New Directions in 3D Medical Modeling: 3D-Printing Anatomy and Functions in Neurosurgical Planning

Gargiulo, Paolo; Árnadóttir, Íris; Gislason, Magnus K.; Edmunds, Kyle J.; Ólafsson, Ingvar Hákon

doi:10.1155/2017/1439643

Cited by 37 publications

(40 citation statements)

References 26 publications

(31 reference statements)

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“…Users can act on these models like they are working on patients. Simulating models are used by clinicians before preforming important surgical interventions, such as tumor excisions [18] and pediatric mastoidectomy [19]. The right mechanical properties, such as the elastic modulus, the stiffness or the drilling force, are fundamental parameters that allow the operator to experience haptic feedback similar to that encountered during actual surgery.…”

Section: Introductionmentioning

confidence: 99%

3D printed bone models in oral and cranio-maxillofacial surgery: a systematic review

et al. 2020

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Aim This systematic review aimed to evaluate the use of three-dimensional (3D) printed bone models for training, simulating and/or planning interventions in oral and cranio-maxillofacial surgery. Materials and methods A systematic search was conducted using PubMed® and SCOPUS® databases, up to March 10, 2019, by following the Preferred Reporting Items for Systematic reviews and Meta-Analysis (PRISMA) protocol. Study selection, quality assessment (modified Critical Appraisal Skills Program tool) and data extraction were performed by two independent reviewers. All original full papers written in English/French/Italian and dealing with the fabrication of 3D printed models of head bone structures, designed from 3D radiological data were included. Multiple parameters and data were investigated, such as author’s purpose, data acquisition systems, printing technologies and materials, accuracy, haptic feedback, variations in treatment time, differences in clinical outcomes, costs, production time and cost-effectiveness. Results Among the 1157 retrieved abstracts, only 69 met the inclusion criteria. 3D printed bone models were mainly used as training or simulation models for tumor removal, or bone reconstruction. Material jetting printers showed best performance but the highest cost. Stereolithographic, laser sintering and binder jetting printers allowed to create accurate models with adequate haptic feedback. The cheap fused deposition modeling printers exhibited satisfactory results for creating training models. Conclusion Patient-specific 3D printed models are known to be useful surgical and educational tools. Faced with the large diversity of software, printing technologies and materials, the clinical team should invest in a 3D printer specifically adapted to the final application.

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Section: Introductionmentioning

confidence: 99%

3D printed bone models in oral and cranio-maxillofacial surgery: a systematic review

et al. 2020

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“…a number of triangles, and enabling an extended range of operations on given model, e.g. smoothing and stitching surfaces or reducing triangles with a preservation of quality [24][25][26][27][28]. Processed models were ready for importing to STEP file format to Dassault Systemes Solidworks CAD software.…”

Section: Methodology Of the Studymentioning

confidence: 99%

The influence of the nucleus pulposus on the stress distribution in the natural and prosthetic intervertebral disc

Karpiński

Jaworski²,

Jonak

et al. 2019

MATEC Web Conf.

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The aim of this article was to present the results of a preliminary study on the stress distribution in the lumbar intervertebral disc [IVD] under loads induced during daily activities. Basic anatomy, biomechanical analysis of the vertebra and intervertebral disc were introduced. The third and fourth lumbar vertebrae were chosen for the study because they carry considerably higher loads, especially while standing or sitting. The static mechanical analyses using the finite element method (FEM) were conducted for four standard loads reflecting patient’s positions: recumbent, standing, sitting and standing with additional loads, and three models: an intervertebral disc with an inner nucleus pulposus and two prosthetic intervertebral discs, with or without an artificial nucleus. The FEM analysis was performed in the SolidWorks Simulation module on reverse-engineered 3D models of vertebrae and the intervertebral disc, based on a series of computed tomography [CT] scans of the patient’s spine, which had been properly processed in Materialise Mimics software and exported to CAD files. The model of the fourth intervertebral disc, placed between third and fourth vertebra, had been additionally modified to include its inner core, the nucleus pulposus.

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“…Keywords: 3D printing, 3D printing materials, Additive manufacturing, Annealing, Autoclave, Medical devices, Optimization, Sterilization, Surgical instruments, Polylactic acid Background 3D printing is currently used in the medical field for a wide variety of purposes, including printing patient-personalized anatomical models to guide surgeons preoperatively, creating in-house anatomical models for medical student and resident training, and printing surgical instruments, prostheses, and implants [1][2][3][4][5][6][7]. 3D printed models have already been adopted to plan surgeries in fields including, but not limited to, cardiothoracic, craniomaxillofacial, hepatic, neonatal, neurological, ophthalmologic, orthopaedic, and plastic surgery [8][9][10][11][12][13][14][15][16][17][18][19]. Therefore, the accuracy of 3D printed models becomes exceedingly important.…”

Section: (Continued From Previous Page)mentioning

confidence: 99%

Identifying a commercially-available 3D printing process that minimizes model distortion after annealing and autoclaving and the effect of steam sterilization on mechanical strength

et al. 2020

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Background: Fused deposition modeling 3D printing is used in medicine for diverse purposes such as creating patient-specific anatomical models and surgical instruments. For use in the sterile surgical field, it is necessary to understand the mechanical behavior of these prints across 3D printing materials and after autoclaving. It has been previously understood that steam sterilization weakens polylactic acid, however, annealing heat treatment of polylactic acid increases its crystallinity and mechanical strength. We aim to identify an optimal and commercially available 3D printing process that minimizes distortion after annealing and autoclaving and to quantify mechanical strength after these interventions. Methods: Thirty millimeters cubes with four different infill geometries were 3D printed and subjected to hot waterbath annealing then immediate autoclaving. Seven commercially available 3D printing materials were tested to understand their mechanical behavior after intervention. The dimensions in the X, Y, and Z axes were measured before and after annealing, and again after subsequent autoclaving. Standard and strength-optimized Army-Navy retractor designs were printed using the 3D printing material and infill geometry that deformed the least. These retractors were subjected to annealing and autoclaving interventions and tested for differences in mechanical strength.

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New Directions in 3D Medical Modeling: 3D-Printing Anatomy and Functions in Neurosurgical Planning

Cited by 37 publications

References 26 publications

3D printed bone models in oral and cranio-maxillofacial surgery: a systematic review

3D printed bone models in oral and cranio-maxillofacial surgery: a systematic review

The influence of the nucleus pulposus on the stress distribution in the natural and prosthetic intervertebral disc

Identifying a commercially-available 3D printing process that minimizes model distortion after annealing and autoclaving and the effect of steam sterilization on mechanical strength

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