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Aneurysm clips in brain imaging using CBCT: the development of a phantom and the influence of kvp and metal suppression on image quality

2017Book part Open access
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dc.contributor.authorHarsaker, V.
dc.contributor.authorButtazzoni, M.
dc.contributor.authorCardoso, Ângela
dc.contributor.authorKnijff, A.
dc.contributor.authorMookrey, T.
dc.contributor.authorSafai, O.
dc.contributor.authorBuissink, C.
dc.date.accessioned2018-12-28T21:35:50Z
dc.date.available2018-12-28T21:35:50Z
dc.date.issued2017
dc.description.abstractPurpose: For this study, a phantom was produced to evaluate the influence of kVp and metal suppression on the image quality in CBCT brain imaging containing titanium aneurysm clips. Method and material: A head phantom was constructed comprising of a pig skull with its neurocranium filled with butter to simulate the human brain. CBCT was used to scan the phantom. Three different aneurysm clips were used (two in different sizes and one with a different size and shape). Acquisitions were made using different values of kVp (80, 84, 88, 92, 96). Each acquisition was reconstructed in every anatomical plane, with and without metal suppression. For post-processing, ImageJ was used to place ROIs in specific areas. Standard deviation, representing noise; data was analysed using T-tests. Results: The phantom was suitable for aneurysm implant placement. The noise is most severe in the axial plane (p<0.05) and the larger clips produced more noise. Metal suppression resulted in a significant reduction of noise in all three planes (p<0.05). Compared to metal suppression, the reduction in noise with an increase in kVp is minimal. Conclusion: Metal suppression is effective in reducing metal artefacts in CBCT brain imaging.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationHarsaker V, Buttazzoni M, Cardoso A (Ângela), Knijff A, Mookrey T, Safai O, et al. Aneurysm clips in brain imaging using CBCT: the development of a phantom and the influence of kvp and metal suppression on image quality. In: Meijer A, Buissink C, Hogg P, editors. OPTIMAX 2017: optimising image quality for medical image. Oslo: Akershus University College; 2017. p. 93-104.pt_PT
dc.identifier.isbn9781912337095
dc.identifier.urihttp://hdl.handle.net/10400.21/9217
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherAkershus University Collegept_PT
dc.relation.publisherversionhttp://usir.salford.ac.uk/46104/7/OPTIMAX%202017%20ed.pdfpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectRadiologypt_PT
dc.subjectAneurysm clippt_PT
dc.subjectArtefactspt_PT
dc.subjectCBCTpt_PT
dc.subjectImage qualitypt_PT
dc.subjectMetal suppressionpt_PT
dc.subjectPhantompt_PT
dc.titleAneurysm clips in brain imaging using CBCT: the development of a phantom and the influence of kvp and metal suppression on image qualitypt_PT
dc.typebook part
dspace.entity.typePublication
oaire.citation.endPage104pt_PT
oaire.citation.startPage93pt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typebookPartpt_PT

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