Search for dissertations about: "PET CT treatment verification"

Found 5 swedish dissertations containing the words PET CT treatment verification.

2. 1. PET and MR imaging in prostate cancer

   Author : Kristina Sandgren; Tufve Nyholm; Joakim Jonsson; Camilla Thellenberg-Karlsson; Lennart Blomqvist; Heidi Lyng; Umeå universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; PET; PSMA; MRI; PET MRI; imaging; prostate cancer; intraprostatic tumour detection; radiofysik; radiation physics;

   Abstract : The current risk assessment of prostate cancer (PC) relies on histopathological samples from biopsies and clinical variables such as prostate-specific antigen (PSA). However, this comes with uncertainties and in some cases it can be challenging to separate patients who would benefit from radical treatment and those who would not. READ MORE

4. 2. Verification of high energy photon therapy based on PET/CT imaging of photonuclear reactions

   Author : Sara Janek Strååt; Anders Brahme; Cathrine Jonsson; Iuliana Dasu; Sibylle Ziegler; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Photonuclear reactions; PET CT treatment verification; High-energy photon therapy; Medical Radiation Physics; medicinsk strålningsfysik;

   Abstract : For classical and intensity modulated radiation therapy of deep-seated tumors, high-energy photons are the optimal radiation modality from an integral dose point of view. By using narrow scanned beams the treatment outcome can be improved substantially by delivering biologically optimized intensity modulated distributions often with sharp dose gradients. READ MORE

5. 3. Production of high quality 11C beams for radiation treatment and accurate PET-CT dose delivery verification

   Author : Marta Lazzeroni; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : Radiation therapy with external beams of positron emitter light ions offers the optimal solution for simultaneously treating and in vivo monitoring the delivery of the dose in 3D with Positron Emission Tomography (PET) or PET-Computed Tomography (CT) imaging. Specifically, positron emitter light ion beams merge the main distinctive advantages of light ion therapy, namely a high conformal and biological effective dose delivery to the tumor, an optimal penumbra, and sparing of the surrounding normal tissues, with the advantage of a high β+-activity signal mainly produced directly by the beam itself, and therefore not primarily dependent on the specific stoichiometry of the body tissues. READ MORE

6. 4. Development of improved radiation therapy techniques using narrow scanned photon beams

   Author : Björn Andreassen; Anders Brahme; Håkan Danared; Roger Svensson; Antony Lomax; Stockholms universitet; []
   Keywords : IMRT; Scanned photon beams; PET-CT treatment verification; Monte Carlo; NATURAL SCIENCES; NATURVETENSKAP; Medical Radiation Physics; medicinsk strålningsfysik;

   Abstract : 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. READ MORE

7. 5. Characterization and Clinical Application of Normoxic Polymer Gel in Radiation Therapy Dosimetry

   Author : Anna Karlsson; Malmö Medicinsk strålningsfysik; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; 3D dose verification; uncertainties; low-density gel; fractionation dependence; characterization; normoxic gel; polymer gel dosimetry; MRI; Physics; Fysik;

   Abstract : Cancer is one of the main causes of death in the world, particularly in developing countries and is considered as a major public health problem. Radiation therapy has been an important modality for treatment of cancer for many decades. READ MORE