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Visar resultat 1 - 5 av 18 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Methods for selection and optimisation of radiotherapy and early therapy evaluation in breast cancer

    Författare :Tomas Jansson; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Oncology; Breast cancer; human; radiotherapy; multi-leaf collimator; breast-conservingsurgery; local recurrence; p53; positron emission tomography; chemotherapy evaluation; Onkologi; Oncology; Onkologi; Oncology; onkologi;

    Sammanfattning : Adjuvant systemic therapy for breast cancer, the most common malignancy in females, increases survival and this has recently also been demonstrated for postoperative radiotherapy. The aims of this study were to develop an optimised radiotherapeutic technique for postoperative treatment, to analyse the association between p53 status in node-negative patients and radiotherapy, to investigate the incidence of in-breast relapses after conservative surgery and radiotherapy and to determine if positron emissiontomography could be useful for early evaluation of polychemotherapy. LÄS MER

  3. 2. On perfusion estimation using ultrasound

    Författare :Tomas Jansson; Avdelningen för Biomedicinsk teknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Instrumentation technology; Speckle; Artifacts; Perfusion; Ultrasound; Doppler; Mät- och instrumenteringsteknik;

    Sammanfattning : This thesis has the main focus on ways to improve the blood perfusion estimate, as obtained from a continuous wave Doppler system. Earlier studies have shown large temporal variations in the detected perfusion estimate, due to speckle. LÄS MER

  4. 3. Agila projektledningsmetoder och motivation : Varför man blir produktiv av att flytta lappar på en whiteboard

    Författare :Tomas Jansson; John Sören Pettersson; Bjørnar Tessem; Karlstads universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Agile methods; systems development; project management; motivation; creativity; agila metoder; systemutveckling; projektledning; motivation; kreativitet; Information Systems; Informatik; Projektledning; Projektledning;

    Sammanfattning : Agile methods for Information Systems Development (ISD) projects are claimed to encourage developers to be more flexible and efficient by means of arrangements in the development team’s physical and social environment. Research has, however, not yet answered the questions of how, why, and in what contexts agile methods work. LÄS MER

  5. 4. Computerized Alignment and Deformation Correction of Microscopic Serial Section Images of Nervous Tissue

    Författare :Tomas Jansson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This thesis describes an investigation into digital techniques for image alignment and deformation correction with special reference to serial light and electron microscopic images. These techniques are applied in three-dimensional (3D) reconstruction of nervous tissue, especially the superficial gray matter of the brain - cortex cerebri. LÄS MER

  7. 5. Optimization of sheet metal forming processes

    Författare :Tomas Jansson; Karl Brian Nielsen; Linköpings universitet; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : The potential of using simulation and optimization techniques in the design of sheet metal forming processes has been investigated. Optimization has been used in a variety of sheet metal forming applications. LÄS MER