Background and purpose Two techniques for metal artefact reduction for computed
tomography were studied in order to identify their impact on tumour delineation in
radiotherapy. Materials and methods Using specially designed phantoms containing metal
implants (dental, spine and hip) as well as patient images, we investigated the impact of two
methods for metal artefact reduction on (A) the size and severity of metal artefacts and the
accuracy of Hounsfield Unit (HU) representation,(B) the visual impact of metal artefacts on …