Markus Firsching

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Spectral CT differs from dual-energy CT by using a conventional X-ray tube and a photon-counting detector. We wished to produce 3D spectroscopic images of mice that distinguished calcium, iodine and barium. We developed a desktop spectral CT, dubbed MARS, based around the Medipix2 photon-counting energy-discriminating detector. The single conventional X-ray(More)
The field of sea freight container inspection has been driven by the U.S. home resolution number one “H.R.1” in the last decade. This law motivated various major research projects inside and outside Europe. The Fraunhofer Development Center X-ray Technology EZRT in Fürth / Germany was partner in ECSIT a three-year project funded by the German ministry for(More)
IO N X-ray imaging is an established method for the characterization of material samples. Two-dimensional, radiographic methods as well as three-dimensional computed tomography are used very successfully in many fi elds. However both usually have a drawback: They provide only qualitative information rather than quantitatively exact physical properties. Thus(More)
Dual-energy X-ray imaging in the keV range is a well-known technique e.g. used in baggage scanning. It requires two measurements at different energies and/or detector efficiencies and allows displaying material properties as the effective atomic number and mass density. The method thus provides the information allowing identifying illicit materials such as(More)
While the expenses for computational power decrease, iterative reconstruction methods for x-ray computed tomography (CT) that allow the use of improved model assumptions, become more attractive. In applications for non-destructive testing one of the most common degradations of image quality with standard x-ray CT reconstruction methods is beam hardening.(More)
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