Principle

X-ray sources produce a polychromatic spectrum which is altered
when interacting with the sample. Due to this alteration, cupping
effects in the reconstructed data of a CT scan. In extreme cases,
such as when metal objects are present in the sample, more severe
artefacts occur at the location of the metallic components. Also
when the X-ray photon do not succeed to get through the metal
(photon starvation), incorrect representation of the sample occurs
in the reconstructed data.

Tasks


Evaluate beam hardening and improve the results

Evaluate metal artefacts


What you can learn about


Beam hardening

Cupping effect

Beam hardening correction

Metal artefacts

Photon starvation