Patient-specific neurosurgical phantom: assessment of visual quality, accuracy, and scaling effects

3D Printing in Medicine
Felipe Wilker GrilloAntonio Adilton Oliveira Carneiro

Abstract

Training in medical education depends on the availability of standardized materials that can reliably mimic the human anatomy and physiology. One alternative to using cadavers or animal bodies is to employ phantoms or mimicking devices. Styrene-ethylene/butylene-styrene (SEBS) gels are biologically inert and present tunable properties, including mechanical properties that resemble the soft tissue. Therefore, SEBS is an alternative to develop a patient-specific phantom, that provides real visual and morphological experience during simulation-based neurosurgical training. A 3D model was reconstructed and printed based on patient-specific magnetic resonance images. The fused deposition of polyactic acid (PLA) filament and selective laser sintering of polyamid were used for 3D printing. Silicone and SEBS materials were employed to mimic soft tissues. A neuronavigation protocol was performed on the 3D-printed models scaled to three different sizes, 100%, 50%, and 25% of the original dimensions. A neurosurgery team (17 individuals) evaluated the phantom realism as "very good" and "perfect" in 49% and 31% of the cases, respectively, and rated phantom utility as "very good" and "perfect" in 61% and 32% of the cases, respectively. Model...Continue Reading

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Citations

May 5, 2020·Journal of Biomedical Materials Research. Part a·Hongjian LiXiao Zhu
Nov 2, 2019·Applied Optics·Christopher Mela, Yang Liu
Feb 7, 2020·3D Printing in Medicine·Vahid AnwariNarinder Paul
Jan 21, 2021·International Journal of Molecular Sciences·Georgia PennarossaTiziana A L Brevini
Mar 25, 2021·3D Printing in Medicine·Grace M Thiong'oJames M Drake
Sep 9, 2021·Biomedical Physics & Engineering Express·Luciana C CabrelliTheo Z Pavan

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