Sökning: "volumetric image analysis"

Visar resultat 16 - 20 av 22 avhandlingar innehållade orden volumetric image analysis.

  1. 16. Optical Diagnostics of Reactive Flows : Application of 3D emission tomography and laser-based methods

    Författare :David Sanned; Förbränningsfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysicumarkivet A:2023:Sanned;

    Sammanfattning : Nowadays, numerous specialized systems, ranging from electronics to energy production processes can be found both in science and industry. However due to their specialized nature they often exhibit high sensitivity to intrusive measurements, which can potentially perturb the sought-after characteristics or quantity and consequently compromise overall accuracy. LÄS MER

  3. 17. 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. 18. Multidimensional MRI  of Myocardial Dynamics : Acquisition, Reconstruction and Visualization

    Författare :Andreas Sigfridsson; Hans Knutsson; Sebastian Kozerke; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MRI; Cardiac motion; myocardial dynamics; strain; tensor; deformation; DENSE; k-t BLAST; Medical engineering; Medicinsk teknik;

    Sammanfattning : Methods for measuring deformation and motion of the human heart in-vivo are crucial in the assessment of cardiac function. Applications ranging from basic physiological research, through early detection of disease to follow-up studies, all rely on the quality of the measurements of heart dynamics. LÄS MER

  5. 19. Reliability, replicability and reproducibility in PET imaging

    Författare :Granville James Matheson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Positron Emission Tomography (PET) is a non-invasive biomedical imaging method which can quantify biochemical markers as well as functional and metabolic activity in vivo. Following image analysis, quantification can be performed using various pharmacokinetic models, or using simplified semi-quantitative methods. LÄS MER

  7. 20. Acoustic manipulation for cell and spheroid cellomics

    Författare :Karl Olofsson; Martin Viklund; Maria Tenje; KTH; []
    Nyckelord :Biological and Biomedical Physics; Biologisk och biomedicinsk fysik;

    Sammanfattning : Ultrasonic standing wave (USW) particle manipulation has during the last two decades matured into a valuable tool to combine with microfluidics. Acoustophoresis, migration through sound, is the result of the acoustic radiation force acting on particles suspended in an acoustic field. LÄS MER