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https://www.readbyqxmd.com/read/29235120/two-dimensional-antiscatter-grid-a-novel-scatter-rejection-device-for-cone-beam-computed-tomography
#1
Timur Alexeev, Brian Kavanagh, Moyed Miften, Cem Altunbas
PURPOSE: Scattered radiation remains to be a major cause of image quality degradation in Flat Panel Detector (FPD) based Cone-beam computed tomography (CBCT). We have been investigating a novel two dimensional antiscatter grid (2D-ASG) concept to reduce scatter intensity, and hence improve CBCT image quality. We present the first CBCT imaging experiments performed with the 2D-ASG prototype, and demonstrate its efficacy in improving CBCT image quality. METHODS: A 2D-ASG prototype with septa focused to x-ray source was additively manufactured from tungsten and mounted on a Varian TrueBeam CBCT system...
December 12, 2017: Medical Physics
https://www.readbyqxmd.com/read/29210056/utility-of-a-precision-medicine-test-in-elderly-adults-with-symptoms-suggestive-of-coronary-artery-disease
#2
Joseph A Ladapo, Matthew J Budoff, David Sharp, Jane Z Kuo, Lin Huang, Bruce Maniet, Lee Herman, Mark Monane
BACKGROUND: Diagnosing obstructive coronary artery disease (CAD) is challenging in elderly adults, and current diagnostic approaches for CAD expose these individuals to risks from contrast dye and invasive procedures. DESIGN: A Registry to Evaluate Patterns of Care Associated with the Use of Corus CAD in Real World Clinical Care Settings (PRESET; NCT01677156), pragmatic clinical trial. SETTING: Community, 21 primary care practices. PARTICIPANTS: Of 566 stable, nonacute outpatients presenting with symptoms suggestive of obstructive CAD, the 176 who were aged 65 and older (median age 70, 61% female) were the current study participants...
December 6, 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/29191455/asge-endovators-summit-defining-the-role-and-value-of-endoscopic-therapies-in-obesity-management
#3
EDITORIAL
(no author information available yet)
No abstract text is available yet for this article.
November 27, 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29139082/asge-endovators-summit-defining-the-role-and-value-of-endoscopic-therapies-in-obesity-management
#4
Marvin Ryou, Kenneth R McQuaid, Christopher C Thompson, Steven Edmundowic, Klaus Mergener
No abstract text is available yet for this article.
November 14, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/29139029/asge-endovators-summit-defining-the-role-and-value-of-endoscopic-therapies-in-obesity-management
#5
Marvin Ryou, Kenneth R McQuaid, Christopher C Thompson, Steven Edmundowicz, Klaus Mergener
No abstract text is available yet for this article.
November 14, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/29138927/asge-endovators-summit-defining-the-role-and-value-of-endoscopic-therapies-in-obesity-management
#6
Marvin Ryou, Kenneth R McQuaid, Christopher C Thompson, Steven Edmundowicz, Klaus Mergener
No abstract text is available yet for this article.
November 14, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/29118564/sex-related-differences-in-predicting-choledocholithiasis-using-current-american-society-of-gastrointestinal-endoscopy-risk-criteria
#7
Ankit Chhoda, Deepanshu Jain, Shashideep Singhal
Background: American Society of Gastrointestinal Endoscopy (ASGE) criteria is widely used to predict probability of choledocholithiasis among patients with symptomatic gallstone disease but does not take sex into consideration. Methods: The cohort study included patients who underwent either endoscopic retrograde cholangiopancreatography or intraoperative cholangiography for suspected choledocholithiasis at our medical center. Clinical, laboratory and radiological data were collected for each patient and used to stratify them based on the ASGE risk criteria for choledocholithiasis...
2017: Annals of Gastroenterology: Quarterly Publication of the Hellenic Society of Gastroenterology
https://www.readbyqxmd.com/read/29092590/speech-quality-and-stable-gain-trade-offs-in-adaptive-feedback-cancellation-for-hearing-aids
#8
Ching-Hua Lee, James M Kates, Bhaskar D Rao, Harinath Garudadri
This paper addresses trade-offs in adaptive feedback cancellation (AFC) for hearing aids. Aggressive AFC for improved added stable gain (ASG) reduces speech quality. In this paper, the hearing-aid speech quality index (HASQI) is used to investigate AFC performance before the system becomes unstable. It is demonstrated that for a desired speech quality, multiple AFC algorithms can be evaluated for their ASG and computational efficiency. An example is presented with HASQI = 0.8, baseline AFC, and two advanced approaches...
