Search for dissertations about: "Radiotherapy equipment"

Showing result 1 - 5 of 7 swedish dissertations containing the words Radiotherapy equipment.

  1. 1. Verification of dose calculations in radiotherapy

    Author : Tufve Nyholm; Mikael Karlsson; Ben Mijnheer; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; radiotherapy; dose calculation; quality control; pencil kernel; Radiological physics; Radiofysik;

    Abstract : External radiotherapy is a common treatment technique for cancer. It has been shown that radiation therapy is a both clinically and economically effective treatment for many types of cancer, even though the equipment is expensive. The technology is in constant evolution and more and more sophisticated and complex techniques are introduced. READ MORE

  2. 2. Heavy-ion transport codes for radiotherapy and radioprotection in space

    Author : Davide Mancusi; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; charge-changing cross sections; transport codes; radiotherapy; Monte-Carlo codes; heavy ions; radioprotection in space;

    Abstract : Simulation of the transport of heavy ions in matter is a field of nuclear science that has recently received attention in view of its importance for some relevant applications. Accelerated heavy ions can, for example, be used to treat cancers (heavy-ion radiotherapy) and show some superior qualities with respect to more conventional treatment systems, like photons (x-rays) or protons. READ MORE

  3. 3. Adjuvant treatments to prevent local reurrence after breast-conserving surgery for early breast cancer : radiation, endocrine- or brachytherapy

    Author : Åsa Wickberg; Göran Liljegren; Johan Ahlgren; Roger Olofsson Bagge; Örebro universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Breast-conserving surgery; radiotherapy; endocrine therapy; intraoperative brachytherapy;

    Abstract : Radiotherapy after breast-conserving surgery due to breast cancer is an established treatment, known to reduce the incidence of recurrence and even death from the disease. However some women are over-treated with sometimes serious adverse effects. De-escalating the treatment and find alternative adjuvant methods are becoming an important issue. READ MORE

  4. 4. Radiation and matter: how do they play with each other?

    Author : Davide Mancusi; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; heavy ions; models; transport codes; Boltzmann equation; Monte Carlo; radioprotection in space; radiotherapy; nuclear reactions;

    Abstract : The propagation of radiation is affected by the presence of matter; at the same time, the physicochemical properties of matter are modified by the passage of radiation. The interplay of radiation and matter is of crucial importance in many modern applications: accelerated heavy ions, in particular, can be used in radiotherapeutical treatments of some cancers; moreover, they are present in the space radiation environment and represent a serious threat to the health of spaceship crews and to the functionality of electronic equipment on board. READ MORE

  5. 5. In vitro and in vivo aspects of intrinsic radiosensitivity

    Author : Karl Brehwens; Andrzej Wojcik; Siamak Haghdoost; Wolfgang Dörr; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Radiation biology; changing dose rates; cytogenetics; hypothermia; X-rays; radiotherapy; osteoradionecrosis; biomarkers; oxidative stress; individual radiosensitivity; molekylär biovetenskap; Molecular Biosciences;

    Abstract : This thesis focuses on how physical and biological factors influence the outcome of exposures to γ/X-rays. That the dose rate changes during real life exposure scenarios is well-known, but radiobiological data from exposures performed at increasing or decreasing dose rates is lacking. READ MORE