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
