keyword
MENU ▼
Read by QxMD icon Read
search

Passing out

keyword
https://www.readbyqxmd.com/read/28089874/mathematical-modelling-of-cell-layer-growth-in-a-hollow-fibre-bioreactor
#1
Lloyd A C Chapman, Jonathan P Whiteley, Helen M Byrne, Sarah L Waters, Rebecca J Shipley
Generating autologous tissue grafts of a clinically useful volume requires efficient and controlled expansion of cell populations harvested from patients. Hollow fibre bioreactors show promise as cell expansion devices, owing to their potential for scale-up. However, further research is required to establish how to specify appropriate hollow fibre bioreactor operating conditions for expanding different cell types. In this study we develop a simple model for the growth of a cell layer seeded on the outer surface of a single fibre in a perfused hollow fibre bioreactor...
January 12, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28080012/medicaid-s-future-what-might-aca-repeal-mean
#2
Sara Rosenbaum, Sara Rothenberg, Rachel Gunsalus, Sara Schmucker
Issue: Republicans in Congress are expected to repeal portions of the Affordable Care Act (ACA) using a fast-track process known as budget reconciliation. Goals: This issue brief examines how repeal legislation could affect Medicaid, the nation’s health care safety net, which insured 70 million people in 2016. Findings and Conclusions: Partial-repeal legislation that passed Congress but was vetoed by President Obama in 2016 offers some insight but new legislation could go further. It could repeal the ACA’s Medicaid eligibility expansions for adults and children but also roll back other provisions, such as simplified enrollment and improvements in long-term services and supports for beneficiaries with disabilities...
2017: Issue Brief of the Commonwealth Fund
https://www.readbyqxmd.com/read/28079754/ultrasound-guided-needle-technique-accuracy-prospective-comparison-of-passive-magnetic-tracking-versus-unassisted-echogenic-needle-localization
#3
Angela N Johnson, Jeffery S Peiffer, Nahi Halmann, Luke Delaney, Cindy A Owen, Jeff Hersh
BACKGROUND AND OBJECTIVES: Ultrasound-guided regional anesthesia facilitates an approach to sensitive targets such as nerve clusters without contact or inadvertent puncture. We compared accuracy of needle placement with a novel passive magnetic ultrasound needle guidance technology (NGT) versus conventional ultrasound (CU) with echogenic needles. METHODS: Sixteen anesthesiologists and 19 residents performed a series of 16 needle insertion tasks each, 8 using NGT (n = 280) and 8 using CU (n = 280), in high-fidelity porcine phantoms...
January 11, 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28079525/a-model-based-3d-patient-specific-pre-treatment-qa-method-for-vmat-using-the-epid
#4
Peter M McCowan, Ganiyu Asuni, Timothy van Beek, Eric Van Uytven, Kaden Kujanpaa, Boyd McCurdy
This study reports the development and validation of the first model-based, 3D patient dose reconstruction method for pre-treatment quality assurance using EPID images. The method is also investigated for sensitivity to potential MLC delivery errors. Each cine-mode EPID image acquired during plan delivery was processed using a previously developed back-projection dose reconstruction model providing a 3D dose estimate on the CT simulation data. Validation was carried out using 24 SBRT-VMAT patient plans by comparing: 1) ion chamber point dose measurements in a solid water phantom, 2) the treatment planning system (TPS) predicted 3D dose to the EPID reconstructed 3D dose in a solid water phantom, and 3) the TPS predicted 3D dose to the EPID and our forward predicted reconstructed 3D dose in the patient (CT data)...
January 12, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28079174/alleviating-liver-failure-conditions-using-an-integrated-hybrid-cryogel-based-cellular-bioreactor-as-a-bioartificial-liver-support
#5
Apeksha Damania, Mohsin Hassan, Nana Shirakigawa, Hiroshi Mizumoto, Anupam Kumar, Shiv K Sarin, Hiroyuki Ijima, Masamichi Kamihira, Ashok Kumar
Conventionally, some bioartificial liver devices are used with separate plasmapheresis unit to separate out plasma from whole blood and adsorbent column to detoxify plasma before it passes through a hepatocytes-laden bioreactor. We aim to develop a hybrid bioreactor that integrates the separate modules in one compact design improving the efficacy of the cryogel based bioreactor as a bioartificial liver support. A plasma separation membrane and an activated carbon cloth are placed over a HepG2-loaded cryogel scaffold in a three-chambered bioreactor design...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28074363/risk-assessment-of-agriculture-impact-on-the-fr%C3%A3-o-river-watershed-and-ca%C3%A3-o-negro-ramsar-wetland-costa-rica
#6
María-Luisa Fournier, Silvia Echeverría-Sáenz, Freylan Mena, María Arias-Andrés, Elba de la Cruz, Clemens Ruepert
The Caño Negro Ramsar wetland is a conservation area of great natural and societal value, located in the lower part of the Frío River watershed in the north of Costa Rica. Its aquatic ecosystems may be considered vulnerable to pollution due to recent changes in land use toward agriculture. In 2011 and 2012, quarterly sampling was done at ten sites located in the middle and lower sections of the Frío River Basin that pass through crop areas and later drain into Caño Negro wetland. Pesticide residues, nitrates, sediment concentrations, and diversity of benthic macroinvertebrates and fish biomarkers were studied in the selected sites...
