Sökning: "Propagation-based X-ray phase-contrast Imaging"

Hittade 2 uppsatser innehållade orden Propagation-based X-ray phase-contrast Imaging.

1. 1. 2D & 3D phase retrieval for propagation-based X-ray phase-contrast tomography

   Master-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

   Författare :Philip Stjärneblad; [2021]
   Nyckelord :Propagation-based X-ray phase-contrast tomography; PB-PCT; Propagation-based X-ray phase-contrast Imaging; PB-PCI; 2d phase retrieval; 3d phase retrieval; TIE; sinogram consistency; reconstruction artefacts; Science General;

   Sammanfattning : Propagation-based X-ray phase-contrast tomography is a 3d imaging technique that utilizes two-dimensional projections from different angular views $\theta =[0,\pi]$ to reconstruct the 3D object information. The phase-contrast allows for higher feature contrast than conventional transmission tomography, as the phase interference gives rise to a sharp edge contrast. LÄS MER

3. 2. Iterative Reconstruction Algorithm for Phase-Contrast X-Ray Imaging

   Kandidat-uppsats, KTH/Medicinteknik och hälsosystem

   Författare :Ahmad Sadek; Ruben Pozzi; [2020]
   Nyckelord :Computed tomography; Medical research; Phase-contrast imaging; Propagation-based imaging; SIRT; Iterative algorithm; Paganin’s phase-retrieval; Datortomografi; Medicinsk forskning; Faskontrastavbildning; Propagation-baserad avbildning; SIRT; Iterativ algoritm; Paganins fasåterhämtning;

   Sammanfattning : Phase-contrast imaging (PCI) is a modality of medical x-ray imaging that can solve one of the main limitations with conventional attenuation-based imaging: the imaging of materials with low attenuation coefficients, such as soft tissues. A modality of PCI, Propagation-based phase-contrast imaging (PBI), was used in this project. LÄS MER