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https://www.readbyqxmd.com/read/28647541/response-tailored-protocol-versus-the-fixed-12weeks-of-dual-sofosbuvir-daclatasvir-treatment-in-egyptian-patients-with-chronic-hepatitis-c-genotype-4-infection-a-randomized-open-label-non-inferiority-trial
#1
Mostafa Yakoot, Alaa M Abdo, Siham Abdel-Rehim, Sherine Helmy
BACKGROUND: The most recent European Association for the Study of the Liver (EASL) 2016 Guidelines on treatment of hepatitis C (HCV), allowed for shortening the course of treatment for some subsets of patients with sofosbuvir/ledipasvir and with grazoprevir/elbasvir based on cutoff baseline HCV RNA values. We hypothesized that it would be prudent to also consider an objectively assuring very rapid, on-treatment, virologic response to therapy at week 2 (vRVR) before taking the decision of shortening the treatment duration...
May 17, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28647400/intraoperative-registered-ultrasound-and-fluoroscopy-iruf-for-dose-calculation-during-prostate-brachytherapy-improved-accuracy-compared-to-standard-ultrasound-based-dosimetry
#2
Junghoon Lee, Omar Y Mian, Yi Le, Hee Joon Bae, E Clif Burdette, Theodore L DeWeese, Jerry L Prince, Daniel Y Song
BACKGROUND AND PURPOSE: Intraoperative transrectal ultrasound dosimetry during low-dose-rate prostate brachytherapy is imprecise due to sonographic distortion caused by seed echoes and needle tracks that obscure seed positions or create false signals as well as traumatic edema. Here we report the results of a pilot study comparing a combined ultrasound and fluoroscopy-based seed localization method (iRUF) to standard ultrasound-based dosimetry (USD). MATERIAL AND METHODS: Eighty patients undergoing permanent Pd-103 seed implantation for prostate cancer were prospectively enrolled...
June 21, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28647393/the-effect-and-use-of-milestones-in-the-assessment-of-neurological-surgery-residents-and-residency-programs
#3
Lisa N Conforti, Nicholas A Yaghmour, Stanley J Hamstra, Eric S Holmboe, Benjamin Kennedy, Jesse J Liu, Heidi Waldo, Nathan R Selden
OBJECTIVES: The purpose of this study was to determine the effect of the Accreditation Council for Graduate Medical Education Milestones on the assessment of neurological surgery residents. The authors sought to determine the feasibility, acceptability, and utility of this new framework in making judgments of progressive competence, its implementation within programs, and the influence on curricula. Residents were also surveyed to elicit the effect of Milestones on their educational experience and professional development...
June 21, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28647303/the-predictors-of-metabolic-syndrome-based-on-walker-health-promoting-lifestyle-in-iran-2016
#4
REVIEW
Maryam Mohammadi, Ali Ramezankhani, Shabnam Mohammadi, Shakiba Zahed, Farahnaz Khabiri, Soheila Khodakarim, Mohsen Roshani, Majid Ghayur
BACKGROUND: Understanding the metabolic syndrome has been the center of attention in recent years as a major risk factor of many diseases. Given the rising incidence of this disease and as the patient can compete against this disease with choosing healthy lifestyle, in the present study, we investigated the predictors of metabolic syndrome, based on Walker's health-promoting lifestyle in two large cities in Iran, in 2016. METHODS: This cross-sectional study used two-stage cluster sampling to select 1128 patients, among patients who referred to health centers in Isfahan and Yazd...
May 17, 2017: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/28647287/microwave-thermal-ablation-effects-of-tissue-properties-variations-on-predictive-models-for-treatment-planning
#5
Vanni Lopresto, Rosanna Pinto, Laura Farina, Marta Cavagnaro
Microwave thermal ablation (MTA) therapy for cancer treatments relies on the absorption of electromagnetic energy at microwave frequencies to induce a very high and localized temperature increase, which causes an irreversible thermal damage in the target zone. Treatment planning in MTA is based on experimental observations of ablation zones in ex vivo tissue, while predicting the treatment outcomes could be greatly improved by reliable numerical models. In this work, a fully dynamical simulation model is exploited to look at effects of temperature-dependent variations in the dielectric and thermal properties of the targeted tissue on the prediction of the temperature increase and the extension of the thermally coagulated zone...
