scholarly journals A modern mold room: Meshing 3D surface scanning, digital design, and 3D printing with bolus fabrication

2019 ◽  
Vol 20 (9) ◽  
pp. 78-85 ◽  
Author(s):  
David Kiyoshi Sasaki ◽  
Philip McGeachy ◽  
Jorge E. Alpuche Aviles ◽  
Boyd McCurdy ◽  
Rashmi Koul ◽  
...  
Keyword(s):  
3D Printing ◽  
Digital Design ◽  
Surface Scanning ◽  
3D Surface

scholarly journals Healed Fracture of Superior Horn of Thyroid Cartilage in Autoerotic Asphyxia: An Indication of Prior Activity? A Case Report Utilizing 3D Scanning and Printing of the Larynx

2018 ◽  
Vol 8 (1) ◽  
pp. 170-179 ◽  
Author(s):  
Michael Eckhardt ◽  
Kabeer Shah ◽  
Melanie Bois ◽  
Joseph Maleszewski ◽  
Kellyanna Moore ◽  
...  
Keyword(s):  
Case Report ◽  
3D Printing ◽  
Thyroid Cartilage ◽  
Three Dimensional ◽  
Surface Scanning ◽  
Escape Mechanism ◽  
3D Surface ◽  
Anatomical Specimen ◽  
History Of ◽  
The Right

Evidence of prior autoerotic asphyxia is often difficult to establish due to the decedent's efforts to hide the activity from others. In this case report, we suggest that a healed fracture of the thyroid cartilage is indicative of prior autoerotic asphyxia activity. The decedent was a 45-year-old man who was found unclothed on the floor of his bedroom with a belt ligature around the neck. A second rope ligature was loosely wrapped around the decedent's wrists, scrotum, and penis. A definitive escape mechanism was not identified, but a nearby towel and barbell weight may have comprised a possible escape mechanism. There was no known history of depression or prior autoerotic activity. Autopsy was notable for the presence of a healed fracture of the right superior horn of the thyroid cartilage. Three-dimensional (3D) surface scanning and 3D printing was utilized to preserve the anatomical findings prior to histologic sampling. To our knowledge, this is the first reported use of 3D surface scanning and 3D printing for the purpose of documenting a forensic finding prior to alteration of the anatomical specimen for histologic sampling. Acute fractures of the superior horns of the thyroid cartilage are not infrequently seen in ligature hanging. Therefore, the presence of a healed fracture in the setting of autoerotic asphyxia likely indicates prior activity. Histologic sampling of the laryngeal cartilages to detect occult healed fractures in autoerotic asphyxia may be useful. Three-dimensional scanning and printing may alleviate concerns for specimen alteration due to histology sampling.

scholarly journals TOWARDS ANALYSIS OF FOOT MOTION USING DYNAMIC 3D SURFACE SCANNING

2012 ◽  
Vol 45 ◽  
pp. S197 ◽  
Author(s):  
Inge Van den Herrewegen ◽  
Kris Cuppens ◽  
Mario Broeckx ◽  
Helga Vertommen ◽  
Marc Mertens ◽  
...  
Keyword(s):  
Surface Scanning ◽  
3D Surface ◽  
Foot Motion

3D Printable Resources for Engaging STEM Students in Laboratory Learning Activities and Outreach Programs: Inexpensive and User-Friendly Instrument Kits for Educators

MRS Advances ◽  
2018 ◽  
Vol 3 (49) ◽  
pp. 2937-2942 ◽  
Author(s):  
Lon A. Porter
Keyword(s):  
3D Printing ◽  
Mathematics Learning ◽  
Digital Design ◽  
Outreach Programs ◽  
Stem Students ◽  
3D Printed ◽  
Design Software ◽  
And Performance ◽  
And Mathematics ◽  
User Friendly

ABSTRACTContinued advances in digital design software and 3D printing methods enable innovative approaches in the development of new educational tools for laboratory-based STEM (science, technology, engineering and mathematics) learning. The decreasing cost of 3D printing equipment and greater access provided by university fabrication centers afford unique opportunities for educators to transcend the limitations of conventional modes of student engagement with analytical instrumentation. This work shares successful efforts at Wabash College to integrate user-friendly and inexpensive 3D printed instruments kits into introductory STEM coursework. The laboratory kits and activities described provide new tools for engaging students in the exploration of instrument design and performance. These experiences provide effective ways to assist active-learners in discovering the technology and fundamental principles of analysis and deliberately confront the “black box” perception of instrumentation.

scholarly journals Freeform 3D Printing: A Sustainable, Efficient Construction Alternative

2021 ◽  
Author(s):  
◽  
Armano Papageorge
Keyword(s):  
3D Printing ◽  
Digital Technology ◽  
Digital Design ◽  
Robotic Arm ◽  
Structural Optimisation ◽  
Simulation Tools ◽  
The World ◽  
Efficient Construction ◽  
Efficient Alternative ◽  
Computational Workflow

