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3D printed soft surgical planning prototype for a biliary tract rhabdomyosarcoma

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ResearchArticle_specialissue_revision.pdf (2,955Mb)
 
10.1016/j.jmbbm.2020.103844
 
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hdl:2117/330862

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Tejo Otero, AitorMés informacióMés informació
Lustig, Pamela
Fenollosa i Artés, FelipMés informacióMés informacióMés informació
Valls, Arnau
Krauel, Lucas
Buj Corral, IreneMés informacióMés informacióMés informació
Document typeArticle
Defense date2020-05-11
PublisherElsevier
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
This work is protected by the corresponding intellectual and industrial property rights. Except where otherwise noted, its contents are licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
Biliary tract rhabdomyosarcoma is a soft tissue malignant musculoskeletal tumor which is located in the biliary tract. Although this tumor represents less than 1% of the total amount of childhood cancers, when localized, a >70% overall 5-year survival rate, the resection is clinically challenging and complications might exist during the biliary obstruction. Although surgery remains a mainstay, complete tumor resection is generally difficult to achieve without mutilation and severe long-term sequelae. Therefore, manufacturing multi-material 3D surgical planning prototypes of the case provides a great opportunity for surgeons to learn beforehand what they can expect. Additionally, practicing before the operation enhances the probability of success. That is why different compositions of materials have been characterized to match the mechanical properties of the liver. To do this, Dynamic Mechanical Analysis (DMA) tests and Shore hardness tests have been carried out. Amongst the material samples produced, 6%wt PVA (poly vinyl alcohol)/1%wt PHY (Phytagel)-1FT (Freeze-Thaw cycles) and 1%wt agarose appear as the best options for mimicking the liver tissue in terms of viscoelasticity. Regarding the Shore hardness, the best solution is 1%wt agarose. Additionally, a surgical planning prototype using this last material mentioned was manufactured and validated using a CT (Computed Tomography) scanner. In most of the structures the difference between the 3D model and the organ in terms of dimensions is less than 3.35 mm, which represents a low dimensional error, around 1%. On the other hand, the total manufacturing cost of the 3D physical model was €513 which is relatively low in comparison with other technologies.
CitationTejo, A. [et al.]. 3D printed soft surgical planning prototype for a biliary tract rhabdomyosarcoma. "Journal of the mechanical behavior of biomedical materials", 11 Maig 2020, vol. 109, p. 103844/1-103844/11. 
URIhttp://hdl.handle.net/2117/330862
DOI10.1016/j.jmbbm.2020.103844
ISSN1751-6161
Publisher versionhttps://www.sciencedirect.com/science/article/abs/pii/S1751616120303982
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  • Departament d'Enginyeria mecànica - Articles de revista [668]
  • Doctorat en Enginyeria Mecànica, Fluids i Aeronàutica - Articles de revista [189]
  • TECNOFAB - Grup de Recerca en Tecnologies de Fabricació - Articles de revista [223]
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