Evaluating Preoperative Models: A Methodologic Contribution.

Détails

ID Serval
serval:BIB_E9A954BB5D1F
Type
Article: article d'un périodique ou d'un magazine.
Sous-type
Etude de cas (case report): rapporte une observation et la commente brièvement.
Collection
Publications
Institution
Titre
Evaluating Preoperative Models: A Methodologic Contribution.
Périodique
World neurosurgery
Auteur(s)
Fasel J.H., Uldin T., Vaucher P., Beinemann J., Stimec B., Schaller K.
ISSN
1878-8769 (Electronic)
ISSN-L
1878-8750
Statut éditorial
Publié
Date de publication
05/2016
Peer-reviewed
Oui
Volume
89
Pages
681-685
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: ppublish
Résumé
Three-dimensional (3D) printed models of the human skull and parts of it are being increasingly used for surgical education and customized preoperative planning.
This study, using the calvaria as a model, provides a methodologic analysis with regard to future investigations aimed at evaluating patient-specific skull replicas.
Postmortem computed tomography was used for 3D reconstruction of a skull. The digital model obtained was converted to a physical replica by 3D printing. This copy was compared qualitatively and quantitatively with the original, using both a classical anthropometric and a 3D surface scanning approach.
Qualitatively, the replica and the original displayed good qualitative concordance. The quantitative deviations, as measured by osteometric tools, lay partly in the submillimetric area, partly between 1 and 2 mm. The maximum difference was 3.7 mm. On the basis of the surface scans, a mean deviation of 0.2930 mm (±0.2677 mm) and a median difference of 0.2125 mm (0.0000-1.5509 mm) were observed for the inner surface. For the whole object, corresponding figures amounted to 0.9101 mm (±0.5390 mm) and 0.8851 mm (0.000-3.2647 mm).
Qualitatively flawless replicas of the skull region investigated are feasible, subject to extensive manual CT image editing. However, neurosurgeons should be aware that models of one and the same patient will vary according to the production chain used by the 3D printing laboratory in charge. Methodologically, both classic anthropological and light-stripe-based comparisons are justified for use in future studies. For trials aimed at assessing mean deviations and topographic distribution patterns, optical 3D scanning technologies can be recommended.

Mots-clé
Anthropometry, Female, Humans, Imaging, Three-Dimensional/methods, Middle Aged, Models, Anatomic, Skull/anatomy & histology, Skull/diagnostic imaging, Tomography Scanners, X-Ray Computed, 3D printing, Anatomic models, Evaluation methods
Pubmed
Web of science
Création de la notice
30/12/2015 9:32
Dernière modification de la notice
20/08/2019 17:12
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