June 21, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28646860/effect-of-exercising-at-minimum-recommendations-of-the-multiple-sclerosis-exercise-guideline-combined-with-structured-education-or-attention-control-education-secondary-results-of-the-step-it-up-randomised-controlled-trial
#6
Susan Coote, Marcin Uszynski, Matthew P Herring, Sara Hayes, Carl Scarrott, John Newell, Stephen Gallagher, Aidan Larkin, Robert W Motl
BACKGROUND: Recent exercise guidelines for people with multiple sclerosis (MS) recommend a minimum of 30 min moderate intensity aerobic exercise and resistance exercise twice per week. This trial compared the secondary outcomes of a combined 10-week guideline based intervention and a Social Cognitive Theory (SCT) education programme with the same exercise intervention involving an attention control education. METHODS: Physically inactive people with MS, scoring 0-3 on Patient Determined Disease Steps Scale, with no MS relapse or change in MS medication, were randomised to 10-week exercise plus SCT education or exercise plus attention control education conditions...
June 24, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28646717/comprehending-the-multiple-values-of-green-infrastructure-valuing-nature-based-solutions-for-urban-water-management-from-multiple-perspectives
#7
T C Wild, J Henneberry, L Gill
The valuation of urban water management practices and associated nature-based solutions (NBS) is highly contested, and is becoming increasingly important to cities seeking to increase their resilience to climate change whilst at the same time facing budgetary pressures. Different conceptions of 'values' exist, each being accompanied by a set of potential measures ranging from calculative practices (closely linked to established market valuation techniques) - through to holistic assessments that seek to address wider concerns of sustainability...
June 21, 2017: Environmental Research
https://www.readbyqxmd.com/read/28645889/a-review-of-the-theoretical-basis-effects-and-cost-effectiveness-of-online-smoking-cessation-interventions-in-the-netherlands-a-mixed-methods-approach
#8
REVIEW
Kei Long Cheung, Ben Wijnen, Hein de Vries
BACKGROUND: Tobacco smoking is a worldwide public health problem. In 2015, 26.3% of the Dutch population aged 18 years and older smoked, 74.4% of them daily. More and more people have access to the Internet worldwide; approximately 94% of the Dutch population have online access. Internet-based smoking cessation interventions (online cessation interventions) provide an opportunity to tackle the scourge of tobacco. OBJECTIVE: The goal of this paper was to provide an overview of online cessation interventions in the Netherlands, while exploring their effectivity, cost effectiveness, and theoretical basis...
June 23, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28645838/sensitivity-analysis-and-uncertainty-quantification-in-pulmonary-drug-delivery-of-orally-inhaled-pharmaceuticals
#9
Jun Lu, Jinxiang Xi, Joseph E Langenderfer
In spite of widespread use of modeling tools in inhalation dosimetry, it remains difficult to quantify the output uncertainties when subjected to various sources of input variability. This study aimed to develop a computational model that can quantify the input sensitivity and output uncertainty in pulmonary drug delivery by coupling probabilistic analysis package NESSUS with ANSYS Fluent. An image-based mouth-lung model was used to simulate the transport and deposition of drug particles and variability in particle size, density, and inhalation speed were considered...
June 20, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28645692/clinical-implementation-of-combined-modulated-electron-and-photon-beams-with-conventional-mlc-for-accelerated-partial-breast-irradiation
#10
Carlos Míguez, Elisa Jiménez-Ortega, Bianey A Palma, Hector Miras, Ana Ureba, Rafael Arráns, Francisco Carrasco-Peña, Ana Illescas-Vacas, Antonio Leal
PURPOSE: To report the clinical implementation of a novel external beam radiotherapy technique for accelerated partial breast irradiation treatments based on combined electron and photon modulated beams radiotherapy (MERT+IMRT) with conventional MLC. MATERIALS AND METHODS: A group of patients was selected to test the viability of the technique. The prescribed dose was 38.5Gy, following a hypofractionated schema, and the structures were defined following the NSABP-B39/RTOG-0413 protocol...
