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J. Imaging 2017, 3(4), 45; https://doi.org/10.3390/jimaging3040045

The Accuracy of 3D Optical Reconstruction and Additive Manufacturing Processes in Reproducing Detailed Subject-Specific Anatomy

1
Mathematical Modelling in Medicine Group, Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield S10 2RX, UK
2
Insigneo Institute for In Silico Medicine, University of Sheffield, Sheffield S1 3JD, UK
*
Author to whom correspondence should be addressed.
Received: 31 August 2017 / Revised: 27 September 2017 / Accepted: 6 October 2017 / Published: 12 October 2017
(This article belongs to the Special Issue Three-Dimensional Printing and Imaging)
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Abstract

3D reconstruction and 3D printing of subject-specific anatomy is a promising technology for supporting clinicians in the visualisation of disease progression and planning for surgical intervention. In this context, the 3D model is typically obtained from segmentation of magnetic resonance imaging (MRI), computed tomography (CT) or echocardiography images. Although these modalities allow imaging of the tissues in vivo, assessment of quality of the reconstruction is limited by the lack of a reference geometry as the subject-specific anatomy is unknown prior to image acquisition. In this work, an optical method based on 3D digital image correlation (3D-DIC) techniques is used to reconstruct the shape of the surface of an ex vivo porcine heart. This technique requires two digital charge-coupled device (CCD) cameras to provide full-field shape measurements and to generate a standard tessellation language (STL) file of the sample surface. The aim of this work was to quantify the error of 3D-DIC shape measurements using the additive manufacturing process. The limitations of 3D printed object resolution, the discrepancy in reconstruction of the surface of cardiac soft tissue and a 3D printed model of the same surface were evaluated. The results obtained demonstrated the ability of the 3D-DIC technique to reconstruct localised and detailed features on the cardiac surface with sub-millimeter accuracy. View Full-Text
Keywords: 3D reconstruction; digital image correlation (DIC); geometric discrepancies; additive manufacturing; soft tissues; shape measurements 3D reconstruction; digital image correlation (DIC); geometric discrepancies; additive manufacturing; soft tissues; shape measurements
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Ferraiuoli, P.; Taylor, J.C.; Martin, E.; Fenner, J.W.; Narracott, A.J. The Accuracy of 3D Optical Reconstruction and Additive Manufacturing Processes in Reproducing Detailed Subject-Specific Anatomy. J. Imaging 2017, 3, 45.

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