Sökning: "dosimetry"

Visar resultat 1 - 5 av 95 avhandlingar innehållade ordet dosimetry.

  1. 1. Key Data for the Reference and Relative Dosimetry of Radiotherapy and Diagnostic and Interventional Radiology Beams

    Detta är en avhandling från Stockholm : Department of Physics, Stockholm University

    Författare :Hamza Benmakhlouf; Stockholms universitet.; [2015]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Backscatter factors; Diagnostic radiology dosimetry; Mass energy-absorption coefficients; Monte Carlo; Output correction factors; Radiotherapy dosimetry; Reference dosimetry; Relative dosimetry; Small photon fields; medicinsk strålningsfysik; Medical Radiation Physics;

    Sammanfattning : Accurate dosimetry is a fundamental requirement for the safe and efficient use of radiation in medical applications. International Codes of Practice, such as IAEA TRS-398 (2000) for radiotherapy beams and IAEA TRS-457 (2007) for diagnostic radiology beams, provide the necessary formulation for reference and relative dosimetry and the data required for their implementation. LÄS MER

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

    Detta är en avhandling från Linköping : Linköpings universitet

    Författare :Håkan Hedtjärn; Linköpings universitet.; Linköpings universitet.; [2003]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICINE; MEDICIN;

    Sammanfattning : 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. LÄS MER

  3. 3. Mixed Beam Dosimetry - From Reactor Core to BNCT Patient

    Detta är en avhandling från Per Munck af Rosenschöld, Dept. of Radiation Physics, Klinikg. 7, 22185 LUND, SWEDEN

    Författare :Per Munck af Rosenschöld; Lunds universitet.; Lund University.; [2003]
    Nyckelord :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;

    Sammanfattning : 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). LÄS MER

  4. 4. Complex source modeling for electromagnetic dosimetry

    Detta är en avhandling från Per Munck af Rosenschöld, Dept. of Radiation Physics, Klinikg. 7, 22185 LUND, SWEDEN

    Författare :Markus Johansson; [2008]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; optimization; phase-retrieval; source modeling; dosimetry; SAR;

    Sammanfattning : Electromagnetic modeling of complex sources is useful in dosimetry applications as well as for near-field to far-field transformations and antennadiagnostics. In order to determine whether exposure safety guidelines, such as the EU directive 2004/40/EC, are complied with, it is important to be able tomodel the field distribution from electromagnetic sources. LÄS MER

  5. 5. Dosimetry of Local Radio Frequency Exposure

    Detta är en avhandling från Per Munck af Rosenschöld, Dept. of Radiation Physics, Klinikg. 7, 22185 LUND, SWEDEN

    Författare :Rudolf Kopecky; [2006]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; subgridding; FDTD; rats; head; SAR; dosimetry; inner ear labyrinth; mobile phone;

    Sammanfattning : Finite-difference time-domain (FDTD) is a popularcomputational electrodynamics modelling technique. It has been widelyused, from radar cross section computations through electromagneticcompatibility investigations to modelling of electromagnetic exposurein biological tissues. LÄS MER