Surface texture evaluation of additively manufactured metallic cellular scaffolds for acetabular implants using X-ray computed tomography

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外文摘要：The surface topography of acetabular implants plays a key role in providing cell attachment and proliferation.The measurement and characterisation of the surface texture of the cellular scaffold layer on the acetabular cup are very difficult due to the 3D nature of scaffold geometry.It is proposed to use X-ray computed tomography (XCT) to measure the surface texture of an electron beam melting-produced titanium acetabular cup.The surface texture of its cellular scaffold is evaluated using the newly developed 3D surface texture parameters,which allows surface characterisation on 3D triangular mesh surfaces.Four commonly used height parameters,i.e.the arithmetical mean height Sa,the root mean square height Sq,the skewness Ssk and the kurtosis Sku,are calculated from surface patches extracted from the XCT scanned triangular mesh surface.In addition,the surface peak density and pit density,which are more related to cell communication and proliferation,are estimated based on the 3D watershed segmentation.The Wolf pruning with an empirical threshold 12 μm is used to control the over-segmentation.

外文关键词：

Additive manufacturingCellular scaffoldSurface textureX-ray computed tomography

作者：

Shan Lou、Luca Pagani、Wenhan Zeng、Muhammad U.Ghori、Xiangqian Jiang、Paul J.Scott

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作者单位：

EPSRC Future Metrology Hub, University of Huddersfield,Queensgate, Huddersfield HD1 3DH, UK

Department of Pharmacy, University of Huddersfield,Queensgate, Huddersfield HD1 3DH, UK

基金：

authors gratefully acknowledge the UK's Engineering and Physical Sciences Research Council (EPSRC) funding of the Future AdvS.Lou would like to thank the EPSRC

项目编号：

EP/P006930/1EP/S000453/1 for funding this work

出版年：

2019

生物设计与制造(英文)

ISSN：2096-5524

年,卷(期)：2019.2(2)

被引量1
参考文献量38