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https://www.readbyqxmd.com/read/28922705/from-ancient-to-avant-garde-a-review-of-traditional-and-modern-multimodal-approaches-to-surgical-anatomy-education
#1
REVIEW
Minhao Hu, David Wattchow, Dayan de Fontgalland
The landscape of surgical anatomy education is progressively changing. Traditional methods, such as cadaveric dissection and didacticism are being increasingly phased out in undergraduate courses for multimodal approaches incorporating problem-based learning, radiology and computer-based simulations. Although effective at clinically contextualizing and integrating anatomical information, these approaches may be a poor substitute for fostering a grasp of foundational 'pure' anatomy. Dissection is ideal for this purpose and hence remains the cornerstone of anatomical education...
September 18, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28920439/multi-material-3d-printing-of-graphene-based-electrodes-for-electrochemical-energy-storage-using-thermo-responsive-inks
#2
Victoria García Rocha, Esther Garcia-Tunon, Cristina Botas, Foivos Markoulidis, Ezra Feilden, Eleonora D'Elia, Na Ni, Milo Sebastian Peter Shaffer, Eduardo Saiz
The current lifestyles, increasing population and limited resources result in energy research being at the forefront of worldwide grand challenges, increasing the demand for sustainable and more efficient energy devices. In this context, Additive Manufacturing brings the possibility of making electrodes and electrical energy storage (EES) devices in any desired 3D shape and dimensions, while preserving the multifunctional properties of the active materials in terms of surface area and conductivity. This paves the way to optimized and more efficient designs for energy devices...
September 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28914982/production-of-accurate-skeletal-models-of-domestic-animals-using-three-dimensional-scanning-and-printing-technology
#3
Fangzheng Li, Chunying Liu, Xuexiong Song, Yanjun Huan, Shansong Gao, Zhongling Jiang
Access to adequate anatomical specimens can be an important aspect in learning the anatomy of domestic animals. In this study, the authors utilized a structured light scanner and fused deposition modeling (FDM) printer to produce highly accurate animal skeletal models. First, various components of the bovine skeleton, including the femur, the fifth rib, and the sixth cervical (C6) vertebra were used to produce digital models. These were then used to produce 1:1 scale physical models with the FDM printer. The anatomical features of the digital models and three-dimensional (3D) printed models were then compared with those of the original skeletal specimens...
September 15, 2017: Anatomical Sciences Education
https://www.readbyqxmd.com/read/28912242/fabrication-of-fillable-microparticles-and-other-complex-3d-microstructures
#4
Kevin J McHugh, Thanh D Nguyen, Allison R Linehan, David Yang, Adam M Behrens, Sviatlana Rose, Zachary L Tochka, Stephany Y Tzeng, James J Norman, Aaron C Anselmo, Xian Xu, Stephanie Tomasic, Matthew A Taylor, Jennifer Lu, Rohiverth Guarecuco, Robert Langer, Ana Jaklenec
Three-dimensional (3D) microstructures created by microfabrication and additive manufacturing have demonstrated value across a number of fields, ranging from biomedicine to microelectronics. However, the techniques used to create these devices each have their own characteristic set of advantages and limitations with regards to resolution, material compatibility, and geometrical constraints that determine the types of microstructures that can be formed. We describe a microfabrication method, termed StampEd Assembly of polymer Layers (SEAL), and create injectable pulsatile drug-delivery microparticles, pH sensors, and 3D microfluidic devices that we could not produce using traditional 3D printing...
September 15, 2017: Science
https://www.readbyqxmd.com/read/28906410/augmented-reality-navigation-in-open-surgery-for-hilar-cholangiocarcinoma-resection-with-hemihepatectomy-using-video-based-in-situ-three-dimensional-anatomical-modeling-a-case-report
#5
Rui Tang, Longfei Ma, Canhong Xiang, Xuedong Wang, Ang Li, Hongen Liao, Jiahong Dong
RATIONALE: Patients who undergo hilar cholangiocarcinoma (HCAC) resection with concomitant hepatectomy have a high risk of postoperative morbidity and mortality due to surgical trauma to the hepatic and biliary vasculature. PATIENT CONCERNS: A 58-year-old Chinese man with yellowing skin and sclera, abdominal distension, pruritus, and anorexia for approximately 3 weeks. DIAGNOSES: Magnetic resonance cholangiopancreatography and enhanced computed tomography (CT) scanning revealed a mass over the biliary tree at the porta hepatis, which diagnosed to be s a hilar cholangiocarcinoma...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28905390/validation-of-the-gatortail-method-for-accurate-sizing-of-pulmonary-vessels-from-3d-medical-images
#6
Walter G O'Dell, Anne K Gormaley, David A Prida
PURPOSE: Detailed characterization of changes in vessel size is crucial for the diagnosis and management of a variety of vascular diseases. Because clinical measurement of vessel size is typically dependent on the radiologist's subjective interpretation of the vessel borders, it is often prone to high inter- and intra-user variability. Automatic methods of vessel sizing have been developed for two-dimensional images but a fully three-dimensional (3D) method suitable for vessel sizing from volumetric X-ray computed tomography (CT) or magnetic resonance imaging has heretofore not been demonstrated and validated robustly...
