Restitution and replication: the role of 3D technology replicas in cultural restitution practices

Digital repatriation is one aspect of heritage preservation work that has been increasingly gaining popularity due to its effectiveness in assisting Indigenous communities in connecting with museum collections located at various institutions around the world. It is not simply an alternative for physical repatriation; rather, the two can be used in conjunction, particularly with the incorporation of 3D technology. While digital repatriation can provide new opportunities, it is also a contested concept (Boast and Enote 2013) that is still in the process of shaping future collaborative practices while being shaped by ongoing projects and their outcomes. In this paper, we explore how this technology, structure from motion (SFM) 3D modeling and scanning, provides innovative methods that are especially well suited for successfully contributing to a wide array of heritage preservation objectives. Three-dimensional technology is effective in providing alternative ways to connect with collection pieces and providing origin communities access to museum collections. It can alleviate concerns of chemical exposure from contamination, concerns for the fragility of items, the expense of insurance and transportation, or the need to remove pieces from origin communities. As artifacts transform in the repatriation process by gaining new life and meaning when they enter the contemporary reality of the origin community, the use of 3D technology, as part of this collaboration, can assist Indigenous communities in fulfilling their own visions of heritage preservation.

Double-outlet right ventricle falls under the category of congenital heart disease known as conotruncal defects, which possess abnormal ventriculoarterial relationships.1 For complex cases, the surgeon must determine whether the left ventricle and one of the great arteries can be aligned using the ventricular septal defect to construct an unobstructed pathway or baffle, resulting in a 2-ventricle repair.2 Creation of the baffle can be complicated by anatomic obstructions because of prominent conal septum, straddling atrioventricular valve attachments, or location of the ventricular septal defect in the inlet septum, remote from any great artery. Three-dimensional (3D) printing has been applied in the management of many different congenital heart diseases.3 In this specific patient population, in whom communicating the complex intracardiac anatomy to the surgeon is so critical, the use of 3D modeling and printing is invaluable. We used this approach in a patient with dextrocardia, complex double-outlet right ventricle (S,L,A)1 and supratricuspid ring. She underwent pulmonary artery banding in infancy and had been doing relatively well clinically; so that any further surgical intervention was deferred until she was 8 years old. Although she was growing well and required no medication, …

The use of 3D technology in chemistry education, 3D printing, 3D printing objects for three-dimensional graphics, three-dimensional modeling and chemistry education, the widespread use of 3D printing in chemistry education there are many examples of how whole molecules or crystal structures can be shown in 3D printing, and this allows students to show the true structure of the molecules and compounds being studied. The approach to the use of 3D printing in chemistry, 3D printing, easy to use and convenient for teachers, the use of many common tools in chemistry education, namely to create molecular building kits, in the creation of virtual reality the formation of information technology without computer graphics, real-time mode and programming technologies, and the use of computer graphics from OpenGL, Direct3D, Java3D, and VRML libraries, and programming from C ++, Perl, Java, and Python.

3D printing as surgical planning and training in pediatric endoscopic skull base surgery - Systematic review and practical example.

To download this paper, please click here. This short report details a sub-project of ‘Stories through Skeletons’ an interdisciplinary venture undertaken by the Osteoarchaeology and Bioengineering departments at the University of Southampton. As part of this project, the team has been exploring the potential of using 3D printing technology to improve accessibility of palaeopathological data to a wider audience, through the production of tactile aids. To test this idea, models were created of Langer type mesomelic dwarfism exhibited in a skeleton from the Romano-British cemetery site of Alington Avenue, Dorset, UK. The 3D models were used as props during osteoarchaeology conference presentations and have proved useful to visually impaired and non-disabled audiences alike. Methods used to create the 3D models and the feedback received from the preliminary showing of the models at conferences are outlined, including the development of the idea of the 3D models as ‘diagrams’. This highlights the creation of accessibility tools as another potential use of 3D technology in the field of osteoarchaeology and in so doing, adds the issue of accessibility to the ethical debates surrounding the use of 3D modelling technology in physical anthropology more broadly.

