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3-D Printing

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https://www.readbyqxmd.com/read/29225442/increasing-physical-activity-in-black-women-results-from-a-randomized-trial-conducted-in-faith-based-settings
#1
Melicia C Whitt-Glover, Moses V Goldmon, Ziya Gizlice, Marie Sillice, Lyndsey Hornbuckle, Daniel P Heil
Objective: The Learning and Developing Individual Exercise Skills (L.A.D.I.E.S.) for a Better Life study compared a faith-integrated (FI) and a secular (SEC) intervention for increasing physical activity with a self-guided (SG) control group among African American women. Design/Setting/Participants: L.A.D.I.E.S. was a cluster randomized, controlled trial. Churches (n=31) were randomized and women within each church (n=12 - 15) received the same intervention. Interventions: FI and SEC participants received 24 group-based sessions, delivered over 10 months...
2017: Ethnicity & Disease
https://www.readbyqxmd.com/read/29222738/ct-based-3d-printing-is-superior-to-transesophageal-echocardiography-for-pre-procedure-planning-in-left-atrial-appendage-device-closure
#2
Edinrin Obasare, Sumeet K Mainigi, D Lynn Morris, Leandro Slipczuk, Igor Goykhman, Evan Friend, Mary Rodriguez Ziccardi, Gregg S Pressman
Accurate assessment of the left atrial appendage (LAA) is important for pre-procedure planning when utilizing device closure for stroke reduction. Sizing is traditionally done with transesophageal echocardiography (TEE) but this is not always precise. Three-dimensional (3D) printing of the LAA may be more accurate. 24 patients underwent Watchman device (WD) implantation (71 ± 11 years, 42% female). All had complete 2-dimensional TEE. Fourteen also had cardiac computed tomography (CCT) with 3D printing to produce a latex model of the LAA for pre-procedure planning...
December 8, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29221242/practical-clinical-applications-of-3-d-printing-in-cardiovascular-surgery
#3
EDITORIAL
Tom Treasure, Tal Golesworthy, John Pepper
No abstract text is available yet for this article.
September 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29204709/modality-of-exercise-influences-rate-of-decrease-in-depression-for-cancer-survivors-with-elevated-depressive-symptomatology
#4
Gregory T Levin, Kenneth M Greenwood, Favil Singh, Robert U Newton
PURPOSE: This three-arm feasibility controlled trial examined whether different exercise modalities provide reductions in depression symptoms to cancer survivors with elevated depression. METHODS: Thirty-two participants (58.9 ± 9.4 years) were allocated to a 12-week supervised exercise group (EX; n = 10), a self-managed home-based exercise group (SMHB; n = 8), or a usual care control group (CONT; n = 14). EX performed two supervised resistance and aerobic sessions per week...
December 4, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/29204424/3-d-bioprinting-of-neural-tissue-for-applications-in-cell-therapy-and-drug-screening
#5
REVIEW
Michaela Thomas, Stephanie M Willerth
Neurodegenerative diseases affect millions of individuals in North America and cost the health-care industry billions of dollars for treatment. Current treatment options for degenerative diseases focus on physical rehabilitation or drug therapies, which temporarily mask the effects of cell damage, but quickly lose their efficacy. Cell therapies for the central nervous system remain an untapped market due to the complexity involved in growing neural tissues, controlling their differentiation, and protecting them from the hostile environment they meet upon implantation...
2017: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/29198733/virtual-medicine-utilization-of-the-advanced-cardiac-imaging-patient-avatar-for-procedural-planning-and-facilitation
#6
REVIEW
Jerold S Shinbane, Leslie A Saxon
Advances in imaging technology have led to a paradigm shift from planning of cardiovascular procedures and surgeries requiring the actual patient in a "brick and mortar" hospital to utilization of the digitalized patient in the virtual hospital. Cardiovascular computed tomographic angiography (CCTA) and cardiovascular magnetic resonance (CMR) digitalized 3-D patient representation of individual patient anatomy and physiology serves as an avatar allowing for virtual delineation of the most optimal approaches to cardiovascular procedures and surgeries prior to actual hospitalization...
