Sökning: "Dose Calculation"

Visar resultat 1 - 5 av 48 uppsatser innehållade orden Dose Calculation.

  1. 1. Development of a new SBRT dose planning strategy for thoracic tumours in RayStation

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Radiofysik

    Författare :Olof Westman; [2023]
    Nyckelord :radiotherapy sbrt lung robust; radioterapi;

    Sammanfattning : Umeå University Hospital has acquired a new treatment planning system, RayStation, for radiotherapy. It has a different set of dose calculation algorithms that require new planning strategies for stereotactic lung cancer treatments. LÄS MER

  3. 2. Uncertainties in the use of synthetic CT (sCT) for daily online adaptive radiotherapy for lung cancer

    Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

    Författare :Johansson Vivika; [2023]
    Nyckelord :Medicine and Health Sciences;

    Sammanfattning : Background and purpose: Cone Beam Computed Tomography (CBCT) based online adaptive radiotherapy (oART) has been clinically implemented for several anatomical sites worldwide. However, random and abrupt anatomical changes with large density alterations can occur in lung patients, leading to uncertainties with synthetic computed tomography (sCT) and dose calculation. LÄS MER

  4. 3. Validation of a method utilising MR images for dose planning of prostate cancer treatment : Validation of new coil technology applied on the pelvis region of healthy volunteers

    Master-uppsats, Linköpings universitet/Institutionen för hälsa, medicin och vård

    Författare :Tova Rung; [2022]
    Nyckelord :Synthetic CT; Air coil;

    Sammanfattning : By generating a synthetic CT image (sCT) directly from the MRI, the electron density can be calculated, and the CT examination can be excluded from the patient flow minimizing the risk of uncertainties in the registration. Basing the radiation treatment process solely on MR images is called MRI-only and is beneficial for the patient as it can provide more accurate radiation treatment than the standardised treatment with fewer CT examinations and possibly a more cost-effective radiation treatment process. LÄS MER

  5. 4. Preparations for photon external beam radiotherapy treatment planning of small animals

    Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

    Författare :Joanie Diha Guei; [2022]
    Nyckelord :Medicine and Health Sciences;

    Sammanfattning : Introduction:The XenX is a small animal irradiation system that acquires high-resolution cone-beam tomography (CBCT) images of small animals and treats small animals with higher precision than medical linear accelerators. MuriSlice is a software for CBCT image reconstruction. LÄS MER

  7. 5. Verification Testing of Evacuationz, a Coarse Network Evacuation Model

    Master-uppsats, Lunds universitet/Avdelningen för Brandteknik

    Författare :Antariksh Gupta; [2022]
    Nyckelord :Technology and Engineering;

    Sammanfattning : Several evacuation models exist in the market. It is an issue for both the user and developer to evaluate the ease of use and the quality of the model results. Verification is the process of determining that the results of a calculation method match with the developer's conceptual modelling representation expectations, i.e. LÄS MER