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https://www.readbyqxmd.com/read/28430115/a-systematic-review-of-3-d-printing-in-cardiovascular-and-cerebrovascular-diseases
#1
Zhonghua Sun, Shen Yuan Lee
OBJECTIVE: The application of 3-D printing has been increasingly used in medicine, with research showing many applications in cardiovascular disease. This systematic review analyzes those studies published about the applications of 3-D printed, patient-specific models in cardiovascular and cerebrovascular diseases. METHODS: A search of PubMed/Medline and Scopus databases was performed to identify studies investigating the 3-D printing in cardiovascular and cerebrovascular diseases...
April 10, 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28426301/small-group-randomized-controlled-trial-to-increase-condom-use-and-hiv-testing-among-hispanic-latino-gay-bisexual-and-other-men-who-have-sex-with-men
#2
Scott D Rhodes, Jorge Alonzo, Lilli Mann, Eunyoung Y Song, Amanda E Tanner, Jorge Elias Arellano, Rodrigo Rodriguez-Celedon, Manuel Garcia, Arin Freeman, Beth A Reboussin, Thomas M Painter
OBJECTIVES: To evaluate the HOLA en Grupos intervention, a Spanish-language small-group behavioral HIV prevention intervention designed to increase condom use and HIV testing among Hispanic/Latino gay, bisexual, and other men who have sex with men. METHODS: In 2012 to 2015, we recruited and randomized 304 Hispanic/Latino men who have sex with men, aged 18 to 55 years in North Carolina, to the 4-session HOLA en Grupos intervention or an attention-equivalent general health education comparison intervention...
April 20, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28421875/three-dimensional-printing-and-its-applications-in-otorhinolaryngology-head-and-neck-surgery
#3
Trevor D Crafts, Susan E Ellsperman, Todd J Wannemuehler, Travis D Bellicchi, Taha Z Shipchandler, Avinash V Mantravadi
Objective Three-dimensional (3D)-printing technology is being employed in a variety of medical and surgical specialties to improve patient care and advance resident physician training. As the costs of implementing 3D printing have declined, the use of this technology has expanded, especially within surgical specialties. This article explores the types of 3D printing available, highlights the benefits and drawbacks of each methodology, provides examples of how 3D printing has been applied within the field of otolaryngology-head and neck surgery, discusses future innovations, and explores the financial impact of these advances...
November 1, 2016: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28406364/fume-emissions-from-a-low-cost-3-d-printer-with-various-filaments
#4
Evan L Floyd, Jun Wang, James L Regens
3-D printing is an additive manufacturing process involving the injection of melted thermoplastic polymers, which are then laid down in layers to achieve a pre-designed shape. The heated deposition process raises concerns of potential aerosol and volatile organic compounds (VOC) emission and exposure. The decreasing cost of desktop 3-D printers has made the use of 3-D printers more acceptable in non-industrial workplaces lacking sufficient ventilation. Meanwhile, little is known about the characteristics of 3-D printing fume emission...
April 13, 2017: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/28395417/-dosimetry-verification-of-radioactive-seed-implantation-with-3d-printing-template-and-ct-guidance-for-paravertebral-retroperitoneal-malignant-tumor
#5
Z Ji, Y L Jiang, F X Guo, R Peng, H T Sun, J H Fan, J J Wang
Objective: To compare the dose distributions of postoperative plans with preoperative plans for seeds implantations of paravertebral/retroperitoneal tumors assisted by 3D printing guide template and CT guidance, explore the effects of the technology for seeds implantations in dosimetry level and provide data support for the optimization and standardization in seeds implantation. Methods: Between December 2015 and July 2016, a total of 10 patients with paravertebral/retroperitoneal tumors (12 lesions) received 3D printing template assist radioactive seeds implantations in department of radiation oncology of Peking University Third Hospital, and included in the study...
