Sökning: "dose constraint"

Hittade 4 uppsatser innehållade orden dose constraint.

  1. 1. Proton Arc Therapy Optimization

    Master-uppsats, KTH/Optimeringslära och systemteori

    Författare :Cecilia Battinelli; [2019]
    Nyckelord :;

    Sammanfattning : Cancer is ranked among the leading causes of death in the world. During the last decades, the development of advanced cancer treatment software has had an increasingly important role in its treatment. To treat cancer, there are many different therapies, one of which is radiation therapy. LÄS MER

  3. 2. Effect of bladder volume changes and verification of CTV on CBCT for rectal cancer patients

    Master-uppsats, Lunds universitet/Medicinsk strålningsfysik, Lund; Lunds universitet/Sjukhusfysikerutbildningen

    Författare :Lina Andersson; [2016]
    Nyckelord :Medicine and Health Sciences;

    Sammanfattning : Background and purpose: During radiotherapy, rectal cancer patients show inter-fractional internal motion that effects the delivered dose distribution. The purpose of this work is to study I) the inter-fractional bladder volume change, II) the effect of bladder volume change on bowel dose distribution, III) the effect of bladder optimization on the relationship between bladder volume and bowel dose and IV) the possibilities and difficulties of validating the clinical target volume (CTV) using a surrogate on cone-beam computed tomography (CBCT) scans. LÄS MER

  4. 3. Accuracy of MLC-tracking for inversely optimized arc therapy treatments of varying complexity for two MLCs

    Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

    Författare :Tobias Larsson; [2010]
    Nyckelord :Strålterapi; Medicine and Health Sciences;

    Sammanfattning : En mycket vanlig behandlingsteknik vid cancer är strålbehandling. Tekniken har utvecklats snabbt de senaste åren och idag uppnås millimeterprecision för många behandlingsområden. Därmed har behovet av att kunna kompensera för rörelser under behandlingen ökat. LÄS MER

  5. 4. Empirical measurements to ensure compliance with post therapy dose constraints to family members of radioiodine therapy patients

    Uppsats för yrkesexamina på grundnivå, Medicinsk strålningsfysik (tills m KI)

    Författare :Itembu Lannes; [2007]
    Nyckelord :Radioiodine therapy; TLD; dose constraint;

    Sammanfattning : Radioiodine has been used in nuclear medicine for the treatment of thyroid diseases such as Thyroid Cancer and Thyrotoxicosis for many years. The treatment renders the patient radioactive. To minimize the dose to the patients’ relatives and the general public, restric-tions are imposed on the behaviour of the patient. LÄS MER