September 14, 2017: Medical Physics
https://www.readbyqxmd.com/read/28901301/expert-consensus-workshop-report-guideline-for-three-dimensional-printing-template-assisted-computed-tomography-guided-125-i-seeds-interstitial-implantation-brachytherapy
#7
REVIEW
Junjie Wang, Fujun Zhang, Jinhe Guo, Shude Chai, Guangjun Zheng, Kaixian Zhang, Anyan Liao, Ping Jiang, Yuliang Jiang, Zhe Ji
Radioactive 125I seeds (RIS) interstitial implantation brachytherapy has been a first-line treatment for early-stage cancer of the prostate gland. However, its poor accuracy and homogeneity has limited its indication and hampered its popularization for a long time. Intriguingly, scholars based in China introduced computed tomography (CT)-guided technology to improve the accuracy and homogeneity of RIS implantation and broadened the indications. Then, they creatively designed and introduced three-dimensional printing coplanar template (3D-PCT) and 3D printing noncoplanar template (3D-PNCT) into the practice of RIS implantation...
2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28901300/expert-consensus-workshop-report-guideline-for-three-dimensional-printing-template-assisted-computed-tomography-guided-125-i-seeds-interstitial-implantation-brachytherapy
#8
EDITORIAL
Shiro Saito, Xin Ye
No abstract text is available yet for this article.
2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28901052/noninvasive-three-dimensional-full-field-body-sensor-for-surface-deformation-monitoring-of-human-body-in-vivo
#9
Zhenning Chen, Xinxing Shao, Xiaoyuan He, Jialin Wu, Xiangyang Xu, Jinlin Zhang
Noninvasive, three-dimensional (3-D), full-field surface deformation measurements of the human body are important for biomedical investigations. We proposed a 3-D noninvasive, full-field body sensor based on stereo digital image correlation (stereo-DIC) for surface deformation monitoring of the human body in vivo. First, by applying an improved water-transfer printing (WTP) technique to transfer optimized speckle patterns onto the skin, the body sensor was conveniently and harmlessly fabricated directly onto the human body...
September 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/28898358/relevance-of-the-implementation-of-teeth-in-three-dimensional-vocal-tract-models
#10
Louisa Traser, Peter Birkholz, Tabea Viktoria Flügge, Robert Kamberger, Michael Burdumy, Bernhard Richter, Jan Gerrit Korvink, Matthias Echternach
Purpose: Recently, efforts have been made to investigate the vocal tract using magnetic resonance imaging (MRI). Due to technical limitations, teeth were omitted in many previous studies on vocal tract acoustics. However, the knowledge of how teeth influence vocal tract acoustics might be important in order to estimate the necessity of implementing teeth in vocal tract models. The aim of this study was therefore to estimate the effect of teeth on vocal tract acoustics. Method: The acoustic properties of 18 solid (3-dimensional printed) vocal tract models without teeth were compared to the same 18 models including teeth in terms of resonance frequencies (fRn)...
September 18, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28891947/review-of-batteryless-wireless-sensors-using-additively-manufactured-microwave-resonators
#11
REVIEW
Muhammad Usman Memon, Sungjoon Lim
The significant improvements observed in the field of bulk-production of printed microchip technologies in the past decade have allowed the fabrication of microchip printing on numerous materials including organic and flexible substrates. Printed sensors and electronics are of significant interest owing to the fast and low-cost fabrication techniques used in their fabrication. The increasing amount of research and deployment of specially printed electronic sensors in a number of applications demonstrates the immense attention paid by researchers to this topic in the pursuit of achieving wider-scale electronics on different dielectric materials...
September 9, 2017: Sensors
https://www.readbyqxmd.com/read/28891924/three-dimensionally-printed-conformers-for-treatment-of-congenital-anophthalmos
#12
Maayke M P Kuijten, Jelmer S Remmers, Daphne L Mourits, Pim de Graaf, Dyonne T Hartong
No abstract text is available yet for this article.
September 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28888410/three-dimensional-printing-in-contemporary-fixed-prosthodontics-a-technique-article
#13
Sarah Bukhari, Brian J Goodacre, Abdulaziz AlHelal, Mathew T Kattadiyil, Paul M Richardson
Digital dentistry has gained in popularity among clinicians and laboratory technicians because of its versatile applications. Three-dimensional (3D) printing has been applied in many areas of dentistry as it offers efficiency, affordability, accessibility, reproducibility, speed, and accuracy. This article describes a technique where 3D printing is used to fabricate a die-trimmed cast and to replicate gingival tissue and implant analogs. The digital workflow that replaces the conventional laboratory procedure is outlined...
