Sökning: "treatment planning algorithms"

Visar resultat 1 - 5 av 21 avhandlingar innehållade orden treatment planning algorithms.

  1. 1. Beam Modelling for Treatment Planning of Scanned Proton Beams

    Författare :Peter Kimstrand; Bengt Glimelius; Erik Traneus; Nina Tilly; Anders Ahnesjö; Thomas Bortfeld; Uppsala universitet; []
    Nyckelord :Radiation sciences; proton therapy; treatment planning; beam modelling; dose calculation; Monte Carlo; Strålningsvetenskap;

    Sammanfattning : Scanned proton beams offer the possibility to take full advantage of the dose deposition properties of proton beams, i.e. the limited range and sharp peak at the end of the range, the Bragg peak. LÄS MER

  3. 2. Development and application of composite energy deposition kernels for photon therapy planning

    Författare :Anders Eklöf; Simo Hyödynmaa; Stockholms universitet; []
    Nyckelord :Energy deposition kernels; volume overlap algorithm; radiotherapy planning; photon pencil beams; treatment optimization; biological treatment objectives; medicinsk strålningsfysik; Medical Radiation Physics;

    Sammanfattning : In recent years, the use of optimization algorithms in radiation therapy planning has increased dramatically. All optimization algorithms as well as most modern implementations of conventional therapy planning, use energy deposition kernels as a fundamental part of the calculations. LÄS MER

  4. 3. Optimization of brachytherapy for cervical cancer using inverse planning algorithms

    Författare :Lucilio dos Santos Matias; Iuliana Toma-Dasu; Brígida da Costa Ferreira; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Brachytherapy; treatment planning optimization; IPSA; HIPO; radiobiology; complicationfree; medicinsk strålningsfysik; Medical Radiation Physics;

    Sammanfattning : Carcinoma of the cervix is a global problem. Brachytherapy (BT) is one of the mainradiation therapy components used in the management of cervical cancer. LÄS MER

  5. 4. Comparative treatment planning in external radiotherapy of malignant tumours : Potential gains using protons

    Författare :Ulf Isacsson; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Oncology; Breast cancer; comparative treatment; Ewing sarcoma; oesophageal cancer; protontherapy; radiotherapy; rectal cancer; treatment planning algorithms; Onkologi; Oncology; Onkologi; Oncology; onkologi;

    Sammanfattning : It is well known that protons have physical characteristics superior to conventional radiation qualities in external beam radiotherapy. The primary aim of this work is to determine if the physical advantages also may lead to clinical advantages. LÄS MER

  7. 5. Verification of Dose Calculation Algorithms in Treatment Planning Systems for External Radiation Therapy: A Monte Carlo Approach

    Författare :Elinore Wieslander; Lund Medicinsk strålningsfysik; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; radiologi; tomografi; medicinsk instrumentering; radiotherapy; dose calculation algorithm; verification; Monte Carlo calculation; electron beam; photon beam; Clinical physics; radiology; tomography; medical instrumentation; Klinisk fysiologi; treatment planning system;

    Sammanfattning : This thesis presents a new verification concept, the virtual accelerator, for dose calculation algorithms used in treatment planning systems (TPSs) for external beam radiotherapy. The algorithm input data required to implement a treatment unit in the TPS are generated by Monte Carlo simulations as are the beam reference data needed for the subsequent evaluation of the dose calculation algorithm. LÄS MER