April 4, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28391101/control-of-vocs-from-printing-press-air-emissions-by-anaerobic-bioscrubber-performance-and-microbial-community-of-an-on-site-pilot-unit
#6
D Bravo, P Ferrero, J M Penya-Roja, F J Álvarez-Hornos, C Gabaldón
A novel process consisted of an anaerobic bioscrubber was studied at the field scale for the removal of volatile organic compounds (VOCs) emitted from a printing press facility. The pilot unit worked under high fluctuating waste gas emissions containing ethanol, ethyl acetate, and 1-ethoxy-2-propanol as main pollutants, with airflows ranging between 184 and 1253 m(3) h(-1) and an average concentration of 1126 ± 470 mg-C Nm(-3). Three scrubber configurations (cross-flow and vertical-flow packings and spray tower) were tested, and cross-flow packing was found to be the best one...
April 6, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28375653/an-innovative-method-of-ocular-prosthesis-fabrication-by-bio-cad-and-rapid-3-d-printing-technology-a-pilot-study
#7
Shahid Alam, M Sugavaneswaran, G Arumaikkannu, Bipasha Mukherjee
Ocular prosthesis is either a readymade stock shell or custom made prosthesis (CMP). Presently, there is no other technology available, which is either superior or even comparable to the conventional CMP. The present study was designed to fabricate ocular prosthesis using computer aided design (CAD) and rapid manufacturing (RM) technology and to compare it with custom made prosthesis (CMP). The ocular prosthesis prepared by CAD was compared with conventional CMP in terms of time taken for fabrication, weight, cosmesis, comfort, and motility...
April 4, 2017: Orbit
https://www.readbyqxmd.com/read/28366210/3d-printed-led-based-on-capillary-detector-housing-with-integrated-slit
#8
Farhan Cecil, Min Zhang, Rosanne M Guijt, Alan Henderson, Pavel N Nesterenko, Brett Paull, Michael C Breadmore, Mirek Macka
A 3D printed photometric detector body with integrated slit was fabricated to position a LED and photodiode either side of capillary tubing using a fused deposition modelling (FDM) printer. To make this approach suitable for capillaries down to 50 μm i.d. the dimension of the in-built slit is the critical element of the printed housing. The spatial orientation of the model for printing was found to significantly impact on the resolution of the structures and voids that can be printed. By designing a housing with a slit positioned in the XY plane in parallel with the print direction, the narrowest void (slit) that could be printed was 70 μm...
May 1, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28362934/three-dimensional-printed-modeling-of-diffuse-low-grade-gliomas-and-associated-white-matter-tract-anatomy
#9
Jayesh P Thawani, Nickpreet Singh, Jared M Pisapia, Kalil G Abdullah, Drew Parker, Bryan A Pukenas, Eric L Zager, Ragini Verma, Steven Brem
BACKGROUND: Diffuse low-grade gliomas (DLGGs) represent several pathological entities that infiltrate and invade cortical and subcortical structures in the brain. OBJECTIVE: To describe methods for rapid prototyping of DLGGs and surgically relevant anatomy. METHODS: Using high-definition imaging data and rapid prototyping technologies, we were able to generate 3 patient DLGGs to scale and represent the associated white matter tracts in 3 dimensions using advanced diffusion tensor imaging techniques...
April 1, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28358629/reconstruction-of-a-mandibular-segmental-defect-with-a-customized-3-dimensional-printed-titanium-prosthesis-in-a-cat-with-a-mandibular-osteosarcoma
#10
Julius M Liptak, Graham P Thatcher, Jonathan P Bray
CASE DESCRIPTION A 12-year-old neutered male domestic shorthair cat had been treated for a mass arising from the lingual aspect of the caudal right mandibular body. Cytoreductive surgery of the mass had been performed twice over a 2-year period, but the mass recurred following both surgeries. The mass was diagnosed as an osteosarcoma, and the cat was referred for further evaluation and treatment. CLINICAL FINDINGS Clinical findings were unremarkable, except for a 2-cm-diameter mass arising from the lingual aspect of the right mandible and mild anemia and lymphopenia...