The development of 3D technologies, the wide spread and improvement of 3D printers, elaboration and use of new materials and their combinations have contributed to general availability of 3D printers in medicine. The use of 3D technology in surgery is possible in the following areas. First of all, there are a lot of various implants, which are widely used in dentistry, traumatology and reconstructive surgery. Secondly, 3D models are suitable for simulating surgical operation in complex cases. Thirdly, scanning and printing of organs and tissues with living cells, the so-called bioprinting, is progressively used. Fourthly, there is an experience of using 3D printers for creating medical instruments. Finally, 3D printers have been properly investigated to create various endoprostheses. Thereby, the perspective of 3D technologies is huge. They will necessarily be one of the dynamic areas in medicine, particulary in surgery in the nearest future.

Introduction: In recent years, the use of 3D printing in medicine has grown exponentially, but the use of 3D technology has not been equally adopted by the different medical specialties. Published 3D printing activity in general thoracic surgery is scarce and has been mostly limited to case reports. The aim of this report was to reflect on the results and lessons learned from a newly created multidisciplinary and multicenter 3D unit of the Spanish Society of Thoracic Surgery (SECT).Methods: This is a pilot study to determine the feasibility and usefulness of printing 3D models for patients with thoracic malignancy or airway complications, based on real data. We designed a point-of-care 3D printing workflow involving thoracic surgeons, radiologists with experience in intrathoracic pathology, and engineers with experience in additive manufacturing.Results: In the first year of operation we generated 26 three-dimensional models out of 27 cases received (96.3%). In 9 cases a virtual model was sufficient for optimal patient handling, while in 17 cases a 3D model was printed. Per pathology, cases were classified as airway stenosis after lung transplantation (7 cases, 25.9%), tracheal pathology (7 cases, 25.9%), chest tumors (6 cases, 22.2%) carcinoid tumors (4 cases, 14.8%), mediastinal tumors (2 cases, 7.4%) and Pancoast tumors (one case, 3.7%).Conclusion: A multidisciplinary 3D laboratory is feasible in a hospital setting, and working as a multicenter group increases the number of cases and diversity of pathologies thus providing further opportunity to study the benefits of the 3D printing technology in general thoracic surgery.

Split-Rib Cranioplasty Using a Patient-Specific Three-Dimensional Printing Model

Objective To evaluate the feasibility of three-dimensional (3D) printing of mitral annulus with transesophageal echocardiographic volume images as the data source, and to assess the accuracy of the 3D printing mitral annulus models based on three dimensional transesophageal echocardiography (3D-TEE) images preliminarily. Methods A retrospective study was performed in 25 patients with mild or slight mitral regurgitation and 10 patients with moderate to severe mitral regurgitation. All the subjects were underwent 3D-TEE. The 3D-TEE volume images of mitral annulus at the end diastole were post-processed by Mimics software to create images of the mitral annulus in standard tessellation language format. The STL file was output to the 3D printer and the 3D printing models of mitral annulus were obtained. The mitral annulus size parameters including the diameter between anterior and posterior, the diameter between anterolaterior and posteromedial, sphericity index and mitral annulus circumference were measured from 3D printing models and 3D-TEE images, respectively. From which the absolute difference of the measurements between 3D printing models and the 3D-TEE images were calculated. Results All of the 3D-TEE images were successfully post-processed, and the corresponding 3D printing models were acquired by high-precision 3D printer. It showed no significant difference in all the mitral annulus size parameters between 3D printing models and 3D-TEE images (all P>0.05). Morever, the size parameters were concordant well between the two methods, all of the data points fell within the limits of agreement. It showed little absolute difference in value of the mitral annulus size parameters between the 3D printing mitral annulus models and the 3D-TEE images. Conclusions It is technically feasible to print 3D models of mitral annulus using 3D-TEE images as the data source. 3D printing mitral annulus models based on transesophageal echocardiographic volume images have high precision. Key words: Echocardiography, transesophageal; 3D printing technology; Mitral annulus; Feasibility; Accuracy

