Search for dissertations about: "kerma"

Showing result 6 - 10 of 10 swedish dissertations containing the word kerma.

  2. 6. Mixed Beam Dosimetry - From Reactor Core to BNCT Patient

    Author : Per Munck af Rosenschöld; Lund Medicinsk strålningsfysik; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; BNCT; dosimetry; radiotherapy; mixed beam; quality assurance; in vivo dosimetry; Monte Carlo; ionization chamber; foil activation; MCNP; beam quality correction factor; photon transmission.; Nukleärmedicin; radiobiology; Nuclear medicine; radiobiologi; Radiofarmaceutisk teknik; Radiopharmaceutical technology;

    Abstract : Accurate radiation dosimetry is of paramount importance in order to ensure safe delivery of radiotherapy, and for the possibility of meaningful evaluation of clinical trials, as the radiation absorbed dose is correlated to tissue response. The aim of the studies described in this thesis was to investigate and devise novel approaches to mixed beam dosimetry in boron neutron capture therapy (BNCT). READ MORE

  4. 7. Radiation dose and related risk in interventional cardiology

    Author : Angeliki Karambatsakidou; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Cardiac catheterization procedures are classified as high radiation dose procedures, European Directive 2013/59/Euratom, and may result in skin injuries (deterministic effects) and/or increased cancer risk (stochastic effects). The radiation-induced effects can be expressed differently depending on whether the patient is a child or an adult. READ MORE

  5. 8. Dosimetry in brachytherapy : application of the Monte Carlo method to single source dosimetry and use of correlated sampling for accelerated dose calculations

    Author : Håkan Hedtjärn; David Rogers; Linköpings universitet; []
    Keywords : MEDICINE; MEDICIN;

    Abstract : Three issues related to brachytherapy dosimetry are addressed in this thesis. (1) The prospect of using Compton scattering to measure energy spectra from a high dose-rate (HDR) 192Ir source is discussed and a Compton spectrometer evaluated. READ MORE

  6. 9. Studies of clinical proton dosimetry using Monte Carlo simulation and experimental techniques

    Author : Joakim Medin; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Proton dosimetry; Proton stopping power; Monte Carlo; Proton stopping-power ratios; Ionization chamber calibration; medicinsk strålningsfysik; Medical Radiation Physics;

    Abstract : The present work aims at improving clinical proton dosimetry based on ionization chambers, and to bring its state of development closer to the corresponding status of conventional photon and electron dosimetry. In order to accomplish this, both theoretical and experimental methods have been used. READ MORE

  7. 10. Optimisation of radiographic imaging by means of factorial experiments

    Author : Eva Norrman; Jan Persliden; Andreas Oberstedt; Bertil Axelsson; Örebro universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik; Fysik; Physics;

    Abstract : In the optimisation process of radiographic imaging, factorial designed experiments can be applied. The parameters (factors) are varied together instead of one at a time, making it possible to discover interactions between the factors as well as main influences of them on the result variable. READ MORE