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https://www.readbyqxmd.com/read/27910417/new-numerical-simulation-method-to-calibrate-the-regular-hexagonal-nai-tl-detector-with-radioactive-point-sources-situated-non-axial
#1
Ayman Hamzawy, Dimitar N Grozdanov, Mohamed S Badawi, Fuad A Aliyev, Abouzeid A Thabet, Mahmoud I Abbas, Ivan N Ruskov, Ahmed M El-Khatib, Yuri N Kopatch, Mona M Gouda
Scintillation crystals are usually used for detection of energetic photons at room temperature in high energy and nuclear physics research, non-destructive analysis of materials testing, safeguards, nuclear treaty verification, geological exploration, and medical imaging. Therefore, new designs and construction of radioactive beam facilities are coming on-line with these science brunches. A good number of researchers are investigating the efficiency of the γ-ray detectors to improve the models and techniques used in order to deal with the most pressing problems in physics research today...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910378/development-and-characterization-of-an-interferometer-for-calorimeter-based-absorbed-dose-to-water-measurements-in-a-medical-linear-accelerator
#2
Everardo Flores-Martinez, Martha J Malin, Larry A DeWerd
The quantity of relevance for external beam radiotherapy is absorbed dose to water (ADW). An interferometer was built, characterized, and tested to measure ADW within the dose range of interest for external beam radiotherapy using the temperature dependence of the refractive index of water. The interferometer was used to measure radiation-induced phase shifts of a laser beam passing through a (10 × 10 × 10) cm(3) water-filled glass phantom, irradiated with a 6 MV photon beam from a medical linear accelerator...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910177/comparison-of-pharmacy-based-and-diagnosis-based-comorbidity-measures-from-medical-administrative-data
#3
Sébastien Cortaredona, Elodie Pambrun, Hélène Verdoux, Pierre Verger
PURPOSE: Health status is sometimes quantified by chronic condition (CC) scores calculated from medical administrative data. We sought to modify two pharmacy-based comorbidity measures and compare their performance in predicting hospitalization and/or death. The reference was a diagnosis-based score. METHODS: One of the two measures applied an updated approach linking specific ATC codes of dispensed drugs to 22 CCs; the other used a list of 37 drug categories, without linking them to specific CCs...
December 2, 2016: Pharmacoepidemiology and Drug Safety
https://www.readbyqxmd.com/read/27909739/quantification-of-anticholinergic-and-sedative-drug-load-with-the-drug-burden-index-a-review-of-outcomes-and-methodological-quality-of-studies
#4
REVIEW
Hans Wouters, Helene van der Meer, Katja Taxis
PURPOSE: The Drug Burden Index (DBI) is a non-invasive method to quantify patients' anticholinergic and sedative drug burden from their prescriptions. This systematic review aimed to summarise the evidence on the associations between the DBI and clinical outcomes and methodological quality of studies. METHODS: A search in PubMed and Embase (search terms: 'drug', 'burden', and 'index') was performed and experts were contacted. We excluded publications that did not report empirical results or clinical outcomes...
December 1, 2016: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/27909622/the-effectiveness-of-biofeedback-therapy-in-children-with-monosymptomatic-enuresis-resistant-to-desmopressin-treatment
#5
Eyüp Burak Sancak, Alpaslan Akbaş, Ömer Kurt, Cabir Alan, Ahmet Reşit Ersay
OBJECTIVE: To investigate the effect of biofeedback therapy on children with desmopressin- resistant primary monosymptomatic enuresis (MsE). MATERIAL AND METHODS: The study comprised both retrospective and prospective sections. A total of 262 medical files of patients who were diagnosed as enuresis between November 2012 and January 2015 were retrospectively screened. Patients with neuropathic bladder, daytime voiding problems, anatomical pathology and enuresis-related diseases were excluded from the study...
