keyword
MENU ▼
Read by QxMD icon Read
search

Navigation

keyword
https://www.readbyqxmd.com/read/29782653/data-driven-gating-in-pet-influence-of-respiratory-signal-noise-on-motion-resolution
#1
Florian Büther, Iris Ernst, Lynn Johann Frohwein, Joost Pouw, Klaus Peter Schäfers, Lars Stegger
PURPOSE: Data-driven gating (DDG) approaches for positron emission tomography (PET) are interesting alternatives to conventional hardware-based gating methods. In DDG, the measured PET data themselves are utilized to calculate a respiratory signal that is subsequently used for gating purposes. The success of gating is then highly dependent on the statistical quality of the PET data. In this study we investigate how this quality determines signal noise and thus motion resolution in clinical PET scans using a center-of-mass-based (COM) DDG approach, specifically with regard to motion management of target structures in future radiotherapy planning applications...
May 21, 2018: Medical Physics
https://www.readbyqxmd.com/read/29782585/exploring-transformations-in-caribbean-indigenous-social-networks-through-visibility-studies-the-case-of-late-pre-colonial-landscapes-in-east-guadeloupe-french-west-indies
#2
Tom Brughmans, Maaike S de Waal, Corinne L Hofman, Ulrik Brandes
This paper presents a study of the visual properties of natural and Amerindian cultural landscapes in late pre-colonial East-Guadeloupe and of how these visual properties affected social interactions. Through a review of descriptive and formal visibility studies in Caribbean archaeology, it reveals that the ability of visual properties to affect past human behaviour is frequently evoked but the more complex of these hypotheses are rarely studied formally. To explore such complex hypotheses, the current study applies a range of techniques: total viewsheds, cumulative viewsheds, visual neighbourhood configurations and visibility networks...
2018: Journal of archaeological method and theory
https://www.readbyqxmd.com/read/29782256/-radiofrequency-pulmonary-artery-ablation-for-treatment-of-residual-pulmonary-hypertension-after-pulmonary-endarterectomy
#3
A M CHernyavskiy, A G Edemskiy, N V Novikova, A B Romanov, S N Artemenko, B A Rudenko, A R Tarkova
OBJECTIVE: to assess the safety and efficiency of radiofrequency pulmonary artery ablation for treatment of residual pulmonary hypertension after pulmonary endarterectomy. MATERIAL AND METHODS: Radiofrequency pulmonary artery denervation (PADN) was performed in 16 patients (10 men, mean age 39 years [26; 51]). Indication for PADN was mean pulmonary artery pressure (PAP) >25 mm Hg with absence of proximal pulmonary artery lesion according to computer tomography...
April 2018: Kardiologiia
https://www.readbyqxmd.com/read/29781923/going-beyond-clinical-care-to-reduce-health-care-spending-findings-from-the-j-chip-community-based-population-health-management-program-evaluation
#4
Shannon M E Murphy, Douglas E Hough, Martha L Sylvia, Melissa Sherry, Linda J Dunbar, Raymond Zollinger, Regina Richardson, Scott A Berkowitz, Kevin D Frick
BACKGROUND: Addressing both clinical and nonclinical determinants of health is essential for improving population health outcomes. In 2012, the Johns Hopkins Community Health Partnership (J-CHiP) implemented innovative population health management programs across acute and community environments. The community-based program involved multidisciplinary teams [ie, physicians, care managers (CM), health behavior specialists (HBS), community health workers, neighborhood navigators] and collaboration with community-based organizations to address social determinants...
May 17, 2018: Medical Care
https://www.readbyqxmd.com/read/29781587/patients-concerns-and-perceptions-regarding-biologic-therapies-in-ankylosing-spondylitis-insights-from-a-large-scale-survey-of-social-media-platforms
#5
Eldin Dzubur, Carine Khalil, Christopher V Almario, Benjamin Noah, Deeba Minhas, Mariko Ishimori, Corey Arnold, Yujin Park, Jonathan Kay, Michael H Weisman, Brennan M R Spiegel
OBJECTIVE: Few studies have examined ankylosing spondylitis (AS) patients' concerns and perceptions of biologic therapies outside of traditional surveys. In this study, we used social media data to examine AS patients' knowledge, attitudes, and beliefs regarding biologic therapies. METHODS: We collected posts from 601 social media sites made between 1/1/06-4/26/17. Each post mentioned both an AS keyword and a biologic. To explore themes within the collection in an unsupervised manner, a latent Dirichlet allocation topic model was fit to the dataset...