January 10, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28071707/the-content-of-imagined-sounds-changes-visual-motion-perception-in-the-cross-bounce-illusion
#7
Christopher C Berger, H Henrik Ehrsson
Can what we imagine hearing change what we see? Whether imagined sensory stimuli are integrated with external sensory stimuli to shape our perception of the world has only recently begun to come under scrutiny. Here, we made use of the cross-bounce illusion in which an auditory stimulus presented at the moment two passing objects meet promotes the perception that the objects bounce off rather than cross by one another to examine whether the content of imagined sound changes visual motion perception in a manner that is consistent with multisensory integration...
January 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28069270/treatment-of-subcutaneous-abscesses-in-children-with-incision-and-loop-drainage-a-simplified-method-of-care
#8
Charles J Aprahamian, Hilana Nashad, Nerina DiSomma, Breanna Elger, Joseph Esparaz, Thomas McMorrow, Alexandria Shadid, Angie Kao, Mark J Holterman, Robert C Kanard, Richard H Pearl
PURPOSE: The aim of this study was to expand on our previous report of 115 patients after more than a decade-long experience using incision and loop drainage for pediatric subcutaneous abscess management. This report comprises the largest consecutive series of pediatric abscess patients from a single institution ever recorded. METHODS: A retrospective study was performed of all pediatric patients who underwent incision and loop drainage of subcutaneous abscesses at our institution between January 2002 and December 2014...
December 30, 2016: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28068570/treatment-of-actual-effluents-produced-in-the-manufacturing-of-atrazine-by-a-photo-electrolytic-process
#9
José M Aquino, Douglas W Miwa, Manuel A Rodrigo, Artur J Motheo
The photo-assisted electrochemical degradation of a real effluent of the atrazine manufacturing process containing atrazine, simazine, hydroxy-triazine and propazine was carried out galvanostatically using a pilot-scale tubular flow reactor prototype containing DSA(®) and Ti as cathode. The effluent was mainly characterized by a high amount of NaCl, required in the synthesis route used, and it was used as taken in the factory. The variables for process optimization were the current density (3.0, 6.0, and 9...
January 2, 2017: Chemosphere
https://www.readbyqxmd.com/read/28067939/care-strategies-and-therapeutic-pathways-for-chronic-pain-patients-in-abruzzo-region-italy
#10
C Leuter, A Piroli, A Paladini, M Tudini, G Varrassi
BACKGROUND: Chronic pain is considered to be among the most disabling and costly diseases in North America, Europe and Australia. A large survey was conducted on chronic pain in Europe, called Pain in Europe. Italy ranks third in Europe in terms of prevalence, with 26% of the population suffering from chronic pain at some point. In 2010 Italy passed Law 38/2010, to ensure treatment for pain control in patients with oncological diseases as well as in patients with chronic non-cancer pain through a network of care services...
January 2017: Annali di Igiene: Medicina Preventiva e di Comunità
https://www.readbyqxmd.com/read/28061029/evidence-of-faradaic-reactions-in-electrostatic-atomizers
#11
Abhilash Sankaran, Christopher Staszel, Rakesh Prasad Sahu, Alexander L Yarin, Farzad Mashayek
Any rational theory of the electrostatic atomizers (EA) would require detailed understanding of the nature of the polarized near electrode layer, since this is the source of the electric charge carried by the jets issued from the EAs. The polarized layer either is driven out as the electrically-driven Smoluchowski flow and/or entrained by the viscous shear imposed by the bulk flow. The standard Gouy-Chapman theory of polarized diffuse layers implies zero electric current passing across the layer, which is impossible to reconcile with the fact that there are leak currents in the EAs...
January 6, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28060245/the-hook-and-release-technique-during-enucleation-surgery
#12
David R Jordan, Bazil Stoica, Jonathan J Dutton
PURPOSE: To describe the results and potential benefit of direct muscle release from the globe during enucleation surgery without identifying sutures in the rectus muscle insertion sites, a technique referred to as the hook and release technique. METHODS: Single center, retrospective chart review of patients who underwent enucleation with direct removal of the rectus muscles without identifying sutures in their insertion sites between January 2011 and September 2015 was carried out...
January 5, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28052283/the-feasibility-of-conservative-management-for-morbidly-adherent-placenta-accidentally-encountered-after-vaginal-delivery
#13
Ran Cui, Junli Lu, Zhenyu Zhang, Huimin Bai
OBJECTIVE: To evaluate the feasibility of conservative management for patients with morbidly adherent placenta (MAP) accidentally encountered after term vaginal delivery. METHODS: Medical records of patients with MAP who were accidentally encountered after term vaginal delivery and treated in our hospital from January 2009 to December 2015 were retrospectively reviewed. RESULTS: A total of 8 eligible patients were included in this analysis...