November 16, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/29161071/risk-of-concussion-during-sports-versus-physical-education-among-new-mexico-middle-and-high-school-students
#7
Richard A Campbell, Stephanie A Gorman, Robert J Thoma, Robert D Annett, Christopher A McGrew, Ronald A Yeo, Andrew R Mayer, John H King, Andrew S Rowland
OBJECTIVES: To measure the risk of concussion among New Mexico middle and high school students during both sports and physical education. METHODS: Athletic directors or athletic trainers in 147 schools were asked to report the number of concussions occurring during sports and physical education in the 2013 to 2014 school year. We calculated 1-year cumulative incidence rates. RESULTS: Of the 147 schools, 99 responded (67%). During the school year, 598 students were removed from athletics because of a concussion, a 1-year cumulative incidence of 3...
November 21, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/29124128/vascular-deformation-mapping-vdm-of-thoracic-aortic-enlargement-in-aneurysmal-disease-and-dissection
#8
Nicholas S Burris, Benjamin A Hoff, Ella A Kazerooni, Brian D Ross
Thoracic aortic aneurysm is a common and lethal disease that requires regular imaging surveillance to determine timing of surgical repair and prevent major complications such as rupture. Current cross-sectional imaging surveillance techniques, largely based on computed tomography angiography, are focused on measurement of maximal aortic diameter, although this approach is limited to fixed anatomic positions and is prone to significant measurement error. Here we present preliminary results showing the feasibility of a novel technique for assessing change in aortic dimensions, termed vascular deformation mapping (VDM)...
September 2017: Tomography: a Journal for Imaging Research
https://www.readbyqxmd.com/read/29118699/performance-and-usability-of-various-robotic-arm-control-modes-from-human-force-signals
#9
Sébastien Mick, Daniel Cattaert, Florent Paclet, Pierre-Yves Oudeyer, Aymar de Rugy
Elaborating an efficient and usable mapping between input commands and output movements is still a key challenge for the design of robotic arm prostheses. In order to address this issue, we present and compare three different control modes, by assessing them in terms of performance as well as general usability. Using an isometric force transducer as the command device, these modes convert the force input signal into either a position or a velocity vector, whose magnitude is linearly or quadratically related to force input magnitude...
2017: Frontiers in Neurorobotics
https://www.readbyqxmd.com/read/29116866/functional-changes-through-the-usage-of-3d-printed-transitional-prostheses-in-children
#10
Jorge M Zuniga, Jean L Peck, Rakesh Srivastava, James E Pierce, Drew R Dudley, Nicholas A Than, Nicholas Stergiou
INTRODUCTION: There is limited knowledge on the use of 3 D-printed transitional prostheses, as they relate to changes in function and strength. Therefore, the purpose of this study was to identify functional and strength changes after usage of 3 D-printed transitional prostheses for multiple weeks for children with upper-limb differences. MATERIALS AND METHODS: Gross manual dexterity was assessed using the Box and Block Test and wrist strength was measured using a dynamometer...
November 8, 2017: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/29111337/the-vocal-tract-organ-a-new-musical-instrument-using-3-d-printed-vocal-tracts
#11
David M Howard
The advent and now increasingly widespread availability of 3-D printers is transforming our understanding of the natural world by enabling observations to be made in a tangible manner. This paper describes the use of 3-D printed models of the vocal tract for different vowels that are used to create an acoustic output when stimulated with an appropriate sound source in a new musical instrument: the Vocal Tract Organ. The shape of each printed vocal tract is recovered from magnetic resonance imaging. It sits atop a loudspeaker to which is provided an acoustic L-F model larynx input signal that is controlled by the notes played on a musical instrument digital interface device such as a keyboard...
