Essays about: "punktspridningsfunktion"

Found 2 essays containing the word punktspridningsfunktion.

  1. 1. Learning the Forward Operator in Photon-Counting Computed Tomography

    University essay from KTH/Matematik (Avd.)

    Author : Emanuel Ström; [2021]
    Keywords : Photon-Counting; Computed Tomography; Spectral CT; Regularisation; Deep Learning; Fotonräknande; Datortomografi; Spektral CT; Regularisering; Djupinlärning;

    Abstract : Computed Tomography (CT) is a non-invasive x-ray imaging method capable of reconstructing highly detailed cross-sectional interior maps of an object. CT is used in a range of medical applications such as detection of skeletal fractures, organ trauma and artery calcification. READ MORE

  3. 2. Correction for partial volume effects in PET imaging

    University essay from Radiofysik; Institutionen för fysik

    Author : Elin Wallstén; [2011]
    Keywords : PET; partial volume effects; PVE; recovery coefficients; deconvolution; point spread function; PSF; PET; partiella volymseffekter; pve; avfaltning; punktspridningsfunktion; PSF;

    Abstract : The limited spatial resolution in positron emission tomography (PET) images leads to difficulties to measure correct uptake in tumours. This is called partial volume effects (PVE) and can lead to serious bias, especially for small tumours. Correct uptake values are valuable for evaluating therapies and can be used as a tool for treatment planning. READ MORE