Search for dissertations about: "proton beams"

Showing result 1 - 5 of 34 swedish dissertations containing the words proton beams.

  1. 1. Clinical application of intensity and energy modulated radiotherapy with photon and electron beams

    University dissertation from Umeå : Strålningsvetenskaper

    Author : Xiangkui Mu; Umeå universitet.; [2005]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Oncology; Radiotherapy; IMXT; IMET; IMPT; proton beams; electron beams; treatment planning; cancer induction; side-effects; fraction time; intensity modulated radiotherapy; Onkologi; MEDICINE Surgery Oncology; MEDICIN Kirurgi Onkologi; Oncology; onkologi;

    Abstract : In modern, advanced radiotherapy (e.g. intensity modulated photon radiotherapy, IMXT) the delivery time for each fraction becomes prolonged to 10-20 minutes compared with the conventional, commonly 2-5 minutes. The biological effect of this prolongation is not fully known. READ MORE

  2. 2. Beam Modelling for Treatment Planning of Scanned Proton Beams

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Peter Kimstrand; Uppsala universitet.; [2008]
    Keywords : Radiation sciences; proton therapy; treatment planning; beam modelling; dose calculation; Monte Carlo; Strålningsvetenskap;

    Abstract : Scanned proton beams offer the possibility to take full advantage of the dose deposition properties of proton beams, i.e. the limited range and sharp peak at the end of the range, the Bragg peak. READ MORE

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

    University dissertation from Stockholm : Medical Radiation Physics, Stockholm University, together with KI

    Author : Joakim Medin; Stockholms universitet.; [1997]
    Keywords : 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

  4. 4. Micro/nanometric Scale Study of Energy Deposition and its Impact on the Biological Response for Ionizing Radiation Brachytherapy radionuclides, proton and carbon ion beams

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Fernanda Villegas Navarro; Uppsala universitet.; [2016]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Ionizing radiation; Monte Carlo track structure code; Microdosimetric spread; Energy deposition clustering; RBE; Medicinsk radiofysik; Medical Radiophysics;

    Abstract : Research in radiotherapy for cancer treatment focuses on finding methods that can improve the compromise between tumour cell inactivation versus damage to the surrounding healthy tissue. As new radiation modalities such as proton therapy become accessible for everyday clinical practice, a better understanding of the variation in biological response of the tumour and healthy tissues would improve treatment planning to achieve optimal outcome. READ MORE

  5. 5. Radiation therapy of upper gastrointestinal cancers with scanned proton beams A treatment planning study

    University dissertation from Stockholm : Department of Physics, Stockholm University

    Author : Gracinda Mondlane; Stockholms universitet.; [2018]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Treatment planning; gastric cancer; liver metastases; photon beam therapy; proton beam therapy; dosimetric comparison; normal tissue complication probability; risk of radiation-induced secondary cancer; patient selection; medicinsk strålningsfysik; Medical Radiation Physics;

    Abstract : Proton beam therapy (PBT), using scanned beams, is an emerging modality used for the treatment of cancer. The clinical advantages of PBT, compared to commonly used photon beam therapy, have been demonstrated in different studies. READ MORE