Sökning: "quality assurance QA"

Visar resultat 1 - 5 av 15 avhandlingar innehållade orden quality assurance QA.

  1. 1. Practical Implementation of Quality Assurance Guidelines for Hyperthermia Therapy

    Författare :Mattia de Lazzari; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Hyperthermia; quality assurance; tissue-mimicking phantoms;

    Sammanfattning : Hyperthermia therapy (HT) has been proven to be a potent enhancer of chemotherapy and radiotherapy in numerous clinical trials. The effectiveness of HT is strictly dependent on the administered thermal dose, which, in turn, is dependent on the quality of the therapeutic heat applied to the patient. LÄS MER

  3. 2. Quality assurance for magnetic resonance imaging (MRI) in radiotherapy

    Författare :Mary Adjeiwaah; Tufve Nyholm; Anders Garpebring; Joakim Jonsson; Sofie Ceberg; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; magnetic resonance imaging; MRI; radiotherapy; RT; geometric distortions; magnetic susceptibility; B0 maps; quality assurance; radiofysik; radiation physics;

    Sammanfattning : The use of Magnetic Resonance Imaging (MRI) in the radiotherapy (RT) treatment planning workflow is increasing. MRI offers superior soft-tissue contrast compared to Computed Tomography (CT) and therefore improves the accuracy in target volume definitions. LÄS MER

  4. 3. Facilitating Feature-Oriented Quality Assurance in Low-Maturity Variant-rich Systems

    Författare :Mukelabai Mukelabai; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Variant-Rich Systems; Cloned Projects; Quality Assurance; Feature Location; Test Case Reuse; Recommender System;

    Sammanfattning : Context: Many software systems exist in several variants customized for specific stakeholder requirements, such as different market segments or hardware constraints. This customization introduces a high level of complexity that renders traditional single-system quality assurance techniques inapplicable, since they need to consider variations and constraints between a system’s features—a. LÄS MER

  5. 4. Weighted Analysis of Microarray Experiments

    Författare :Anders Sjögren; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; DNA microarray; differential expression; gene expression; quality control QC ; quality assurance QA ; quality assessment; generalised linear model; empirical Bayes; weighted moderated statistic; invalid p-value; heteroscedasticity; WAME; heteroscedasticity;

    Sammanfattning : DNA microarrays are strikingly efficient tools for analysing gene expression for large sets of genes simultaneously. The aim is often to identify genes which are differentially expressed between some studied conditions, thereby gaining insight into which cellular mechanisms are differently active between the conditions. LÄS MER

  7. 5. Contributions to Statistical Analysis of Gene Expression Data

    Författare :Anders Sjögren; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; DNA microarray; differential expression; gene regulation; variance stabilising transformation; permutation; reference gene; housekeeping gene; bootstrap; quality control QC ; quality assurance QA ; quality assessment; empirical Bayes; weighted moderated t-statistic; WAME; DNA microarray;

    Sammanfattning : .... LÄS MER