January 5, 2017: Gynecologic and Obstetric Investigation
https://www.readbyqxmd.com/read/28051980/physical-performance-and-attrition-among-u-s-air-force-trainees-participating-in-the-basic-military-training-fueling-initiative
#14
Carrissa G Bartlett, Susan Stankorb
INTRODUCTION: Dietary intake of military initial entry trainees is often inadequate because of the structured food environment, lack of snacking, and limited time for meals. Inadequate intake during training increases risk for injury, poor performance, and attrition from training. A performance nutrition initiative was implemented at Joint Base San Antonio Lackland to mitigate this inadequacy in Air Force trainees and better reflect recommendations for active populations and mitigate nutritional inadequacy...
January 2017: Military Medicine
https://www.readbyqxmd.com/read/28048775/mo-fg-campus-tep1-04-pseudo-in-vivo-dose-verification-of-a-new-mono-isocentric-technique-for-the-treatment-of-multiple-brain-metastases
#15
E P Pappas, N Papanikolaou, G Kalaitzakis, T Boursianis, D Makris, V Lahanas, I Genitsarios, S Stathakis, L Watts, T Maris, E Pappas
PURPOSE: To validate dose calculation and delivery accuracy of a recently introduced mono-isocentric technique for the treatment of multiple brain metastases in a realistic clinical case. METHODS: Anonymized CT scans of a patient were used to model a hollow phantom that duplicates anatomy of the skull. A 3D printer was used to construct the phantom of a radiologically bone-equivalent material. The hollow phantom was subsequently filled with a polymer gel 3D dosimeter which also acted as a water-equivalent material...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048688/su-f-t-155-validation-of-a-commercial-monte-carlo-dose-calculation-algorithm-for-proton-therapy
#16
J Saini, S St James, E Traneus, T Wong, R Stewart, C Bloch
PURPOSE: Compare proton pencil beam scanning dose measurements to GATE/GEANT4 (GMC) and RayStation™ Monte Carlo (RMC) simulations. METHODS: Proton pencil beam models of the IBA gantry at the Seattle Proton Therapy Center were developed in the GMC code system and a research build of the RMC. For RMC, a preliminary beam model that does not account for upstream halo was used. Depth dose and lateral profiles are compared for the RMC, GMC and a RayStation™ pencil beam dose (RPB) model for three spread out Bragg peaks (SOBPs) in homogenous water phantom...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048674/su-f-t-215-an-investigation-of-multi-scanner-ct-hounsfield-unit-calibration-for-pencil-beam-scanning-proton-therapy-using-3d-gamma-analysis
#17
J Zhang, X Li, G Liu, Q Liu, J Liang, X Ding
PURPOSE: We compare and investigate the dosimetric impacts on pencil beam scanning (PBS) proton treatment plans generated with CT calibration curves from four different CT scanners and one averaged 'global' CT calibration curve. METHODS: The four CT scanners are located at three different hospital locations within the same health system. CT density calibration curves were collected from these scanners using the same CT calibration phantom and acquisition parameters...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048625/tu-h-206-02-novel-linearly-filled-derenzo-pet-phantom-design
#18
S Graves, B Cox, M Farhoud, H Valdovinos, J Jeffery, K Eliceiri, T Barnhart, R Nickles
PURPOSE: To design a linearly-filled Derenzo positron emission tomography (PET) phantom, eliminating the extraneous radioisotope volumes in a conventional reservoir-type design. This activity reduction combined with the elimination of bubbles in smaller phantom channels would significantly reduce personnel dose, radioisotope cost, and would improve image quality by reducing out-of-slice activity scatter. METHODS: A computer-aided design (CAD) was created of a modular Derenzo phantom consisting of three phantom layers with gaskets between the layers...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048614/su-f-t-273-using-a-diode-array-to-explore-the-weakness-of-tps-dosecalculation-algorithm-for-vmat-and-sliding-window-techniques
#19
J Park, B Lu, G Yan, J Park, F Li, J Li, C Liu
PURPOSE: To identify the weakness of dose calculation algorithm in a treatment planning system for volumetric modulated arc therapy (VMAT) and sliding window (SW) techniques using a two-dimensional diode array. METHODS: The VMAT quality assurance(QA) was implemented with a diode array using multiple partial arcs that divided from a VMAT plan; each partial arc has the same segments and the original monitor units. Arc angles were less than ± 30°. Multiple arcs delivered through consecutive and repetitive gantry operating clockwise and counterclockwise...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048149/su-g-brb-16-vulnerabilities-in-the-gamma-metric
#20
B Neal, J Siebers
PURPOSE: To explore vulnerabilities in the gamma index metric that undermine its wide use as a radiation therapy quality assurance tool. METHODS: 2D test field pairs (images) are created specifically to achieve high gamma passing rates, but to also include gross errors by exploiting the distance-to-agreement and percent-passing components of the metric. The first set has no requirement of clinical practicality, but is intended to expose vulnerabilities. The second set exposes clinically realistic vulnerabilities...
June 2016: Medical Physics
keyword
keyword
33360
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"