In this paper are discussed the application of 3D technologies, which are reflected in various areas of life, such as education, science, engineering and entertainment industry. The use of 3D technology in the educational process can significantly increase its efficiency by bringing the virtual computer environment closer to the real three-dimensional world. But for now the use of augmented reality in teaching is only gaining momentum. Many applications are still quite primitive, but developers are actively working on their refinement, increasing the amount of educational content, improving quality. The task of fast and high-quality algorithm for creating 3D content for further import in AR training projects has been urgent. The aim of this work is to increase the level of use of 3D technologies in the educational process for an effective and external interactive way of providing information. In the course of the work the methods of creating 3D content for different areas of application such as game industry, 3D visualization, 3D printing, AR projects, holographic fans, preliminary assessment of technical properties of the product and etc were considered. Data analysis has been shown that for each area of ​​application 3d content has its own requirements and features. This information was identified and presented in the form of a comparative table. Based on the analysis of modern methods of developing 3D content for various applications, a general method of creating 3D objects for further import into AR projects was proposed. Based on the proposed approach, a 3D model of the character for the children audio-encyclopedic stories educational application was designed. The obtained models were also integrated in the augmented reality environment. The use of this approach has increased the download speed of the model in an augmented reality application.

5D printing and its expected applications in Orthopaedics

This session is designed so that the learning objectives are practical. The intent is that the attendee may take home an understanding of not just the technology, but also the logistical steps necessary to execute these 3D printing techniques in the clinic. Four practical 3D printing topics will be discussed: (i) Creating bolus and compensators for photon machines; (ii) tools for proton therapy; (iii) clinical applications in imaging; (iv) custom phantom design for clinic and research use. The use of 3D printers within the radiation oncology setting is proving to be a useful tool for creating patient specific bolus and compensators with the added benefit of cost savings. Creating the proper protocol is essential to ensuring that the desired effect is achieved and modeled in the treatment planning system. The critical choice of printer material (since it determines the interaction with the radiation) will be discussed. Selection of 3D printer type, design methods, verification of dose calculation, and the printing process will be detailed to give the basis for establishing your own protocol for electron and photon fields. A practical discussion of likely obstacles that may be encountered will be included. The diversity of systems and techniques in proton facilities leads to different facilities having very different requirements for beam modifying hardware and quality assurance devices. Many departments find the need to design and fabricate facility‐specific equipment, making 3D printing an attractive technology. 3D printer applications in proton therapy will be discussed, including beam filters and compensators, and the design of proton therapy specific quality assurance tools. Quality control specific to 3D printing in proton therapy will be addressed. Advantages and disadvantages of different printing technology for these applications will also be discussed. 3D printing applications using high‐resolution radiology‐based imaging data will be presented. This data is used to 3D print individualized physical models of patient's unique anatomy for aid in planning complex and challenging surgical procedures. Methods, techniques and imaging requirements for 3D printing anatomic models from imaging data will be discussed. Specific applications currently being used in the radiology clinic will be detailed. Standardized phantoms for radiation therapy are abundant. However, custom phantom designs can be advantageous for both clinical tasks and research. 3D printing is a useful method of custom fabrication that allows one to construct custom objects relatively quickly. Possibilities for custom radiotherapy phantoms range from 3D printing a hollow shell and filling the shell with tissue equivalent materials to fully printing the entire phantom with materials that are tissue equivalent as well as suitable for 3D printing. A range of materials available for use in radiotherapy phantoms and in the case of phantoms for dosimetric measurements, this choice is critical. The necessary steps required will be discussed including: modalities of 3D model generation, 3D model requirements for 3D printing, generation of machine instructions from the 3D model, and 3D printing techniques, choice of phantoms material, and troubleshooting techniques for each step in the process. Case examples of 3D printed phantoms will be shown. Learning Objectives: Understand the types of 3D modeling software required to design your device, the file formats required for data transfer from design software to 3D printer, and general troubleshooting techniques for each step of the process. Learn the differences between materials and design for photons vs. electrons vs. protons. Understand the importance of material choice and design geometries for your custom phantoms. Learn specific steps of quality assurance and quality control for 3D printed beam filters and compensators for proton therapy. Learn of special 3D printing applications for imaging. Cunha: Research support from Phillips Healthcare.

