Search for dissertations about: "Per-Erik Danielsson"

Found 2 swedish dissertations containing the words Per-Erik Danielsson.

  1. 1. Combining analytical and iterative reconstruction in helical cone-beam CT

    Author : Johan Sunnegårdh; Gösta Granlund; Per-Erik Danielsson; Michel Defrise; Linköpings universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cone-beam tomography; forward projection; image reconstruction; iterative reconstruction; ordered subsets; regularization; WFBP; Signal processing; Signalbehandling;

    Abstract : Contemporary algorithms employed for reconstruction of 3D volumes from helical cone beam projections are so called non-exact algorithms. This means that the reconstructed volumes contain artifacts irrespective of the detector resolution and number of projection angles employed in the process. READ MORE

  2. 2. Cone-Beam Reconstruction Using Filtered Backprojection

    Author : Henrik Turbell; Per-Erik Danielsson; Michel Defrise; Linköpings universitet; []

    Abstract : The art of medical computed tomography is constantly evolving and the last years have seen new ground breaking systems with multi-row detectors. These tomographs are able to increase both scanning speed and image quality compared to the single-row systems more commonly found in hospitals today. READ MORE