May 21, 2018: Arthritis Care & Research
https://www.readbyqxmd.com/read/29781470/neuro-oncology-nurse-navigation-developing-the-role-for-a-unique-patient-population
#6
Eleanor Miller
Navigation seeks to assess and address barriers that hinder a patient's access to care. With the success of the nurse navigation program at Penn Medicine's Abramson Cancer Center, leadership expanded navigation to neuro-oncology. The purpose of this article is to describe this population's unique needs and the effect of nurse navigation. Although the navigation role maintains integrity with regard to scope of practice, specialized navigation strategies are tailored to the neuro-oncology population and are different from other disease sites...
June 1, 2018: Clinical Journal of Oncology Nursing
https://www.readbyqxmd.com/read/29781454/nurse-navigator-core-competencies-an-update-to-reflect-the-evolution-of-the-role
#7
Kristen Baileys, Lori McMullen, Barbara Lubejko, Deborah Christensen, Pamela J Haylock, Traudi Rose, Jean Sellers, Dominique Srdanovic
BACKGROUND: The Oncology Nursing Society published Oncology Nurse Navigator (ONN) Core Competencies in 2013. However, a 2016 role delineation study (RDS) indicated that the role had evolved since their release. The RDS also indicated that a growing number of nurse navigators have extensive oncology and navigation experience. OBJECTIVES: The update to the competencies was undertaken to identify current responsibilities of ONNs and differentiate novice from expert practice...
June 1, 2018: Clinical Journal of Oncology Nursing
https://www.readbyqxmd.com/read/29781196/professionalised-intimacy-how-dementia-care-workers-navigate-between-domestic-intimacy-and-institutional-detachment
#8
Tobias Haeusermann
This article reports an ethnographic study of the handover routines in Germany's first dementia village, with a central focus on how care is balanced between domestic intimacy and institutional detachment. The term 'professionalised intimacy' is used for the vivid interplay between comfort and intimacy that renders the interaction between care workers and residents far more complex than previous theories have articulated. Because of the intimacy involved in community building, however, the promise of personalised care must clash with the bureaucratic structures of an official institution, potentially depriving the care workers of their public, respected identity in the process...
May 20, 2018: Sociology of Health & Illness
https://www.readbyqxmd.com/read/29781093/hippocampal-place-cell-encoding-of-sloping-terrain
#9
Blake S Porter, Robert Schmidt, David K Bilkey
Effective navigation relies on knowledge of one's environment. A challenge to effective navigation is accounting for the time and energy costs of routes. Irregular terrain in ecological environments poses a difficult navigational problem as organisms ought to avoid effortful slopes to minimize travel costs. Route planning and navigation have previously been shown to involve hippocampal place cells and their ability to encode and store information about an organism's environment. However, little is known about how place cells may encode the slope of space and associated energy costs as experiments are traditionally carried out in flat, horizontal environments...
May 21, 2018: Hippocampus
https://www.readbyqxmd.com/read/29779953/a-quality-assurance-device-for-measuring-afterloader-performance-and-transit-dose-for-nasobiliary-high-dose-rate-brachytherapy
#10
Christopher L Deufel, John P Mullins, Mark J Zakhary
PURPOSE: Nasobiliary high-dose-rate (HDR) brachytherapy has emerged as an effective tool to boost the radiation dose for patients with unresectable perihilar cholangiocarcinoma. This work describes a quality assurance (QA) tool for measuring the HDR afterloader's performance, including the transit dose, when the source wire travels through a tortuous nasobiliary catheter path. METHODS AND MATERIALS: The nasobiliary QA device was designed to mimic the anatomical path of a nasobiliary catheter, including the nasal, stomach, duodenum, and bile duct loops...