This session is designed so that the learning objectives are practical. The intent is that the attendee may take home an understanding of not just the technology, but also the logistical steps necessary to execute these 3D printing techniques in the clinic. Four practical 3D printing topics will be discussed: (i) Creating bolus and compensators for photon machines; (ii) tools for proton therapy; (iii) clinical applications in imaging; (iv) custom phantom design for clinic and research use. The use of 3D printers within the radiation oncology setting is proving to be a useful tool for creating patient specific bolus and compensators with the added benefit of cost savings. Creating the proper protocol is essential to ensuring that the desired effect is achieved and modeled in the treatment planning system. The critical choice of printer material (since it determines the interaction with the radiation) will be discussed. Selection of 3D printer type, design methods, verification of dose calculation, and the printing process will be detailed to give the basis for establishing your own protocol for electron and photon fields. A practical discussion of likely obstacles that may be encountered will be included. The diversity of systems and techniques in proton facilities leads to different facilities having very different requirements for beam modifying hardware and quality assurance devices. Many departments find the need to design and fabricate facility‐specific equipment, making 3D printing an attractive technology. 3D printer applications in proton therapy will be discussed, including beam filters and compensators, and the design of proton therapy specific quality assurance tools. Quality control specific to 3D printing in proton therapy will be addressed. Advantages and disadvantages of different printing technology for these applications will also be discussed. 3D printing applications using high‐resolution radiology‐based imaging data will be presented. This data is used to 3D print individualized physical models of patient's unique anatomy for aid in planning complex and challenging surgical procedures. Methods, techniques and imaging requirements for 3D printing anatomic models from imaging data will be discussed. Specific applications currently being used in the radiology clinic will be detailed. Standardized phantoms for radiation therapy are abundant. However, custom phantom designs can be advantageous for both clinical tasks and research. 3D printing is a useful method of custom fabrication that allows one to construct custom objects relatively quickly. Possibilities for custom radiotherapy phantoms range from 3D printing a hollow shell and filling the shell with tissue equivalent materials to fully printing the entire phantom with materials that are tissue equivalent as well as suitable for 3D printing. A range of materials available for use in radiotherapy phantoms and in the case of phantoms for dosimetric measurements, this choice is critical. The necessary steps required will be discussed including: modalities of 3D model generation, 3D model requirements for 3D printing, generation of machine instructions from the 3D model, and 3D printing techniques, choice of phantoms material, and troubleshooting techniques for each step in the process. Case examples of 3D printed phantoms will be shown. Learning Objectives: Understand the types of 3D modeling software required to design your device, the file formats required for data transfer from design software to 3D printer, and general troubleshooting techniques for each step of the process. Learn the differences between materials and design for photons vs. electrons vs. protons. Understand the importance of material choice and design geometries for your custom phantoms. Learn specific steps of quality assurance and quality control for 3D printed beam filters and compensators for proton therapy. Learn of special 3D printing applications for imaging. Cunha: Research support from Phillips Healthcare.

This session is designed so that the learning objectives are practical. The intent is that the attendee may take home an understanding of not just the technology, but also the logistical steps necessary to execute these 3D printing techniques in the clinic. Four practical 3D printing topics will be discussed: (i) Creating bolus and compensators for photon machines; (ii) tools for proton therapy; (iii) clinical applications in imaging; (iv) custom phantom design for clinic and research use. The use of 3D printers within the radiation oncology setting is proving to be a useful tool for creating patient specific bolus and compensators with the added benefit of cost savings. Creating the proper protocol is essential to ensuring that the desired effect is achieved and modeled in the treatment planning system. The critical choice of printer material (since it determines the interaction with the radiation) will be discussed. Selection of 3D printer type, design methods, verification of dose calculation, and the printing process will be detailed to give the basis for establishing your own protocol for electron and photon fields. A practical discussion of likely obstacles that may be encountered will be included. The diversity of systems and techniques in proton facilities leads to different facilities having very different requirements for beam modifying hardware and quality assurance devices. Many departments find the need to design and fabricate facility‐specific equipment, making 3D printing an attractive technology. 3D printer applications in proton therapy will be discussed, including beam filters and compensators, and the design of proton therapy specific quality assurance tools. Quality control specific to 3D printing in proton therapy will be addressed. Advantages and disadvantages of different printing technology for these applications will also be discussed. 3D printing applications using high‐resolution radiology‐based imaging data will be presented. This data is used to 3D print individualized physical models of patient's unique anatomy for aid in planning complex and challenging surgical procedures. Methods, techniques and imaging requirements for 3D printing anatomic models from imaging data will be discussed. Specific applications currently being used in the radiology clinic will be detailed. Standardized phantoms for radiation therapy are abundant. However, custom phantom designs can be advantageous for both clinical tasks and research. 3D printing is a useful method of custom fabrication that allows one to construct custom objects relatively quickly. Possibilities for custom radiotherapy phantoms range from 3D printing a hollow shell and filling the shell with tissue equivalent materials to fully printing the entire phantom with materials that are tissue equivalent as well as suitable for 3D printing. A range of materials available for use in radiotherapy phantoms and in the case of phantoms for dosimetric measurements, this choice is critical. The necessary steps required will be discussed including: modalities of 3D model generation, 3D model requirements for 3D printing, generation of machine instructions from the 3D model, and 3D printing techniques, choice of phantoms material, and troubleshooting techniques for each step in the process. Case examples of 3D printed phantoms will be shown. Learning Objectives: Understand the types of 3D modeling software required to design your device, the file formats required for data transfer from design software to 3D printer, and general troubleshooting techniques for each step of the process. Learn the differences between materials and design for photons vs. electrons vs. protons. Understand the importance of material choice and design geometries for your custom phantoms. Learn specific steps of quality assurance and quality control for 3D printed beam filters and compensators for proton therapy. Learn of special 3D printing applications for imaging. Cunha: Research support from Phillips Healthcare.

