Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2013 Jan;24(1):231-9.
doi: 10.1007/s10856-012-4778-0. Epub 2012 Oct 7.

Artifact Level Produced by Different Femoral Head Prostheses in CT Imaging: Diamond Coated Silicon Nitride as Total Hip Replacement Material

Affiliations

Artifact Level Produced by Different Femoral Head Prostheses in CT Imaging: Diamond Coated Silicon Nitride as Total Hip Replacement Material

Simone P Rodrigues et al. J Mater Sci Mater Med. .

Erratum in

  • J Mater Sci Mater Med. 2013 Jan;24(1):267

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.

Similar articles

See all similar articles

Cited by 1 article

References

    1. J Orthop Sci. 2004;9(1):10-5 - PubMed
    1. Int J Radiat Oncol Biol Phys. 2005 Jul 15;62(4):1224-31 - PubMed
    1. J Arthroplasty. 2009 Jan;24(1):110-6 - PubMed
    1. Radiographics. 2004 Nov-Dec;24(6):1679-91 - PubMed
    1. J Comput Assist Tomogr. 1997 Mar-Apr;21(2):293-8 - PubMed

Publication types

LinkOut - more resources

Feedback