June 20, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28645276/assessing-the-impact-of-health-research-on-health-policies-a-study-of-the-dodowa-health-research-centre-ghana
#11
Blanca Escribano-Ferrer, Jayne Webster, Margaret Gyapong
BACKGROUND: The importance of assessing research impact is increasingly recognised. Ghana has a long tradition of research dating from the 1970s. In the Ghana Health Service there are three health research centres under the Research and Development Division. Dodowa Health Research Centre (DHRC) is the youngest in the country dating from the 1990s. The objective of this study is to analyse the influence of the research conducted in DHRC on national and local health policies. METHODS: The study used the Research Impact Framework...
June 24, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28644742/new-legal-requirements-for-submission-of-product-information-to-poisons-centres-in-eu-member-states
#12
Ronald de Groot, Pieter Brekelmans, Herbert Desel, Irma de Vries
In the past eight years, the European Association of Poisons Centres and Clinical Toxicologists (EAPCCT) has been intensively involved in a European Commission led process to develop EU legislation on the information of hazardous products that companies have to notify to EU Poisons Centres (or equivalent "appointed bodies"). As a result of this process, the Commission adopted Regulation (EU) No 2017/542, amending the CLP Regulation by adding an Annex on harmonised product submission requirements. Harmonised mixture information requirements: Detailed and consistent information on the composition of the hazardous product will become available to EU Poisons Centres (PC)...
June 23, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28644151/ecg-based-4d-dose-reconstruction-of-cardiac-arrhythmia-ablation-with-carbon-ion-beams-application-in-a-porcine-model
#13
Daniel Richter, H Immo Lehmann, Anna Eichhorn, Anna M Constantinescu, Robert Kaderka, Matthias Prall, Patrick Lugenbiel, Mitsuru Takami, Dierk Thomas, Christoph Bert, Marco Durante, Douglas L Packer, Christian Graeff
Noninvasive ablation of cardiac arrhythmia by scanned particle radiotherapy is highly promising, but especially challenging due to cardiac and respiratory motion. Irradiations for catheter-free ablation in intact pigs were carried out at the GSI Helmholtz Center in Darmstadt using scanned carbon ions. Here, we present real-time electrocardiogram (ECG) data to estimate time-resolved (4D) delivered dose. For 11 animals, surface ECGs and temporal structure of beam delivery were acquired during irradiation. R waves were automatically detected from surface ECGs...
June 23, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28643753/dosimetric-characteristic-of-physical-wedge-versus-enhanced-dynamic-wedge-based-on-monte-carlo-simulations
#14
Seied Rabie Mahdavi, Ghazale Geraily, Ahmad Mostaar, Arman Zia, Golbarg Esmaili, Somayeh Farahani
AIM OF STUDY: Physical wedges (PWs) are widely used in radiotherapy to obtain tilted isodose curves, but they alter beam quality. Dynamic wedges (DWs) using moving collimator overcome this problem, but measuring their beam data is not simple. The main aim of this study is to obtain all dosimetric parameters of DWs produced by Varian 2100CD with Monte Carlo simulation and compare them to those from PWs. SUBJECTS AND METHODS: To simulate 6 MV photon beams equipped with PW and DW, BEAMnrc code was used...
April 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28643737/changes-in-pharyngeal-constrictor-volumes-during-head-and-neck-radiation-therapy-implications-for-dose-delivery
#15
Akila Kumarasiri, Chang Liu, Mona Kamal, Correen Fraser, Stephen Brown, Indrin J Chetty, Jinkoo Kim, Farzan Siddiqui
OBJECTIVE: The objective of this study was to evaluate the anatomical changes and associated dosimetric consequences to pharyngeal constrictor muscles (PCMs) that occur during head and neck (H and N) radiotherapy (RT). MATERIALS AND METHODS: A cohort of 13 oropharyngeal cancer patients with daily cone beam computed tomography (CBCT) was retrospectively studied. On every 5th CBCT image, PCM was manually delineated by a radiation oncologist. The anterior-posterior PCM thickness was measured at the midline level of C3 vertebral body...