September 6, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28887492/freeform-fabrication-of-tissue-simulating-phantom-for-potential-use-of-surgical-planning-in-conjoined-twins-separation-surgery
#14
Shuwei Shen, Haili Wang, Yue Xue, Li Yuan, Ximing Zhou, Zuhua Zhao, Erbao Dong, Bin Liu, Wendong Liu, Barrett Cromeens, Brent Adler, Gail Besner, Ronald X Xu
Preoperative assessment of tissue anatomy and accurate surgical planning is crucial in conjoined twin separation surgery. We developed a new method that combines three-dimensional (3D) printing, assembling, and casting to produce anatomic models of high fidelity for surgical planning. The related anatomic features of the conjoined twins were captured by computed tomography (CT), classified as five organ groups, and reconstructed as five computer models. Among these organ groups, the skeleton was produced by fused deposition modeling (FDM) using acrylonitrile-butadiene-styrene...
September 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28885113/a-3d-printed-surgical-analogue-to-reduce-donor-tooth-trauma-during-autotransplantation
#15
Richard R J Cousley, Andrew Gibbons, Jeremy Nayler
Surgical trauma and prolonged extra-alveolar exposure of the donor tooth's root sheath are both complicating factors during tooth autotransplantation surgery. This case report describes a 12-year-old female patient who underwent surgical transplantation of a maxillary second premolar to a central incisor site. A three-dimensional printed analogue of the donor tooth was fabricated from a cone beam (CBCT) scan of the tooth in order to minimise the extra-oral (exposure) time and frequency of trial insertions of the donor tooth into the recipient socket...
September 8, 2017: Journal of Orthodontics
https://www.readbyqxmd.com/read/28883498/the-mechanical-and-photoelastic-properties-of-3d-printable-stress-visualized-materials
#16
Li Wang, Yang Ju, Heping Xie, Guowei Ma, Lingtao Mao, Kexin He
Three-dimensional (3D) printing technology integrating frozen stress techniques has created a novel way to directly represent and characterize 3D interior discontinuities and the full-field stress induced by mining- or construction-related disturbances of deeply buried rock masses. However, concerns have been raised about the similitude between the mechanical behaviours of the printed model and its prototype rock mass. Ensuring the mechanical properties of the printable materials are as close as possible to those of real rock mass is of critical significance...
September 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28879329/creating-protective-appliances-for-preventing-dental-injury-during-endotracheal-intubation-using-intraoral-scanning-and-3d-printing-a-technical-note
#17
Jin-Hyung Cho, Wonse Park, Kyeong-Mee Park, Seo-Yul Kim, Kee-Deog Kim
Digital dentistry has influenced many dental procedures, such as three-dimensional (3D) diagnosis and treatment planning, surgical splints, and prosthetic treatments. Patient-specific protective appliances (PSPAs) prevent dental injury during endotracheal intubation. However, the required laboratory work takes time, and there is the possibility of tooth extraction while obtaining the dental impression. In this technical report, we utilized new digital technology for creating PSPAs, using direct intraoral scanners and 3D printers for dental cast fabrication...
March 2017: J Dent Anesth Pain Med
https://www.readbyqxmd.com/read/28874215/participatory-design-of-pediatric-upper-limb-prostheses-qualitative-methods-and-prototyping
#18
Tara Sims, Andy Cranny, Cheryl Metcalf, Paul Chappell, Maggie Donovan-Hall
OBJECTIVES: The study aims to develop an understanding of the views of children and adolescents, parents, and professionals on upper limb prosthetic devices to develop and improve device design. Previous research has found that children are dissatisfied with prostheses but has relied heavily on parent proxy reports and quantitative measures (such as questionnaires) to explore their views. METHODS: Thirty-four participants (eight children aged 8-15 years with upper limb difference, nine parents, eight prosthetists, and nine occupational therapists) contributed to the development of new devices through the BRIDGE methodology of participatory design, using focus groups and interviews...
September 6, 2017: International Journal of Technology Assessment in Health Care
https://www.readbyqxmd.com/read/28869160/evaluating-the-use-of-cleft-lip-and-palate-3d-printed-models-as-a-teaching-aid
#19
Ahmad B AlAli, Michelle F Griffin, Wenceslao M Calonge, Peter E Butler
OBJECTIVE: Visualization tools are essential for effective medical education, to aid students understanding of complex anatomical systems. Three dimensional (3D) printed models are showing a wide-reaching potential in the field of medical education, to aid the interpretation of 2D imaging. This study investigates the use of 3D-printed models in educational seminars on cleft lip and palate, by comparing integrated "hands-on" student seminars, with 2D presentation seminar methods. SETTING: Cleft lip and palate models were manufactured using 3D-printing technology at the medical school...
August 28, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28866170/printability-study-of-hydrogel-solution-extrusion-in-nanoclay-yield-stress-bath-during-printing-then-gelation-biofabrication
#20
Yifei Jin, Wenxuan Chai, Yong Huang
Yield-stress support bath-enabled extrusion printing is emerging as a promising filament-based direct-write strategy for different applications in tissue engineering and regenerative medicine. Central to the printing quality of complex three-dimensional structures fabricated by the support bath-enabled fabrication approach is the formation of a continuous filament with well-defined geometry. The objective of this research is to study the printability of hydrogel precursor solutions in a Laponite nanoclay yield-stress bath during extrusion printing where the printed hydrogel precursor solutions remain liquid...
November 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
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