<p>Since the beginning of the 20th century, modernism introduced to the world an architectural composite that consists of concrete, steel and glass. Heading into the 21st century, the use of these three materials has only expanded as it continues to be the most economically efficient means of construction. While digital technology in design and construction continues to evolve, the materials at which we construct architecture has remained the same. Given the rapid growth of the human population, new and more sustainable approaches to construction methodologies and materials need to be explored and utilised. This research will demonstrate the potential of freeform 3D printing as a sustainable and efficient alternative building method. It outlines contemporary digital design techniques including computation and simulation tools as a means to define and test this proposed building method including structural optimisation tools to create the most structurally efficient form from additive manufacturing. The computational methods described are then applied to a manufacturing process that includes a 6-axis robotic arm. The final result is a building methodology that supports a computational workflow from design conception to manufacture.</p>

Performing Distance Measurements in Curved Facial Regions: A Comparison between Three-Dimensional Surface Scanning and Ultrasound Imaging

2021 ◽  
Author(s):  
Michael Alfertshofer ◽  
Konstantin Frank ◽  
Dmitry V. Melnikov ◽  
Nicholas Möllhoff ◽  
Robert H. Gotkin ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Dimensional Accuracy ◽  
Ultrasound Measurement ◽  
Surface Scanning ◽  
Distance Measurements ◽  
Surgical Performance ◽  
Facial Region ◽  
3D Surface ◽  
The Face ◽  
The Mean

AbstractFacial flap surgery depends strongly on thorough preoperative planning and precise surgical performance. To increase the dimensional accuracy of transferred facial flaps, the methods of ultrasound and three-dimensional (3D) surface scanning offer great possibilities. This study aimed to compare different methods of measuring distances in the facial region and where they can be used reliably. The study population consisted of 20 volunteers (10 males and 10 females) with a mean age of 26.7 ± 7.2 years and a mean body mass index of 22.6 ± 2.2 kg/m2. Adhesives with a standardized length of 20 mm were measured in various facial regions through ultrasound and 3D surface scans, and the results were compared. Regardless of the facial region, the mean length measured through ultrasound was 18.83 mm, whereas it was 19.89 mm for 3D surface scans, with both p < 0.0001. Thus, the mean difference was 1.17 mm for ultrasound measurements and 0.11 mm for 3D surface scans. Curved facial regions show a great complexity when it comes to measuring distances due to the concavity and convexity of the face. Distance measurements through 3D surface scanning showed more accurate distances than the ultrasound measurement. Especially in “complex” facial regions (e.g., glabella region and labiomental sulcus), the 3D surface scanning showed clear advantages.

Digital Design and 3D Printing of Aortic Arch Reconstruction in HLHS for Surgical Simulation and Training

2018 ◽  
Vol 9 (4) ◽  
pp. 454-458 ◽  
Author(s):  
Sarah A. Chen ◽  
Chin Siang Ong ◽  
Nagina Malguria ◽  
Luca A. Vricella ◽  
Juan R. Garcia ◽  
...  
Keyword(s):  
3D Printing ◽  
Aortic Arch ◽  
Surgical Simulation ◽  
Three Dimensional ◽  
3D Models ◽  
Digital Design ◽  
Patient Specific ◽  
Aortic Arch Reconstruction ◽  
Arch Reconstruction ◽  
And Training

Purpose: Patients with hypoplastic left heart syndrome (HLHS) present a diverse spectrum of aortic arch morphology. Suboptimal geometry of the reconstructed aortic arch may result from inappropriate size and shape of an implanted patch and may be associated with poor outcomes. Meanwhile, advances in diagnostic imaging, computer-aided design, and three-dimensional (3D) printing technology have enabled the creation of 3D models. The purpose of this study is to create a surgical simulation and training model for aortic arch reconstruction. Description: Specialized segmentation software was used to isolate aortic arch anatomy from HLHS computed tomography scan images to create digital 3D models. Three-dimensional modeling software was used to modify the exported segmented models and digitally design printable customized patches that were optimally sized for arch reconstruction. Evaluation: Life-sized models of HLHS aortic arch anatomy and a digitally derived customized patch were 3D printed to allow simulation of surgical suturing and reconstruction. The patient-specific customized patch was successfully used for surgical simulation. Conclusions: Feasibility of digital design and 3D printing of patient-specific patches for aortic arch reconstruction has been demonstrated. The technology facilitates surgical simulation. Surgical training that leads to an understanding of optimal aortic patch geometry is one element that may potentially influence outcomes for patients with HLHS.

3D printing will affect global commodity markets

2016 ◽  
Keyword(s):  
3D Printing ◽  
Smart Materials ◽  
Industrial Revolution ◽  
Commodity Markets ◽  
Digital Design ◽  
Printable Electronics ◽  
Content Type ◽  
Marginal Costs ◽  
Supply And Distribution ◽  
Global Commodity Markets

Subject 3D printing and its ramifications for commodities. Significance General Electric (GE) calls 3D printing "the next industrial revolution". The technique promises to disrupt the manufacturing process, including supply and distribution chains, and to eliminate waste while producing superior and otherwise unmakeable components and reducing marginal costs. 3D printing currently consumes negligible amounts of commodities, but, as adoption expands, it may start affecting commodity supply chains. Impacts Wide adoption of 3D printing will reduce manufacturing waste and idle inventory. 3D printing will enable the development and use of smart materials. Printable electronics could change the usage and functionality of some materials. The potentially limitless customisation of mass-market products will spawn new digital design-to-distribution production platforms.

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