October 27, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/29109282/aggregation-control-in-natural-brush-printed-conjugated-polymer-films-and-implications-for-enhancing-charge-transport
#12
Gang Wang, Wei Huang, Nicholas D Eastham, Simone Fabiano, Eric F Manley, Li Zeng, Binghao Wang, Xinan Zhang, Zhihua Chen, Ran Li, Robert P H Chang, Lin X Chen, Michael J Bedzyk, Ferdinand S Melkonyan, Antonio Facchetti, Tobin J Marks
Shear-printing is a promising processing technique in organic electronics for microstructure/charge transport modification and large-area film fabrication. Nevertheless, the mechanism by which shear-printing can enhance charge transport is not well-understood. In this study, a printing method using natural brushes is adopted as an informative tool to realize direct aggregation control of conjugated polymers and to investigate the interplay between printing parameters, macromolecule backbone alignment and aggregation, and charge transport anisotropy in a conjugated polymer series differing in architecture and electronic structure...
November 6, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29099776/towards-the-development-of-a-low-cost-device-for-the-detection-of-explosives-vapors-by-fluorescence-quenching-of-conjugated-polymers-in-solid-matrices
#13
Liliana M Martelo, Tiago F Pimentel das Neves, João Figueiredo, Lino Marques, Alexander Fedorov, Ana Charas, Mário N Berberan-Santos, Hugh D Burrows
Conjugated polymers (CPs) have proved to be promising chemosensory materials for detecting nitroaromatic explosives vapors, as they quickly convert a chemical interaction into an easily-measured high-sensitivity optical output. The nitroaromatic analytes are strongly electron-deficient, whereas the conjugated polymer sensing materials are electron-rich. As a result, the photoexcitation of the CP is followed by electron transfer to the nitroaromatic analyte, resulting in a quenching of the light-emission from the conjugated polymer...
November 3, 2017: Sensors
https://www.readbyqxmd.com/read/29098169/optimized-b-value-selection-for-the-discrimination-of-prostate-cancer-grades-including-the-cribriform-pattern-using-diffusion-weighted-imaging
#14
Sarah L Hurrell, Sean D McGarry, Amy Kaczmarowski, Kenneth A Iczkowski, Kenneth Jacobsohn, Mark D Hohenwalter, William A Hall, William A See, Anjishnu Banerjee, David K Charles, Marja T Nevalainen, Alexander C Mackinnon, Peter S LaViolette
Multiparametric magnetic resonance imaging (MP-MRI), including diffusion-weighted imaging, is commonly used to diagnose prostate cancer. This radiology-pathology study correlates prostate cancer grade and morphology with common b-value combinations for calculating apparent diffusion coefficient (ADC). Thirty-nine patients undergoing radical prostatectomy were recruited for MP-MRI prior to surgery. Diffusion imaging was collected with seven b-values, and ADC was calculated. Excised prostates were sliced in the same orientation as the MRI using 3-D printed slicing jigs...
January 2018: Journal of Medical Imaging
https://www.readbyqxmd.com/read/29077123/photophysical-dynamics-of-a-binuclear-cu-i-emitter-on-the-fs-to-%C3%AE-s-timescale-in-solid-phase-and-in-solution
#15
F Bäppler, M Zimmer, F Dietrich, M Grupe, M Wallesch, D Volz, S Bräse, M Gerhards, R Diller
Understanding subtle aspects of photophysical behavior is the key to design and synthesize new and improved luminescent materials. We contribute to this with an in-depth photophysical characterization of the binuclear copper complex Cu(i)-NHetPHOS-tris-m-tolylphosphine (1), a member of a recently established emitter class for ultra-efficient, printed organic light-emitting diodes (OLEDs). To this end we studied 1 in solution and in solid form, i.e. neat film and KBr-pellet, by means of femtosecond time-resolved transient absorption/reflectivity, time-correlated single photon counting (TCSPC), and nanosecond time-resolved step-scan FTIR spectroscopy...
