Sökning: "volume definition"

Visar resultat 1 - 5 av 60 avhandlingar innehållade orden volume definition.

  1. 1. Ensuring the intended volume is given the intended absorbed dose in radiotherapy: Managing geometric variations and treatment hazards

    Författare :Ola Holmberg; Malmö Medicinsk strålningsfysik; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; medical instrumentation; tomography; radiology; Clinical physics; safety; risk; hazard; organ motion; set-up; margins; volume definition; radiotherapy; accuracy; Klinisk fysiologi; radiologi; tomografi; medicinsk instrumentering; Radiopharmaceutical technology; Radiofarmaceutisk teknik;

    Sammanfattning : Methods for ensuring that the intended volume receives the intended absorbed dose in radiotherapy have been investigated. In order to optimise radiation treatment of cancer, geometric variations in the treatment chain need to be controlled. Furthermore, hazards potentially leading to unintended irradiation need to be controlled. LÄS MER

  3. 2. Development of a Whole Body Atlas for Radiation Therapy Planning and Treatment Optimization

    Författare :Sharif Qatarneh; Anders Brahme; Bengt Lind; Anders Ahnesjö; Stockholms universitet; []
    Nyckelord :3D whole body atlas; lymph node topography; matching transformation; radiation therapy planning; radiobiological optimization; segmentation; target volume definition; medicinsk strålningsfysik; Medical Radiation Physics;

    Sammanfattning : The main objective of radiation therapy is to obtain the highest possible probability of tumor cure while minimizing adverse reactions in healthy tissues. A crucial step in the treatment process is to determine the location and extent of the primary tumor and its loco regional lymphatic spread in relation to adjacent radiosensitive anatomical structures and organs at risk. LÄS MER

  4. 3. Iodine status and iodine pool an a small community in western Sweden

    Författare :Mille Milakovic; Göteborgs universitet; []
    Nyckelord :goitre; thyroid volume; ultrasonography; urinary iodine; TpoAb; TSH; iodine supplementation; radioiodine uptake; scintigraphy; XRF;

    Sammanfattning : Iodine is essential in the synthesis of the vital hormones of the thyroid gland. On a worldwide basis, iodine deficiency is the global most important cause of thyroid disease. LÄS MER

  5. 4. Modeling of Energy-Efficient Robots for Lightweight, High Volume Assembly : Concepts and Optimization

    Författare :Sten Grahn; Björn Langbeck; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Commercial and environmental demands put constant pressure on robot manufacturers to improve the efficiency of the robots they produce. Satisfying answers to efficiency questions can have a major impact on both manufacturers and users. LÄS MER

  7. 5. Pancreatic Cancer - Early Detection, Prognostic Factors, and Treatment

    Författare :Daniel Ansari; Lund Kirurgi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; artificial neural networks; apicidin; centralization; early detection; epigenetics; high definition mass spectrometry; MUC4; pancreatic cancer; pancreaticoduodenectomy; prognostic factors; xenograft model; treatment;

    Sammanfattning : Background: Pancreatic cancer is the fourth leading cause of cancer-related death. Only about 6% of patients are alive 5 years after diagnosis. One reason for this low survival rate is that most patients are diagnosed at a late stage, when the tumor has spread to surrounding tissues or distant organs. LÄS MER