May 17, 2018: Brachytherapy
https://www.readbyqxmd.com/read/29779877/developmental-upregulation-of-ephrin-b1-silences-sema3c-neuropilin-1-signaling-during-post-crossing-navigation-of-corpus-callosum-axons
#11
Erik Mire, Mélanie Hocine, Elsa Bazellières, Thomas Jungas, Alice Davy, Sophie Chauvet, Fanny Mann
The corpus callosum is the largest commissure in the brain, whose main function is to ensure communication between homotopic regions of the cerebral cortex. During fetal development, corpus callosum axons (CCAs) grow toward and across the brain midline and then away on the contralateral hemisphere to their targets. A particular feature of this circuit, which raises a key developmental question, is that the outgoing trajectory of post-crossing CCAs is mirror-symmetric with the incoming trajectory of pre-crossing axons...
May 10, 2018: Current Biology: CB
https://www.readbyqxmd.com/read/29778345/health-literacy-and-uptake-of-anti-fracture-medications-in-a-population-based-sample-of-australian-women
#12
Sarah M Hosking, Sharon L Brennan-Olsen, Alison Beauchamp, Rachelle Buchbinder, Lana J Williams, Julie A Pasco
This study investigated associations between health literacy and use of anti-fracture medications in women with osteoporosis. Data were collected for women participating in the population-based Geelong Osteoporosis Study in Australia. Health literacy was ascertained using the Health Literacy Questionnaire (HLQ) and bone mineral density by dual x-ray absorptiometry. Self-reported current medications were classified using MIMS codes, with the category 'Agent affecting calcium and bone metabolism' indicating osteoporosis treatment...
May 9, 2018: Research in Social & Administrative Pharmacy: RSAP
https://www.readbyqxmd.com/read/29776994/first-demonstration-of-olfactory-learning-and-long-term-memory-in-honey-bee-queens
#13
Zhiwen Gong, Ken Tan, James C Nieh
As the primary source of colony reproduction, social insect queens play a vital role. However, the cognitive abilities of queens are not well understood, although queen learning and memory are essential in multiple species such as honey bees, in which virgin queens must leave the nest and then successful learn to navigate back over repeated nuptial flights. Honey bee queen learning has never been previously demonstrated. We therefore tested olfactory learning in queens and workers and examined the role of DNA methylation, which plays a key role in long term memory formation...
May 18, 2018: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29776973/challenges-in-end-of-life-dementia-care
#14
REVIEW
Anne A Fetherston, Grace Rowley, Charlotte L Allan
Dementia is a chronic, progressive disease that is now much more widely recognised and treated. Patients with dementia may require palliative care when they reach the end stage of their illness, or they may have mild-moderate cognitive symptoms comorbid with a life-limiting illness. The variety of presentations necessitates a highly individual approach to care planning, and patients should be encouraged to set their own goals and contribute to advanced care planning where possible. Assessment and management of distressing symptoms at the end of life can be greatly helped by a detailed knowledge of the individuals' prior wishes, interdisciplinary communication and recognition of changes in presentation that may result from new symptoms, for example, onset of pain, nutritional deficits and infection...
May 18, 2018: Evidence-based Mental Health
https://www.readbyqxmd.com/read/29776901/a-moderated-e-forum-for-adults-with-cardiovascular-disease-usability-study
#15
Rika Tanaka, Anita Banerjee, Jelena Surikova, Jacqueline Tracey, Ada Payne, Heather Ross, Robert Nolan
BACKGROUND: Self-care behaviors are commonly prescribed to manage both cardiovascular disease and hypertension to reduce modifiable risk factors and improve quality of life. Nevertheless, long-term adherence to self-care recommendations for cardiac patients has been problematic. In cardiac patients, moderated online forums have been found to be particularly useful in supporting maintenance of heart-healthy diet and fewer hospital visits. As such, we developed the e-Forum, a Web-based moderated forum designed to promote continued user engagement and long-term self-care adherence...