November 8, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29072932/global-association-of-air-pollution-and-cardiorespiratory-diseases-a-systematic-review-meta-analysis-and-investigation-of-modifier-variables
#16
Weeberb J Requia, Matthew D Adams, Altaf Arain, Stefania Papatheodorou, Petros Koutrakis, Moataz Mahmoud
BACKGROUND: Little is known about the health risks of air pollution and cardiorespiratory diseases, globally, across regions and populations, which may differ because of external factors. OBJECTIVES: We systematically reviewed the evidence on the association between air pollution and cardiorespiratory diseases (hospital admissions and mortality), including variability by energy, transportation, socioeconomic status, and air quality. SEARCH METHODS: We conducted a literature search (PubMed and Web of Science) for studies published between 2006 and May 11, 2016...
October 26, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/29068896/updates-in-head-and-neck-reconstruction
#17
Rene D Largo, Patrick B Garvey
LEARNING OBJECTIVES: After reading this article, the participant should: 1. have a basic understanding of virtual planning, rapid prototype modeling, 3D printing, and computer-assisted design and manufacture, 2. understand the principles of combining virtual planning and vascular mapping, 3. understand principles of flap choice and design in preoperative planning of free osteocutaneous flaps in mandible and midface reconstruction, and 4. discuss advantages and disadvantages of computer-assisted design and manufacture in reconstruction of advanced oncologic mandible and midface defects...
October 13, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29066243/sustained-local-delivery-of-high-concentration-vancomycin-from-a-hybrid-biodegradable-antibiotic-eluting-nanofiber-loaded-endovascular-prosthesis-for-treatment-of-mycotic-aortic-aneurysms
#18
Kuo-Sheng Liu, Cheng-Hung Lee, Demei Lee, Michelle Liu, Feng-Chun Tsai, Yuan-Yun Tseng
BACKGROUND: Endovascular repair for mycotic aortic aneurysm (MAA) is a less invasive alternative to open surgery, although the placement of a stent graft in an infected environment remains controversial. In this study, we developed hybrid biodegradable, vancomycin-eluting, nanofiber-loaded endovascular prostheses and evaluated antibiotic release from the endovascular prostheses both in vitro and in vivo. METHODS: Poly(D,L)-lactide-co-glycolide and vancomycin were dissolved in 1,1,1,3,3,3-hexafluoro-2-propanol...
October 21, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29059836/design-of-patient-specific-concentric-tube-robots-using-path-planning-from-3-d-ultrasound
#19
Tania K Morimoto, Juan J Cerrolaza, Michael H Hsieh, Kevin Cleary, Allison M Okamura, Marius George Linguraru
Percutaneous techniques and robot-assisted surgical systems have enabled minimally invasive procedures that offer reduced scarring, recovery time, and complications compared to traditional open surgeries. Despite these improvements, access to diseased sites using the standard, straight needle-based percutaneous techniques is still limited for certain procedures due to intervening tissues. These limitations can be further exacerbated in specific patient groups, particularly pediatric patients, whose anatomy does not fit the traditional tools and systems...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28971318/preferences-for-multigene-panel-testing-for-hereditary-breast-cancer-risk-among-ethnically-diverse-brca-uninformative-families
#20
Belinda Vicuña, Harold D Delaney, Kristina G Flores, Lori Ballinger, Melanie Royce, Zoneddy Dayao, Tuya Pal, Anita Y Kinney
Until recently, genetic testing for hereditary breast cancer has primarily focused on pathogenic variants in the BRCA1 and BRCA2 (BRCA) genes. However, advances in DNA sequencing technologies have made simultaneous testing for multiple genes possible. We examined correlates of interest in multigene panel testing and risk communication preferences in an ethnically diverse sample of women who tested negative for BRCA mutations previously but remain at high risk based on their family history (referred to as "BRCA-uninformative") and their at-risk female family members...
October 2, 2017: Journal of Community Genetics
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