Technical data

Beam hardening and metal artefacts

Article no: P2550805

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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

Learning objectives

Beam hardening
Cupping effect
Beam hardening correction
Metal artefacts
Photon starvation

Scope of delivery

XR 4.0 expert unit, 35 kV	09057-99	1
XR 4.0 X-ray Plug-in with copper tube (Cu)	09057-51	1
XR 4.0 X-ray Upgrade Set Computed Tomography	09185-88	1