April 15, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/28357113/identification-of-animal-movement-patterns-using-tri-axial-magnetometry
#11
Hannah J Williams, Mark D Holton, Emily L C Shepard, Nicola Largey, Brad Norman, Peter G Ryan, Olivier Duriez, Michael Scantlebury, Flavio Quintana, Elizabeth A Magowan, Nikki J Marks, Abdulaziz N Alagaili, Nigel C Bennett, Rory P Wilson
BACKGROUND: Accelerometers are powerful sensors in many bio-logging devices, and are increasingly allowing researchers to investigate the performance, behaviour, energy expenditure and even state, of free-living animals. Another sensor commonly used in animal-attached loggers is the magnetometer, which has been primarily used in dead-reckoning or inertial measurement tags, but little outside that. We examine the potential of magnetometers for helping elucidate the behaviour of animals in a manner analogous to, but very different from, accelerometers...
2017: Movement Ecology
https://www.readbyqxmd.com/read/28337049/use-of-3d-printed-bone-plate-in-novel-technique-to-surgically-correct-hallux-valgus-deformities
#12
Kathryn E Smith, Kenneth M Dupont, David L Safranski, Jeremy Blair, Dawn Buratti, Vladimir Zeetser, Ryan Callahan, Jason Lin, Ken Gall
Three-dimensional (3-D) printing offers many potential advantages in designing and manufacturing plating systems for foot and ankle procedures that involve small, geometrically complex bony anatomy. Here, we describe the design and clinical use of a Ti-6Al-4V ELI bone plate (FastForward™ Bone Tether Plate, MedShape, Inc., Atlanta, GA) manufactured through 3-D printing processes. The plate protects the second metatarsal when tethering suture tape between the first and second metatarsals and is a part of a new procedure that corrects hallux valgus (bunion) deformities without relying on doing an osteotomy or fusion procedure...
September 2016: Techniques in Orthopaedics: TIO
https://www.readbyqxmd.com/read/28328198/all-printable-zno-quantum-dots-graphene-van-der-waals-heterostructures-for-ultrasensitive-detection-of-ultraviolet-light
#13
Maogang Gong, Qingfeng Liu, Brent Cook, Bhupal Kattel, Ti Wang, Wai-Lun Chan, Dan Ewing, Matthew Casper, Alex Stramel, Judy Z Wu
In ZnO quantum dot/graphene heterojunction photodetectors, fabricated by printing quantum dots (QDs) directly on the graphene field-effect transistor (GFET) channel, the combination of the strong quantum confinement in ZnO QDs and the high charge mobility in graphene allows extraordinary quantum efficiency (or photoconductive gain) in visible-blind ultraviolet (UV) detection. Key to the high performance is a clean van der Waals interface to facilitate an efficient charge transfer from ZnO QDs to graphene upon UV illumination...
March 24, 2017: ACS Nano
https://www.readbyqxmd.com/read/28323466/sexual-assault-victimization-and-mental-health-treatment-suicide-attempts-and-career-outcomes-among-women-in-the-us-army
#14
Anthony J Rosellini, Amy E Street, Robert J Ursano, Wai Tat Chiu, Steven G Heeringa, John Monahan, James A Naifeh, Maria V Petukhova, Ben Y Reis, Nancy A Sampson, Paul D Bliese, Murray B Stein, Alan M Zaslavsky, Ronald C Kessler
OBJECTIVES: To examine associations of administratively recorded sexual assault victimization during military service with subsequent mental health and negative career outcomes among US Army women controlling for nonrandom victimization exposure. METHODS: We used data from the Army Study to Assess Risk and Resilience in Servicemembers to apply propensity score methods to match all 4238 female Regular Army soldiers with administratively recorded sexual assault victimization during 2004 to 2009 to 5 controls per case with similar composite victimization risk...
May 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28300229/impedance-spectroscopy-for-monosaccharides-detection-using-responsive-hydrogel-modified-paper-based-electrodes
#15
C M Daikuzono, C Delaney, H Tesfay, L Florea, O N Oliveira, A Morrin, D Diamond
Herein we present a novel sensor for the detection of monosaccharides (e.g. glucose, fructose) in solution, using electrical impedance spectroscopy. The sensor is based on carbon interdigitated electrodes, printed on paper using screen printing. The surface of the electrodes was modified with a thin layer of hydrogel containing acrylamide copolymerised with 20 mol% 3-(Acrylamido)phenylboronic acid (PBA). It was observed that the hydrogel layers containing 20 mol% PBA swell considerably in the presence of glucose and fructose...
