Sökning: "rectum cancer"

Visar resultat 1 - 5 av 21 uppsatser innehållade orden rectum cancer.

  1. 1. Evaluating aperture shape controller (ASC) in modulated radiation treatments

    Master-uppsats,

    Författare :Vilma Andrén Cederholm; [2023-09-28]
    Nyckelord :Medical physics;

    Sammanfattning : To decrease aperture complexity, the aperture shape controller (ASC) is a recently introduced function in Eclipse external beam planning (Varian Medical Systems, Palo Alto, USA). ASC works within the photon optimizer, minimizing distances between adjacent leaf tips of the MLC. LÄS MER

  3. 2. Radiotherapy treatment strategy for prostate cancer with lymph node involvement

    Master-uppsats, Umeå universitet/Institutionen för fysik

    Författare :Amanda Östensson; [2023]
    Nyckelord :Radiotherapy; prostate cancer; lymph node; gold fiducial marker; multiple target;

    Sammanfattning : Radiotherapy is a common and useful method for treating prostate cancer, often using gold fiducial markers in the prostate as guidance. However, when there is a high risk of lymph node involvement, the independent motion of volumes causes complications in patient positioning since there is a choice between position against the gold fiducial markers or the bone anatomy. LÄS MER

  4. 3. Uttrycket av Histamin-4 Receptorer hos patienter med Crohns sjukdom : Studie om uttrycket på eosinofiler och mastceller

    Kandidat-uppsats, Linköpings universitet/Avdelningen för kirurgi, ortopedi och onkologi

    Författare :Matteus Nordenstein; [2023]
    Nyckelord :Autoimmunitet; Tarmsjukdomar; Eosinofiler; Mastceller; Immunologi;

    Sammanfattning : Crohns sjukdom är en kronisk inflammatorisk sjukdom som påverkar hela gastrointestinala kanalen, från mun ner till ändtarmen. Sjukdomen är progressiv och innefattar olika skov av symptom, som till exempel diarré, magont, rektalblödning, viktminskning, feber och trötthet. LÄS MER

  5. 4. STANDARDIZED ORGAN AT RISK VOLUME FOR EXTERNAL BEAM RADIATION THERAPY IN PROSTATE CANCER AND ITS RELATIONSHIP TO VOLUMES DEFINED BY CLINICAL PRACTICE

    Master-uppsats,

    Författare :Dang Thao; [2022-01-13]
    Nyckelord :Medical physics; Radiation therapy; Prostate cancer; Organs at risk;

    Sammanfattning : Background/ Purpose: In radiation therapy (RT), the radiation dose calculated in tumours and normal tissue depends on how the volumes are defined. It is difficult to standardize how tumour volumes should be defined because their anatomical extension can differ greatly between individuals. LÄS MER

  7. 5. Deformable registration when combining brachytherapy and external beam radiotherapy

    Master-uppsats, KTH/Medicinsk avbildning

    Författare :Lisa Mach; [2021]
    Nyckelord :;

    Sammanfattning : Patients with cervical cancer are treated both with external beam radiotherapy(EBRT) and brachytherapy (BT) which involves an applicator. During the treatments, CT-images are taken and to perform dose calculations, deformable image registration (DIR) is performed. LÄS MER