Sökning: "radiotherapy planning"

Visar resultat 6 - 10 av 78 avhandlingar innehållade orden radiotherapy planning.

  1. 6. Dosimetric effects of breathing motion in radiotherapy

    Författare :Anneli Edvardsson; Lund Medicinsk strålningsfysik; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; radiotherapy; breathing motion; DIBH; interplay effects; VMAT; proton therapy; breast cancer; Hodgkin’s lymphoma; liver; dosimetry; treatment planning; medical physics;

    Sammanfattning : The goal of radiotherapy is to deliver a homogeneous high dose of radiation to a tumour while minimising the dose to the surrounding healthy tissue. To achieve this, increasingly advanced treatment techniques, such as volumetric modulated arc therapy (VMAT) and proton therapy, have been developed. LÄS MER

  3. 7. Radiotherapy in Early Breast Cancer

    Författare :Fredrika Killander; Bröstcancer-genetik; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; pentoxifylline; cyclophosphamide; tamoxifen; side effects; randomised trial; Breast cancer; radiotherapy;

    Sammanfattning : Radiotherapy (RT) after mastectomy has been part of the treatment for early breast cancer since the 1940s. The treatment reduces the risk of loco-regional recurrences, but implies risk of late side effects that can begin decades after RT. LÄS MER

  4. 8. Metal artifacts in computed tomography : impact of reduction methods on image quality and radiotherapy treatment planning

    Författare :Karin Andersson; Per Thunberg; Eva Norrman; Jan Persliden; Anders Tingberg; Örebro universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; computed tomography; metal artifacts; image quality; visual grading analysis; radiotherapy; proton therapy; hip prosthesis; dental implants;

    Sammanfattning : Degradation of image quality by metal artifacts is a common problem in computed tomography (CT) imaging, which can limit the diagnostic value of a CT examination and also introduce inaccuracies in radiotherapy (RT) treatment planning. In recent years, commercial metal artifact reduction (MAR) methods have been launched by several CT vendors. LÄS MER

  5. 9. Microdosimetric description of beam quality and biological effectiveness in radiation therapy

    Författare :Aris Tilikidis; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Dose-response relationship; radiation; Radiotherapy: adverse effects; Radiotherapy dosage; Radiotherapy planning; computer-assisted; Strålningsfysik; Medicin Radioterapi;

    Sammanfattning : .... LÄS MER

  7. 10. Comparative Treatment Planning in Radiotherapy and Clinical Impact of Proton Relative Biological Effectiveness

    Författare :Jonas Johansson; Bengt Glimelius; Anders Montelius; Tony Lomax; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Oncology; Radiotherapy; Comparative studies; Breast cancer; hypopharyngeal cancer; rectal cancer; Proton RBE; Onkologi; Oncology; Onkologi;

    Sammanfattning : The development of new irradiation techniques is presently a very active field of research with increased availability of more sophisticated modalities such as intensity modulated photons (IMRT), protons and light ions. The primary aim of this work is to evaluate if the dose-distributions using IMRT and protons contribute to clinical advantages. LÄS MER