Regensburg 2019 – wissenschaftliches Programm

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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 13: Microscopy, Tomography and Spectroscopy with X-ray Photons, Electrons, Ions and Positrons (joint session KFM/HL)

KFM 13.2: Vortrag

Mittwoch, 3. April 2019, 09:50–10:10, H47

X-ray phase-contrast micro-CT of biological tissues at a rotating anode source — •Jasper Frohn and Tim Salditt — Institut für Röntgenphysik, Göttingen

X-ray phase-contrast offers the possibility of enhancing the image contrast for low absorbing materials such as biological soft tissues. Applied in a tomographic setup, the phase-contrast can be utilized to investigate the structure of such samples in 3d in a non-invasive way. One method to realize phase contrast images is "propagation-based imaging (PBI)", which is based on the free space propagation from the sample to the detector. To perform PBI tomography inhouse, x-ray sources are required with a certain degree of coherence. We were able to establish a high resolving propagation-based phase-contrast tomographic setup at a microfocus x-ray source with a rotating copper anode in our laboratory. The 3d resolution is in the range of few micrometers, achieved with a high resolving detector in inverse geometry. Results will be presented and compared with the synchrotron tomography endstation "GINIX" (P10 at PETRA III/DESY).