Figure 3
Helical scan of a LEGO-like block phantom. (a) The phantom made from LEGO-like bricks l mounted on a hexapod h on top of the described endstation for large specimens e. In the background the slits s, a filter wheel w and an additional aluminium absorber plate a are shown. The two latter were used to reduce the flux to reach clinically relevant X-ray doses. (b) 3D-rendering of the acquired data – approximately four full rotations. (c) Central slice of the reconstructed data, without any artifacts or distortions. |