hypertension; nitric oxide; EDRF; endothelium-derived relaxation factor; endothelium; organ preservation; Lung; lung transplantation; electrochemical fuel cell; Anaesthesiology; intensive care; Anestesiologi; intensivvård;

    Abstract : The vascular endothelium is an important regulatory organ in circulatory physiology and plays a central role in the response to acute inflammation and ischemia/reperfusion. Activation and dysfunction of the pulmonary vascular endothelium are closely related to clinical findings of pulmonary dysfunction. READ MORE

  5. 18. Dosimetry of Radionuclide Therapy with 177Lu-octreotate

    Author : Mattias Sandström; Hans Lundqvist; Mark Lubberink; Sven-Erik Strand; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; 177Lu-octreotate; Absorbed dose; Neuroendocrine tumour; Medicinsk radiofysik; Medical Radiophysics;

    Abstract : In radionuclide therapy it is still common to administer standard activities or to scale administered activity with blunt parameters such as body weight or surface area. This is not ideal because, due to considerable variation in kinetics, large safety margins have to be applied to avoid radiation damage to healthy organs, which causes under-treatment of many patients. READ MORE

  6. 19. On Quality in Radiotherapy Treatment Plan Optimisation

    Author : Hunor Benedek; Lund Medicinsk strålningsfysik; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Pareto optimisation; Pareto fronts; Dose prediction; Machine learning; Deliverable treatment plans; Volumetric modulated arc therapy; IMRT; patient-specific plan quality; plan quality; Multi Criteria Optimisation; Automated Treatment Planning;

    Abstract : Radiotherapy is one of the essential treatments used in the fight against cancer. The goal of radiotherapy is to deliver a high dose of ionising radiation to the tumour volume and at the same time minimise the effect on healthy tissue by reducing the radiation to critical organs. READ MORE

  7. 20. 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