April 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28643304/-strategy-and-technique-for-simultaneous-resection-of-rectal-cancer-and-liver-metastasis
#16
Chuangang Fu, Junyi Han
Rectal cancer with simultaneous liver metastasis is very common clinically. R0 surgical resection both for the original and metastatic tumor can achieve much better long-term oncological results. The operation types include traditional open procedures for both rectal cancer and liver metastatic resection; combination of laparoscopic resection of the rectal cancer and open procedure resection of the liver metastatic lesion; traditional laparoscopic-assisted rectal and liver metastatic tumor resection with small abdominal incision and total laparoscopic natural orifice specimen extraction surgery(NOSES) without abdominal incision...
June 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28643073/endoscopic-resection-of-giant-fibrovascular-esophageal-polyps
#17
Marc A Ward, Kristin W Beard, Ezra N Teitelbaum, Ahmed M Sharata, Christy M Dunst, Lee L Swanstrom, Kevin M Reavis
BACKGROUND: Giant fibrovascular esophageal polyps are rare benign intraluminal tumors that originate from the submucosa of the cervical esophagus [Owens et al. (JAMA 103: 838-842, 1994), Totten et al. (JAMA 25:606-622, 1953)]. Due to their indolent course, these tumors tend to reach enormous proportions before patients develop symptoms. Accurately diagnosing these tumors is difficult, as endoscopy may miss 25% of these lesions because these polyps exhibit normal intact esophageal mucosa [Levine et al...
June 22, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28643045/validation-of-a-mathematical-model-for-laser-induced-thermotherapy-in-liver-tissue
#18
F Hübner, C Leithäuser, B Bazrafshan, N Siedow, T J Vogl
The purpose of the study was to develop a simulation approach for laser-induced thermotherapy (LITT) that is based on mathematical models for radiation transport, heat transport, and tissue damage. The LITT ablation was applied to ex vivo pig liver tissue. Experiments were repeated with different laser powers, i.e., 22-34 W, and flow rates of the cooling water in the applicator system, i.e., 47-92 ml/min. During the procedure, the temperature was measured in the liver sample at different distances to the applicator as well as in the cooling circuit using a fiber optic thermometer...
June 22, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28642808/increasing-social-integration-for-college-students-with-autism-spectrum-disorder
#19
Kristen Ashbaugh, Robert Koegel, Lynn Koegel
Increasing numbers of individuals with Autism Spectrum Disorder (ASD) are entering postsecondary education; however, many report feeling lonely and isolated. These difficulties with socialization have been found to impact students' academic success, involvement within the university, and overall well being. Therefore, the purpose of this study was to assess, within the context of a multiple-baseline across participants design, whether a structured social planning intervention would increase social integration for college students with ASD...
April 2017: Behav Dev Bull
https://www.readbyqxmd.com/read/28642696/how-accumulated-real-life-stress-experience-and-cognitive-speed-interact-on-decision-making-processes
#20
Eva Friedel, Miriam Sebold, Sören Kuitunen-Paul, Stephan Nebe, Ilya M Veer, Ulrich S Zimmermann, Florian Schlagenhauf, Michael N Smolka, Michael Rapp, Henrik Walter, Andreas Heinz
Rationale: Advances in neurocomputational modeling suggest that valuation systems for goal-directed (deliberative) on one side, and habitual (automatic) decision-making on the other side may rely on distinct computational strategies for reinforcement learning, namely model-free vs. model-based learning. As a key theoretical difference, the model-based system strongly demands cognitive functions to plan actions prospectively based on an internal cognitive model of the environment, whereas valuation in the model-free system relies on rather simple learning rules from operant conditioning to retrospectively associate actions with their outcomes and is thus cognitively less demanding...
2017: Frontiers in Human Neuroscience
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