Sökning: "Photon therapy"
Visar resultat 1 - 5 av 59 avhandlingar innehållade orden Photon therapy.
1. Analysis of quality characteristics of radiotherapeutic photon beams
Sammanfattning : The lepton and photon contamination of high energy photon beams for radiation therapy has been investigated computationally and experimentally. The contaminating particles will effect the quality of the beam by increasing the surface dose, degrading the uniformity of the beam, broadening the penumbra, and increasing the energy imparted outside the useful beam. LÄS MER
2. 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
3. Pharmacokinetics and dosimetry of radiolabelled octreotide for tumour therapy
Sammanfattning : Somatostatin (SS) receptors (sstr) are usually highly expressed on neuroendocrine (NE) tumours. The radiolabelled SS analogue 111In-DTPA-D-Phe1-octreotide is today widely used to scintigraphically visualise NE tumours, and high 111In activity concentrations are obtained in tumour vs. normal tissues. LÄS MER
4. Radiation therapy of upper gastrointestinal cancers with scanned proton beams : A treatment planning study
Sammanfattning : 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. LÄS MER
5. Development of improved radiation therapy techniques using narrow scanned photon beams
Sammanfattning : The present thesis is focused on the development and application of narrow scanned high energy photon beam for radiation therapy. The introduction of physically and biologically optimized intensity modulated radiation therapy (IMRT) requires a flexible and accurate dose delivery method to maximize the treatment outcome. LÄS MER