Search for dissertations about: "radiation safety Dissertation"

Showing result 6 - 10 of 58 swedish dissertations containing the words radiation safety Dissertation.

  1. 6. Radiation Detection Techniques for the Enhancement of Nuclear Safety

    Author : Petty Bernitt Cartemo; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; whole body counting; depth profiling; voxel phantom; nuclear safeguards; Monte Carlo; orphan sources; radiation-induced material damage; pulsed beam; positron lifetime;

    Abstract : The hazard originating from the use of nuclear materials in various areas of the society necessitates a number of experimental techniques for controlling and increasing the safety connected to radioactive substances.The following thesis is divided into two parts, representing different aspects to the detection of radiation effects. READ MORE

  2. 7. Cataract from ultraviolet radiation

    University dissertation from Stockholm : Karolinska Institutet, Department of Clinical Sciences

    Author : Stefan Löfgren; Karolinska Institutet.; Karolinska Institutet.; [2001]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Cataract; ultraviolet radiation; lens; rat; transmittance; pigment; age; pupil size.;

    Abstract : Cataract is the major cause of low vision and blindness in the world. Epidemiological and experimental studies link cataract to (solar) ultraviolet radiation (UVR) exposure. Current safety limits of UVR exposure are based on animal experiments, but many factors are less well known in UVR cataractogenesis. READ MORE

  3. 8. Toward Robust Optimization of Adaptive Radiation Therapy

    University dissertation from Stockholm, Sweden : KTH Royal Institute of Technology

    Author : Michelle Böck; KTH.; [2019]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; optimization; adaptive radiation therapy; radiation therapy treatment planning; uncertainty; robust optimization; stochastic programming; Tillämpad matematik och beräkningsmatematik; Applied and Computational Mathematics;

    Abstract : Adaptive radiation therapy is an evolving cancer treatment approach which relies on adapting the treatment plan in response to patient-specific interfractional geometric variations occurring during the fractionated treatment. If those variations are not addressed through adaptive replanning, the resulting treatment quality may be compromised. READ MORE

  4. 9. Quality Assurance in Radiotherapy - Development and evaluation of new tools for improved patient safety

    University dissertation from Lund University

    Author : Fredrik Nordström; Lunds universitet.; Lund University.; [2012]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; monitor unit verification; in vivo dosimetry; real-time verification; gel dosimetry; 4D dosimetry; IMRT; VMAT; data integrity; radiotherapy; Quality assurance;

    Abstract : Popular Abstract in Swedish Strålbehandling är en av de vanligaste behandlingarna mot cancer. Hälften av alla behandlingar syftar till att bota patienten från sjukdomen, men strålbehandling är även en mycket effektiv behandling för att lindra smärta och andra symptom för patienter med en obotlig cancer. READ MORE

  5. 10. Safety limit estimation for cataract induced by ultraviolet radiation

    University dissertation from Stockholm : Karolinska Institutet, Department of Clinical Neuroscience

    Author : Xiuqin Dong; Karolinska Institutet.; Karolinska Institutet.; [2005]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Ultraviolet radiation UVR ; Sprague-Dawley rat; cataract; light scattering; doseresponse function; maximum acceptable dose MAD ; maximum tolerable dose MTD ; in vivo; in vitro; age.;

    Abstract : Background: Ultraviolet radiation (UVR) is considered one of the major risk factors for agerelated cataract. UVR-induced cataract follows a continuous dose-response function. READ MORE