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. 2017 Jun 6;90(1074):20160859. doi: 10.1259/bjr.20160859

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© 2017 The Authors. Published by the British Institute of Radiology

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Figure 9. — Usefulness of dual-energy CT in the presence of streak artefacts: (a) the axial contrast-enhanced weighted average image shows asymmetric enlargement of the right parotid gland with suggestion of an enhancing mass (arrow) hidden by the streak artefacts arising from dental prosthesis. (b) The axial high-energy virtual monochromatic (95 keV) image reduces artefacts over the mass, making it more conspicuous. (c) The bone removal image helps by removing the distracting artefacts. The mass was confirmed to be a pleomorphic adenoma.