October 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/29054276/endoscopic-anti-reflux-devices-with-videos
#9
Nirav Thosani, Adam Goodman, Michael Manfredi, Udayakumar Navaneethan, Mansour A Parsi, Zachary L Smith, Shelby A Sullivan, Subhas Banerjee, John T Maple
No abstract text is available yet for this article.
October 18, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/29047755/common-mode-noise-reduction-in-an-atomic-spin-gyroscope-using-optical-differential-detection
#10
Lihong Duan, Wei Quan, Liwei Jiang, Wenfeng Fan, Ming Ding, Zhaohui Hu, Jiancheng Fang
Optical rotation of linearly polarized light is used to measure atom spin precession in an atomic spin gyroscope (ASG). However, the common-mode noise in the polarization measurement seriously affects the performance of the sensitive ASG. Here we propose an optical differential detection method based on the photoelastic polarization modulation, which could effectively eliminate the light power fluctuation of the laser source and optical elements, while removing the polarization noise and the residual birefringence...
September 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/29031371/asge-endovators-summit-defining-the-role-and-value-of-endoscopic-therapies-in-obesity-management
#11
Marvin Ryou, Kenneth R McQuaid, Christopher C Thompson, Steven Edmundowicz, Klaus Mergener, Barham Abu Dayyeh, Caroline Apovian, Carol Burke, Bipan Chand, Anil Chandraker, Thomas Deas, William Dietz, Brian Dunkin, Opella Ernest, Douglas Faigel, Shawn Garber, Osama Hamdy, Lee Kaplan, Nitin Kumar, Robert Kushner, Michael C Larsen, Herbert Lerner, Glenn Littenberg, Christos Mantzoros, Samer Mattar, Rachel Moore, Mary Rinella, Richard Rothstein, Dean Schillinger, Bonnie Spring, Shelby Sullivan, Jeffrey Tice, John Vargo, Erik Wilson, Karen Woods, Natan Zundel
No abstract text is available yet for this article.
November 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/29030161/asge-endovators-summit-defining-the-role-and-value-of-endoscopic-therapies-in-obesity-management
#12
Marvin Ryou, Kenneth R McQuaid, Christopher C Thompson, Steven Edmundowicz, Klaus Mergener, Barham Abu Dayyeh, Caroline Apovian, Carol Burke, Bipan Chand, Anil Chandraker, Thomas Deas, William Dietz, Brian Dunkin, Opella Ernest, Douglas Faigel, Shawn Garber, Osama Hamdy, Lee Kaplan, Nitin Kumar, Robert Kushner, Michael C Larsen, Herbert Lerner, Glenn Littenberg, Christos Mantzoros, Samer Mattar, Rachel Moore, Mary Rinella, Richard Rothstein, Dean Schillinger, Bonnie Spring, Shelby Sullivan, Jeffrey Tice, John Vargo, Erik Wilson, Karen Woods, Natan Zundel
No abstract text is available yet for this article.
September 8, 2017: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/28987546/increase-in-female-faculty-in-asge-sponsored-programming-over-time
#13
Brintha K Enestvedt, Rebecca S DeVivo, Colleen M Schmitt, Audrey H Calderwood
BACKGROUND AND AIMS: Female representation in medicine is increasing across all levels of medical training yet women hold fewer senior leadership positions than men. National recognition, including participation as faculty in society-sponsored programs, is one component of academic advancement. The aim of this study was to characterize female representation among faculty in courses sponsored by the American Society for Gastrointestinal Endoscopy. (ASGE) METHODS: We performed a retrospective review of demographic data including faculty gender and role, year, and program type, from the ASGE database of its sponsored programs between 2009 and 2014...
