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SM Journal of Biomedical Engineering

Quantitative Evaluation of 3D Printed Anatomical Objects: A Comparison of Optical Surface Scanning and Micro Computed Tomography

[ ISSN : 2573-3702 ]

Abstract
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Received: 17-Aug-2017

Accepted: 22-Aug-2017

Published: 29-Aug-2017

Research Article | Volume 3 - Issue 3 | Article DOI :

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Jean HD Fasel¹*, Anne-Sophie Knoepfli², Diego San Millan³, Roland Ramm⁴, and Peter Kühmstedt⁴

¹Department of Cell Physiology and Metabolism and Surgery, University Medical Centre and Hospitals, Geneva, Switzerland
²Department of Radiology, Clinique de Genolier, Switzerland
³Centre Hospitalier du Centre du Valais, Service d’imagerie diagnostique et interventionnelle, Sion, Switzerland
?Fraunhofer Institute for Applied Optics and Precision Engineering IOF, Jena, Germany

Corresponding Author:

Jean HD Fasel, Clinical Anatomy Research Group, Departments of Cell Physiology and Metabolism, and Surgery, University Medical Centre and Hospitals, Rue M. Servet 1, CH - 1211 Geneva, Switzerland, Tel: +41 22 379 53 18; Email: jean.fasel@unige.ch

Keywords

3D printing, Additive manufacturing, Anatomical models, Optical surface scanning, Micro computed tomography

Abstract

Additive manufacturing technologies are increasingly used for medical purposes. However, questions are regularly raised about the accuracy of the anatomical models thus obtained. The present study compares two investigative methods that are used for assessing the degree of trueness of 3D printed replicas and presents recommendations for future analyses. The two techniques compared are optical surface scanning by structured light (OSS) and micro-computed tomography (µCT). The comparison was made by investigating an original cranial vault and its replica obtained by selective laser sintering (Eosint P 385, EOS GmbH, Krailling, Germany). OSS tests were conducted using a kolibri Cordless scanner (Fraunhofer IOF, Jena, Germany); µCT was performed with a v?tome?x 240/180 machine (phoenix?x-ray, GE, Wunstorf, Germany). The degree of trueness of the replica was assessed with an iterative closest point algorithm (Geomagic Qualify software, Version 12, Geomagic GmbH, 3D Systems, Rock Hill, USA).The replica’s deviations from the original, measured by OSS and µCT, respectively, were as follows: Homogeneous enlargement factor: 1.3% vs 1.2%; Mean shape deviation: +0.27mm (±0.15mm) vs +0.24mm (±0.23mm); Shape deviation

Citation

Fasel JHD, Knoepfli AS, Millan DS, Ramm R and Kühmstedt P. Quantitative Evaluation of 3D Printed Anatomical Objects: A Comparison of Optical Surface Scanning and Micro-Computed Tomography. SM J Biomed Eng. 2017; 3(3): 1021.