May 18, 2018: JMIR Human Factors
https://www.readbyqxmd.com/read/29775976/-are-there-any-differences-in-quality-or-complication-rate-in-total-knee-arthroplasty-after-establishing-a-centre-for-endoprosthesis
#16
Muzaffer Düzgünoglu, Wolfgang Hönle, Alexander Scheller, Alexander Schuh
BACKGROUND: The aim of the study is to show whether there are any changes in quality or incidence of complications in total knee arthroplasty (TKA) after establishing a centre for endoprothesis (EPZ). MATERIAL AND METHODS: We conducted a retrospective study comparing 100 TKAs one year before establishing an EPZ (Group I) with 100 TKAs one year after establishing an EPZ (group II). Data were collected by analysing our electronic documentation system, and the report of the rehabilitation hospital...
May 18, 2018: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/29775568/neonicotinoids-decrease-sucrose-responsiveness-of-honey-bees-at-first-contact
#17
Fabien J Démares, Christian W W Pirk, Susan W Nicolson, Hannelie Human
For two decades, neonicotinoid insecticides have been extensively used worldwide. Targeting neuronal receptors, they have deleterious effects on the behaviour and physiology of many of many beneficial as well as harmful insects. Bees are exposed to these insecticides in pollen and nectar while providing pollination services to agricultural crops, and neonicotinoids have been shown to impair navigation by bees and to decrease their foraging activity. We have previously reported the effect of dietary thiamethoxam on sucrose responsiveness of young worker bees...
May 15, 2018: Journal of Insect Physiology
https://www.readbyqxmd.com/read/29775483/ldha-gene-is-associated-with-pigeon-survivability-during-racing-competitions
#18
Sherif Ramadan, Takeshi Miyake, Junichi Yamaura, Miho Inoue-Murayama
Pigeon racing is a popular sport worldwide. Pigeons are under continuous selection to improve speed, spatial orientation, and endurance during long flights. However, numerous genetic and non-genetic factors affect survivability and homing ability, making such traits difficult for breeders to control. Polymorphisms in the lactate dehydrogenase A gene (LDHA) likely affects pigeon racing and homing abilities, due to its role in physical and mental performance. Additionally, the adenylate cyclase activating polypeptide 1 gene (ADCYAP1) has been associated with physiological and behavioral shifts that occur during avian migration...
2018: PloS One
https://www.readbyqxmd.com/read/29774229/web-pages-what-can-you-see-in-a-single-fixation
#19
Ali Jahanian, Shaiyan Keshvari, Ruth Rosenholtz
Research in human vision suggests that in a single fixation, humans can extract a significant amount of information from a natural scene, e.g. the semantic category, spatial layout, and object identities. This ability is useful, for example, for quickly determining location, navigating around obstacles, detecting threats, and guiding eye movements to gather more information. In this paper, we ask a new question: What can we see at a glance at a web page - an artificial yet complex "real world" stimulus? Is it possible to notice the type of website, or where the relevant elements are, with only a glimpse? We find that observers, fixating at the center of a web page shown for only 120 milliseconds, are well above chance at classifying the page into one of ten categories...
2018: Cognitive Research: Principles and Implications
https://www.readbyqxmd.com/read/29772949/lack-of-consensus-on-optimal-acetabular-cup-orientation-because-of-variation-in-assessment-methods-in-total-hip-arthroplasty-a-systematic-review
#20
Thom E Snijders, Koen Willemsen, Steven M van Gaalen, Rene M Castelein, Harrie Weinans, Arthur de Gast
INTRODUCTION: Dislocation is one of the main reasons for revision of total hip arthroplasty but dislocation rates have not changed in the past decades, compromising patients' well-being. Acetabular cup orientation plays a key role in implant stability and has been widely studied. This article investigates whether there is a consensus on optimal cup orientation, which is necessary when using a navigation system. METHODS: A systematic search of the literature in the PubMed, Embase and Cochrane databases was performed (March 2017) to identify articles that investigated the direct relationship between cup orientation and dislocation, including a thorough evaluation of postoperative cup orientation assessment methods...
May 1, 2018: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
keyword
keyword
28990
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"