In this issue of the Bruker microCT Academy newsletter, we focus on scanning trajectories and the associated topic of reconstruction algorithms. The differences between circular and helical scanning are high-lighted. You will see how the quality of reconstruction and reconstruction speed are affected by using different scanning trajectories and reconstruction algorithms. As a user of our systems you can download the detailed method notes by logging in to your account.
To get suitable tomographical reconstruction data, movement of the object or source-detector pair can be done in different ways. In the simplest case, the object or source-detector pair is just rotating during the scan, creating a circular trajectory for acquisition geometry. Using more complicated movements with simultaneous or sequential rotation and translation create non-circular acquisition geometries. With special reconstruction algorithms appropriate for a particular acquisition geometry, one can significantly improve accuracy of the reconstructed results and suppress different artifacts, which may appear on reconstructions from circular scanning. In the SkyScan system range, solutions for both circular as non-circular (helical) scanning trajectories exists.