Search for dissertations about: "Magnus Karlsson"

Showing result 1 - 5 of 59 swedish dissertations containing the words Magnus Karlsson.

  1. 1. Integration of MRI into the radiotherapy workflow

    University dissertation from Umeå : Umeå Universitet

    Author : Joakim Jonsson; Tufve Nyholm; Mikael Karlsson; Magnus Karlsson; Uulke van der Heide; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; magnetic resonance imaging; radiotherapy; treatment planning; image registration; workflow; radiofysik; radiation physics;

    Abstract : The modern day radiotherapy treatments are almost exclusively based on computed tomography (CT) images. The CT images are acquired using x-rays, and therefore reflect the radiation interaction properties of the material. READ MORE

  2. 2. Energy and intensity modulated radiation therapy with electrons

    University dissertation from Umeå : Umeå universitet

    Author : Lennart Olofsson; Mikael Karlsson; Magnus Karlsson; Björn Zackrisson; Erik Traneus; [2005]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Radiation sciences; Radiation therapy; Conformal therapy; IMRT; Electrons; Electron treatment head; Electron MLC; Bremsstrahlung reduction; Integral dose; Penumbra; Output factor; Strålningsvetenskap; MEDICINE Physiology and pharmacology Radiological research Radiation biology; MEDICIN Fysiologi och farmakologi Radiologisk forskning Strålningsbiologi; radiofysik; radiation physics;

    Abstract : In recent years intensity modulated radiation therapy with photons (xIMRT) has gained attention due to its ability to reduce the dose in the tissues close to the tumour volume. However, this technique also results in a large low dose volume. READ MORE

  3. 3. Evolution in changing environments revealed by fire melanism in pygmy grasshopper

    University dissertation from Linnaues University Press

    Author : Magnus Karlsson; Anders Forsman; Karl Gotthard; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Evolution Melanism Polymorphism Pygmy grasshoppers; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi; Evolutionary Biology; Evolutionsbiologi;

    Abstract : According to theory, genetic diversity can be maintained by environmental variation and the degree of genetic and phenotypic polymorphism may enhance the ability of populations to endure stress imposed by changing environments. In my thesis I used colour polymorphic pygmy grasshoppers (Tetrix subulata) as a model system to explore how environmental variation influenced genetic diversity. READ MORE

  4. 4. Ganglionic nerve fibres in ventral roots

    University dissertation from Linköpings Universitet

    Author : Magnus Karlsson; [1995]
    Keywords : ;

    Abstract : .... READ MORE

  5. 5. Ganglionic nerve fibres in ventral roots

    University dissertation from Linköping : Linköpings universitet

    Author : Magnus Karlsson; Mårten Risling; [1995]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICINE; MEDICIN;

    Abstract : According to the law of Magendie, the ventral roots channel efferent nerve fibres from the spinal cord to the periphery, while the dorsal roots channel afferent axons from the periphery into the spinal cord. However, as sensory C-fibres have been observed in mammalian ventral roots outside the autonomic outflow, this law has been questioned. READ MORE