Sökning: "Radiation therapy"
Visar resultat 1 - 5 av 288 avhandlingar innehållade orden Radiation therapy.
1. Energy and intensity modulated radiation therapy with electrons
Sammanfattning : 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. LÄS MER
2. The microdosimetric variance-covariance method used for beam quality characterization in radiation protection and radiation therapy
Sammanfattning : Radiation quality is described by the RBE (relative biological effectiveness) that varies with the ionizing ability of the radiation. Microdosimetric quantities describe distributions of energy imparted to small volumes and can be related to RBE. LÄS MER
3. Accurate description of heterogeneous tumors for biologically optimized radiation therapy
Sammanfattning : In this thesis, a model of tissue oxygenation is presented, that takes into account the heterogeneous nature of tumor vasculature. Even though the model is rather simple, the resulting oxygen distributions agree very well with clinically observed oxygen distributions for most tumors and healthy normal tissues. LÄS MER
4. How to glow : Development of aninnovative radiation treatment technique
Sammanfattning : Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vestibulum nec sapien id enim rutrum vehicula vel eget lacus. Morbi eu odio convallis, maximus ante vel, euismod elit. Suspendisse tincidunt accumsan elit. LÄS MER
5. Modelling late toxicity in hypofractionated radiation therapy
Sammanfattning : In hypofractionated radiation therapy (RT), the treatment is delivered by few fractions with high doses per fraction. This is in contrast to conventionally fractionated RT where the total dose is delivered in many fractions with low doses per fraction. LÄS MER