December 2016: Turkish Journal of Urology
https://www.readbyqxmd.com/read/27908605/direct-health-care-costs-associated-with-obesity-in-chinese-population-in-2011
#6
Jingcheng Shi, Yao Wang, Wenwei Cheng, Hui Shao, Lizheng Shi
AIMS: Overweight and obesity are established major risk factors for type 2 diabetes, and major public health concerns in China. This study aims to assess the economic burden associated with overweight and obesity in the Chinese population ages 45 and older. METHODS: The Chinese Health and Retirement Longitudinal Study (CHARLS) in 2011 included 13,323 respondents of ages 45 and older living in 450 rural and urban communities across China. Demographic information, height, weight, direct health care costs for outpatient visits, hospitalization, and medications for self-care were extracted from the CHARLS database...
November 12, 2016: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/27908542/health-literacy-and-the-perception-of-risk-in-a-breast-cancer-family-history-clinic
#7
E J Rutherford, J Kelly, E A Lehane, V Livingstone, B Cotter, A Butt, M J O'Sullivan, F O Connell, H P Redmond, M A Corrigan
BACKGROUND: Informed consent is an essential component of medical practice, and especially so in procedural based specialties which entail varying degrees of risk. Breast cancer is one of the most common cancers in women, and as such is the focus of extensive research and significant media attention. Despite this, considerable misperception exists regarding the risk of developing breast cancer. AIMS: This study aims to examine the accuracy of risk perception of women attending a breast cancer family history clinic, and to explore the relationship between risk perception accuracy and health literacy...
November 28, 2016: Surgeon: Journal of the Royal Colleges of Surgeons of Edinburgh and Ireland
https://www.readbyqxmd.com/read/27908536/the-sensitivity-and-negative-predictive-value-of-a-pediatric-cervical-spine-clearance-algorithm-that-minimizes-computerized-tomography
#8
Mary Arbuthnot, David P Mooney
BACKGROUND: It is crucial to identify cervical spine injuries while minimizing ionizing radiation. This study analyzes the sensitivity and negative predictive value of a pediatric cervical spine clearance algorithm. METHODS: We performed a retrospective review of all children <21years old who were admitted following blunt trauma and underwent cervical spine clearance utilizing our institution's cervical spine clearance algorithm over a 10-year period. Age, gender, International Classification of Diseases 9th Edition diagnosis codes, presence or absence of cervical collar on arrival, Injury Severity Score, and type of cervical spine imaging obtained were extracted from the trauma registry and electronic medical record...
October 27, 2016: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/27908443/a-retrospective-validation-study-of-three-models-to-estimate-the-probability-of-malignancy-in-patients-with-small-pulmonary-nodules-from-a-tertiary-oncology-follow-up-centre
#9
A Talwar, N M Rahman, T Kadir, L C Pickup, F Gleeson
AIM: To estimate the probability of malignancy in small pulmonary nodules (PNs) based on clinical and radiological characteristics in a non-screening population that includes patients with a prior history of malignancy using three validated models. MATERIALS AND METHODS: Retrospective data on clinical and radiological characteristics was collected from the medical records of 702 patients (379 men, 323 women; range 19-94 years) with PNs ≤12 mm in diameter at a single centre...
November 28, 2016: Clinical Radiology
https://www.readbyqxmd.com/read/27908422/toenail-mercury-and-dyslipidemia-interaction-with-selenium
#10
Kyong Park, Eunmin Seo
BACKGROUND: Although compelling evidences from in vivo and in vitro studies exist, limited studies have examined the association between chronic mercury exposure and dyslipidemia. Particularly, data are sparse regarding the influence of selenium on this association of mercury with dyslipidemia in humans. PURPOSE: The purpose of the current study was to examine the associations of toenail mercury with dyslipidemia and its components, and to examine whether selenium in toenails modifies these associations...