This session is designed so that the learning objectives are practical. The intent is that the attendee may take home an understanding of not just the technology, but also the logistical steps necessary to execute these 3D printing techniques in the clinic. Four practical 3D printing topics will be discussed: (i) Creating bolus and compensators for photon machines; (ii) tools for proton therapy; (iii) clinical applications in imaging; (iv) custom phantom design for clinic and research use. The use of 3D printers within the radiation oncology setting is proving to be a useful tool for creating patient specific bolus and compensators with the added benefit of cost savings. Creating the proper protocol is essential to ensuring that the desired effect is achieved and modeled in the treatment planning system. The critical choice of printer material (since it determines the interaction with the radiation) will be discussed. Selection of 3D printer type, design methods, verification of dose calculation, and the printing process will be detailed to give the basis for establishing your own protocol for electron and photon fields. A practical discussion of likely obstacles that may be encountered will be included. The diversity of systems and techniques in proton facilities leads to different facilities having very different requirements for beam modifying hardware and quality assurance devices. Many departments find the need to design and fabricate facility‐specific equipment, making 3D printing an attractive technology. 3D printer applications in proton therapy will be discussed, including beam filters and compensators, and the design of proton therapy specific quality assurance tools. Quality control specific to 3D printing in proton therapy will be addressed. Advantages and disadvantages of different printing technology for these applications will also be discussed. 3D printing applications using high‐resolution radiology‐based imaging data will be presented. This data is used to 3D print individualized physical models of patient's unique anatomy for aid in planning complex and challenging surgical procedures. Methods, techniques and imaging requirements for 3D printing anatomic models from imaging data will be discussed. Specific applications currently being used in the radiology clinic will be detailed. Standardized phantoms for radiation therapy are abundant. However, custom phantom designs can be advantageous for both clinical tasks and research. 3D printing is a useful method of custom fabrication that allows one to construct custom objects relatively quickly. Possibilities for custom radiotherapy phantoms range from 3D printing a hollow shell and filling the shell with tissue equivalent materials to fully printing the entire phantom with materials that are tissue equivalent as well as suitable for 3D printing. A range of materials available for use in radiotherapy phantoms and in the case of phantoms for dosimetric measurements, this choice is critical. The necessary steps required will be discussed including: modalities of 3D model generation, 3D model requirements for 3D printing, generation of machine instructions from the 3D model, and 3D printing techniques, choice of phantoms material, and troubleshooting techniques for each step in the process. Case examples of 3D printed phantoms will be shown. Learning Objectives: Understand the types of 3D modeling software required to design your device, the file formats required for data transfer from design software to 3D printer, and general troubleshooting techniques for each step of the process. Learn the differences between materials and design for photons vs. electrons vs. protons. Understand the importance of material choice and design geometries for your custom phantoms. Learn specific steps of quality assurance and quality control for 3D printed beam filters and compensators for proton therapy. Learn of special 3D printing applications for imaging. Cunha: Research support from Phillips Healthcare.