Sökning: "adaptive radiation therapy"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden adaptive radiation therapy.

  1. 1. Toward Robust Optimization of Adaptive Radiation Therapy

    Författare :Michelle Böck; Anders Forsgren; Minsun Kim; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; optimization; adaptive radiation therapy; radiation therapy treatment planning; uncertainty; robust optimization; stochastic programming; Tillämpad matematik och beräkningsmatematik; Applied and Computational Mathematics;

    Sammanfattning : Adaptive radiation therapy is an evolving cancer treatment approach which relies on adapting the treatment plan in response to patient-specific interfractional geometric variations occurring during the fractionated treatment. If those variations are not addressed through adaptive replanning, the resulting treatment quality may be compromised. LÄS MER

  3. 2. Development of improved radiation therapy techniques using narrow scanned photon beams

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

    Sammanfattning : 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. LÄS MER

  4. 3. New Efficient Detector for Radiation Therapy Imaging using Gas Electron Multipliers

    Författare :Janina Östling; Mats Danielsson; Anders Brahme; Fabio Sauli; Stockholms universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Portal imaging; Gas Electron Multiplier; Gas detector; Medical engineering; Medicinsk teknik;

    Sammanfattning : Currently film is being replaced by electronic detectors for portal imaging in radiation therapy. This development offers obvious advantages such as on-line quality assurance and digital images that can easily be accessed, processed and communicated. LÄS MER

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

    Författare :Marta Lazzeroni; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : 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. LÄS MER

  7. 5. Optimising External Beam Radiotherapy for Prostate Cancer. Advances in Treatment Planning

    Författare :Vilberg Jóhannesson; Systemisk strålterapi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Sammanfattning : BackgroundRadiotherapy (RT) is an effective treatment option for prostate cancer (PCa). The evolution of new treatment planning techniques, advanced imaging and accelerator design has enabled precise treatment delivery. LÄS MER