January 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/27908162/an-efficient-method-to-determine-double-gaussian-fluence-parameters-in-the-eclipse%C3%A2-proton-pencil-beam-model
#11
Jiajian Shen, Wei Liu, Joshua Stoker, Xiaoning Ding, Aman Anand, Yanle Hu, Michael G Herman, Martin Bues
PURPOSE: To find an efficient method to configure the proton fluence for a commercial proton pencil beam scanning (PBS) treatment planning system (TPS). METHODS: An in-water dose kernel was developed to mimic the dose kernel of the pencil beam convolution superposition algorithm, which is part of the commercial proton beam therapy planning software, eclipse™ (Varian Medical Systems, Palo Alto, CA). The field size factor (FSF) was calculated based on the spot profile reconstructed by the in-house dose kernel...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27907210/assessing-potentially-inappropriate-prescribing-in-community-dwelling-older-patients-using-the-updated-version-of-stopp-start-criteria-a-comparison-of-profiles-and-prevalences-with-respect-to-the-original-version
#12
Encarnación Blanco-Reina, Maria Rosa García-Merino, Ricardo Ocaña-Riola, Lorena Aguilar-Cano, Jennifer Valdellós, Inmaculada Bellido-Estévez, Gabriel Ariza-Zafra
Emerging and changing evidence made it necessary to update STOPP-START criteria, and version 2 was published recently. In this study the objectives were to determine the prevalence of potentially inappropriate medication prescribing (PIM) in primary care using STOPP versions 1 (v1) and 2 (v2), as well as 2012 AGS Beers criteria, and analyze the factors associated with inappropriate prescribing according to STOPP/START v2. A cross-sectional study was carried out including community-dwelling older adults over the age of 65...
2016: PloS One
https://www.readbyqxmd.com/read/27907053/the-effect-of-diabetes-on-the-perioperative-outcomes-of-colorectal-cancer-surgery-patients
#13
Raymond Yap, Simon Wilkins, Margaret Staples, Karen Oliva, Paul J McMurrick
There are approximately 1.3 million patients in Australia with diabetes. Conflicting reports exist in the literature as to the effect of diabetes on the outcomes of colorectal cancer patients. We hypothesized that patients with diabetes would have poorer perioperative outcomes, and that diabetes was an independent risk factor for both 30-day mortality and perioperative morbidity. The aim of this study was to assess the impact of diabetes on perioperative colorectal cancer surgery outcomes, as compared to a diabetes-free reference population, and to examine factors affecting perioperative risk...
2016: PloS One
https://www.readbyqxmd.com/read/27906762/complications-in-postmastectomy-breast-reconstruction-one-year-outcomes-of-the-mastectomy-reconstruction-outcomes-consortium-mroc-study
#14
Edwin G Wilkins, Jennifer B Hamill, Hyungjin M Kim, John Y Kim, Richard J Greco, Ji Qi, Andrea L Pusic
OBJECTIVE: In postmastectomy reconstruction, procedure choice is heavily influenced by the relative risks of the various options. This study sought to evaluate complications in a large, multicenter patient population. SUMMARY OF BACKGROUND DATA: Previous studies have reported widely varying complication rates, but have been limited by their single center designs and inadequate controlling for confounders in their analyses. METHODS: Eleven sites enrolled women undergoing first time, immediate, or delayed reconstruction following mastectomy for cancer treatment or prophylaxis...
November 30, 2016: Annals of Surgery
https://www.readbyqxmd.com/read/27905974/dynamic-denominators-the-impact-of-seasonally-varying-population-numbers-on-disease-incidence-estimates
#15
Elisabeth Zu Erbach-Schoenberg, Victor A Alegana, Alessandro Sorichetta, Catherine Linard, Christoper Lourenço, Nick W Ruktanonchai, Bonita Graupe, Tomas J Bird, Carla Pezzulo, Amy Wesolowski, Andrew J Tatem
BACKGROUND: Reliable health metrics are crucial for accurately assessing disease burden and planning interventions. Many health indicators are measured through passive surveillance systems and are reliant on accurate estimates of denominators to transform case counts into incidence measures. These denominator estimates generally come from national censuses and use large area growth rates to estimate annual changes. Typically, they do not account for any seasonal fluctuations and thus assume a static denominator population...
October 12, 2016: Population Health Metrics
https://www.readbyqxmd.com/read/27905940/drug-poisoning-deaths-in-the-united-states-1999-2012-a-statistical-adjustment-analysis
#16
Christopher J Ruhm
BACKGROUND: Drug poisoning mortality in the US has risen rapidly but the drugs involved are frequently unspecified on death certificates. METHODS: Reported and adjusted proportions of specific drug types involved in fatal drug poisonings were calculated using vital statistics mortality data from 1999 to 2012. The adjusted proportions were those predicted to occur if at least one specific type of drug had been identified on the death certificates of all poisoning fatalities...