March 16, 2017: Analyst
https://www.readbyqxmd.com/read/28275838/economic-evaluation-of-a-population-based-osteoporosis-intervention-for-outpatients-with-non-traumatic-non-hip-fractures-the-catch-a-break-1i-type-c-fls
#16
S R Majumdar, D A Lier, D A Hanley, A G Juby, L A Beaupre
Fracture liaison services (FLS) are advocated to improve osteoporosis treatment after fragility fracture, but there are few economic analyses of different models. A population-based 1i [=type C] FLS for non-hip fractures was implemented and it costs $44 per patient and it was very cost-effective ($9200 per QALY gained). Small operational changes would convert it from cost-effective to cost-saving. INTRODUCTION: After fragility fracture, <20% of patients receive osteoporosis treatment...
March 9, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28270051/towards-an-understanding-of-marine-fouling-effects-on-the-vortex-induced-vibrations-of-circular-cylinders-partial-coverage-issue
#17
M Zeinoddini, A Bakhtiari, F Schoefs, A P Zandi
The results of in-water vortex-induced vibration (VIV) experiments on circular cylinders artificially covered with barnacles are reported. The paper focusses on the effects of the partial coverage and the shape of the fouling elements. An artificial barnacle typical of marine fouling was synthesised using 3-D printing. Coverage ratios of 80, 50 and 30% were examined and the results compared with those from a smooth cylinder. The Reynolds number ranged from 5.8 × 10(3) to 6.6 × 10(4). The experimental results show that the fouling reduced the peak VIV amplitude, narrowed the synchronisation region and lowered the hydrodynamic force coefficients such as the coefficients of lift force RMS, the mean drag force and the fluctuating drag force RMS...
March 2017: Biofouling
https://www.readbyqxmd.com/read/28270050/water-quality-and-daily-temperature-cycle-affect-biofilm-formation-in-drip-irrigation-devices-revealed-by-optical-coherence-tomography
#18
Jueying Qian, Harald Horn, Jorge Tarchitzky, Yona Chen, Sagi Katz, Michael Wagner
Drip irrigation is a water-saving technology. To date, little is known about how biofilm forms in drippers of irrigation systems. In this study, the internal dripper geometry was recreated in 3-D printed microfluidic devices (MFDs). To mimic the temperature conditions in (semi-) arid areas, experiments were conducted in a temperature controlled box between 20 and 50°C. MFDs were either fed with two different treated wastewater (TWW) or synthetic wastewater. Biofilm formation was monitored non-invasively and in situ by optical coherence tomography (OCT)...
March 2017: Biofouling
https://www.readbyqxmd.com/read/28269689/designing-and-testing-a-wearable-wireless-fnirs-patch
#19
Mohammadreza Abtahi, Gozde Cay, Manob Jyoti Saikia, Kunal Mankodiya
Optical brain monitoring using near infrared (NIR) light has got a lot of attention in order to study the complexity of the brain due to several advantages as oppose to other methods such as EEG, fMRI and PET. There are a few commercially available functional NIR spectroscopy (fNIRS) brain monitoring systems, but they are still non-wearable and pose difficulties in scanning the brain while the participants are in motion. In this work, we present our endeavors to design and test a low-cost, wireless fNIRS patch using NIR light sources at wavelengths of 770 and 830nm, photodetectors and a microcontroller to trigger the light sources, read photodetector's output and transfer data wirelessly (via Bluetooth) to a smart-phone...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269245/a-low-cost-3-d-printed-stethoscope-connected-to-a-smartphone
#20
Carlos Aguilera-Astudillo, Marx Chavez-Campos, Alan Gonzalez-Suarez, Jose L Garcia-Cordero
We demonstrate the fabrication of a digital stethoscope using a 3D printer and commercial off-the-shelf electronics. A chestpiece consists of an electret microphone embedded into the drum of a 3D printed chestpiece. An electronic dongle amplifies the signal from the microphone and reduces any external noise. It also adjusts the signal to the voltages accepted by the smartphones headset jack. A graphical user interface programmed in Android displays the signals processed by the dongle. The application also saves the processed signal and sends it to a physician...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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