Artifact level produced by different femoral head prostheses in CT imaging: diamond coated silicon nitride as total hip replacement material
authors Rodrigues, SP; Paiva, JM; De Francesco, S; Amaral, MI; Oliveira, FJ; Silva, RF
nationality International
journal JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE
keywords ALTERNATIVE MATERIALS; RECONSTRUCTION; CYTOTOXICITY; RADIOTHERAPY; REDUCTION; IMPLANTS
abstract Commercial femoral head prostheses (cobalt-chromium alloy, yttria partially stabilized zirconia (Y-PSZ) and alumina) and new silicon nitride ceramic ones (nanocrystalline diamond coated and uncoated) were compared in terms of artifact level production by computed tomography (CT). Pelvis examination by CT allows the correct diagnosis of some pathologies (e.g. prostate and colon cancer) and the evaluation of the prosthesis-bone interface in post-operative joint surgery. Artifact quantification is rarely seen in literature despite having a great potential to grade biomaterials according to their imaging properties. Materials' characteristics (density and effective atomic number), size and geometry of the prostheses can cause more or less artifact. A quantification procedure based on the calculation of four statistical parameters for the Hounsfield pixel values (mean, standard deviation, mean squared error and worst case error) is presented. CT sequential and helical scanning modes were performed. Results prove the artifact reproducibility and indicate that the cobalt-chromium and Y-PSZ are the most artifact-inducing materials, while alumina and silicon nitride (diamond coated and uncoated) ceramic ones present a low level of artifact. Considering the excellent biocompatibility and biotribological behaviour reported in earlier works, combined with the high medical imaging quality here assessed, diamond coated silicon nitride ceramics are arising as new materials for joint replacement.
publisher SPRINGER
issn 0957-4530
year published 2013
volume 24
issue 1
beginning page 231
ending page 239
digital object identifier (doi) 10.1007/s10856-012-4778-0
web of science category Engineering, Biomedical; Materials Science, Biomaterials
subject category Engineering; Materials Science
unique article identifier WOS:000313368900023
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journal analysis (jcr 2019):
journal impact factor 2.489
5 year journal impact factor 2.832
category normalized journal impact factor percentile 42.022
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