January 15, 2016: Population Health Metrics
https://www.readbyqxmd.com/read/27905939/causes-of-death-in-vanuatu
#17
Karen Carter, Viran Tovu, Jeffrey Tila Langati, Michael Buttsworth, Lester Dingley, Andy Calo, Griffith Harrison, Chalapati Rao, Alan D Lopez, Richard Taylor
BACKGROUND: The population of the Pacific Melanesian country of Vanuatu was 234,000 at the 2009 census. Apart from subsistence activities, economic activity includes tourism and agriculture. Current completeness of vital registration is considered too low to be usable for national statistics; mortality and life expectancy (LE) are derived from indirect demographic estimates from censuses/surveys. Some cause of death (CoD) data are available to provide information on major causes of premature death...
March 15, 2016: Population Health Metrics
https://www.readbyqxmd.com/read/27905934/estimation-of-country-specific-and-global-prevalence-of-male-circumcision
#18
Brian J Morris, Richard G Wamai, Esther B Henebeng, Aaron Ar Tobian, Jeffrey D Klausner, Joya Banerjee, Catherine A Hankins
BACKGROUND: Male circumcision (MC) status and genital infection risk are interlinked and MC is now part of HIV prevention programs worldwide. Current MC prevalence is not known for all countries globally. Our aim was to provide estimates for country-specific and global MC prevalence. METHODS: MC prevalence data were obtained by searches in PubMed, Demographic and Health Surveys, AIDS Indicator Surveys, and Behavioural Surveillance Surveys. Male age was ≥15 years in most surveys...
March 1, 2016: Population Health Metrics
https://www.readbyqxmd.com/read/27905814/medicare-and-medicaid-programs-cy-2017-home-health-prospective-payment-system-rate-update-home-health-value-based-purchasing-model-and-home-health-quality-reporting-requirements-final-rule
#19
(no author information available yet)
This final rule updates the Home Health Prospective Payment System (HH PPS) payment rates, including the national, standardized 60-day episode payment rates, the national per-visit rates, and the non-routine medical supply (NRS) conversion factor; effective for home health episodes of care ending on or after January 1, 2017. This rule also: Implements the last year of the 4-year phase-in of the rebasing adjustments to the HH PPS payment rates; updates the HH PPS case-mix weights using the most current, complete data available at the time of rulemaking; implements the 2nd-year of a 3-year phase-in of a reduction to the national, standardized 60-day episode payment to account for estimated case-mix growth unrelated to increases in patient acuity (that is, nominal case-mix growth) between CY 2012 and CY 2014; finalizes changes to the methodology used to calculate payments made under the HH PPS for high-cost "outlier" episodes of care; implements changes in payment for furnishing Negative Pressure Wound Therapy (NPWT) using a disposable device for patients under a home health plan of care; discusses our efforts to monitor the potential impacts of the rebasing adjustments; includes an update on subsequent research and analysis as a result of the findings from the home health study; and finalizes changes to the Home Health Value-Based Purchasing (HHVBP) Model, which was implemented on January 1, 2016; and updates to the Home Health Quality Reporting Program (HH QRP)...
November 3, 2016: Federal Register
https://www.readbyqxmd.com/read/27905673/single-versus-multiple-visits-for-endodontic-treatment-of-permanent-teeth
#20
REVIEW
Maddalena Manfredi, Lara Figini, Massimo Gagliani, Giovanni Lodi
BACKGROUND: Root canal treatment (RoCT), or endodontic treatment, is a common procedure in dentistry. The main indications for RoCT are irreversible pulpitis and necrosis of the dental pulp caused by carious processes, tooth cracks or chips, or dental trauma. Successful RoCT is characterised by an absence of symptoms (i.e. pain) and clinical signs (i.e. swelling and sinus tract) in teeth without radiographic evidence of periodontal involvement (i.e. normal periodontal ligament). The success of RoCT depends on a number of variables related to the preoperative condition of the tooth, as well as the endodontic procedures...
December 1, 2016: Cochrane Database of Systematic Reviews
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