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Geometry for energy-resolved CSCT. A conventional fan-beam CT setup is completed by an additional energy-resolving detector line placed offset along the axis of rotation.
Side view of the scattering geometry. Detected photons were scattered under different angles, depending on the position of the scattering event inside the object.
Dependency of the momentum transfer from the position of the scattering event inside the object. Values are calculated for the geometry parameters used in the experiment and given for the useable energy range between 30 and . The rectangle highlights the reconstructable x range for an object with diameter.
Tomographically reconstructed images of a test object containing plastic materials in an aluminum case. (a) Transmission CT image and [(b)–(e)] CSCT images displayed at selected momentum transfers (b) , (c) , (d) , and (e) . Numbered labels are explained in the text.
Reconstructed scattering cross sections of different object regions. Values were obtained by averaging of all voxels containing the same material. (a) Cross sections of aluminum (Al), polyethylene (PE), and polyamide (PA). (b) Cross sections of polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), polytetrafluoroethylene (PTFE), and from empty voxels containing only air (background).
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