October 4, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28984045/differentially-expressed-alternatively-spliced-genes-in-skeletal-muscle-from-cancer-patients-with-cachexia
#14
Ashok Narasimhan, Russell Greiner, Oliver F Bathe, Vickie Baracos, Sambasivarao Damaraju
BACKGROUND: Alternative splicing (AS) is a post-transcriptional gene regulatory mechanism that contributes to proteome diversity. Aberrant splicing mechanisms contribute to various cancers and muscle-related conditions such as Duchenne muscular dystrophy. However, dysregulation of AS in cancer cachexia (CC) remains unexplored. Our objectives were (i) to profile alternatively spliced genes (ASGs) on a genome-wide scale and (ii) to identify differentially expressed alternatively spliced genes (DASGs) associated with CC...
October 6, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/28978541/comparison-of-midupper-arm-circumference-and-weight-for-height-z-score-for-assessing-acute-malnutrition-in-bangladeshi-children-aged-6-60-mo-an-analytical-study
#15
Md Iqbal Hossain, Tahmeed Ahmed, Shams El Arifeen, Sk Masum Billah, Asg Faruque, M Munirul Islam, Alan A Jackson
Background: In clinical settings, wasting in childhood has primarily been assessed with the use of a weight-for-height z score (WHZ), and in community settings, it has been assessed via the midupper arm circumference (MUAC) with a cutoff <115 mm for severe wasting and <115-125 mm for moderate wasting. Our recent experience indicates that many wasted children were not identified when these cutoffs for MUAC were used.Objective: We determined the cutoffs for MUAC to detect wasting in Bangladeshi children aged 6-60 mo...
October 4, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28938959/rheumatoid-arthritis-complicates-noninvasive-whole-blood-gene-expression-testing-for-coronary-artery-disease
#16
Ryan Jessee, Erica Peart, Phil Beineke, Steven Rosenberg, James A Wingrove, William E Kraus, Kim M Huffman
BACKGROUND: Our objective was to evaluate an age- and sex-specific gene expression score (ASGES) previously validated to detect obstructive coronary artery disease (CAD) in patients with rheumatoid arthritis (RA). METHODS: We evaluated 20 pairs of nondiabetic coronary patients with and without RA, selected by matching on age, sex, race, body mass index, tobacco use, and number of diseased coronary vessels. Peripheral blood gene expression levels of 23 CAD-associated genes were measured, and a previously validated CAD risk score including age, sex, and gene expression levels (Corus CAD) was computed...
October 2017: American Heart Journal
https://www.readbyqxmd.com/read/28818507/optimizing-quality-of-endoscopy-in-inflammatory-bowel-disease-focus-on-surveillance-and-management-of-colorectal-dysplasia-using-interactive-image-and-video-based-teaching
#17
Tonya R Kaltenbach, Roy M Soetikno, Rebecca DeVivo, Loren A Laine, Alan Barkun, Kenneth R McQuaid
BACKGROUND & AIMS: Varying recommendations regarding the detection and management of dysplasia can lead to uncertainty and may have impeded the uptake of strategies that could improve surveillance in patients with inflammatory bowel disease (IBD). As such, an educational event was held to assist in disseminating the recently published Surveillance for Colorectal Endoscopic Neoplasia Detection and Management in Inflammatory Bowel Disease Patients: International Consensus Recommendations (SCENIC)...
August 14, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28791325/survey-study-on-the-practice-patterns-in-the-endoscopic-management-of-malignant-distal-biliary-obstruction
#18
Dennis Yang, Yaseen B Perbtani, Qi An, Mitali Agarwal, Michael Riverso, Joydeep Chakraborty, Tony S Brar, Donevan Westerveld, Han Zhang, Shailendra S Chauhan, Christopher E Forsmark, Peter V Draganov
BACKGROUND AND STUDY AIM:  Endoscopic biliary drainage for malignant distal biliary obstruction (MDBO) is a common practice. Controversy persists with regard to its role in resectable MDBO, the optimal technical method and type of stent. The aim of this study was to evaluate practice patterns in the treatment of MDBO among endoscopists with varying levels of experience and practice backgrounds. METHODS:  Electronic survey distributed to members of the American Society for Gastrointestinal Endoscopy (ASGE)...
August 2017: Endoscopy International Open
https://www.readbyqxmd.com/read/28731990/-performance-of-asge-predictive-criteria-in-diagnosis-of-choledocholithiasis-in-the-edgardo-rebagliati-martins-hospital
#19
Harold Eduardo Benites Goñi, Fernando Vicente Palacios Salas, Jairo Luis Asencios Cusihuallpa, Rossmery Aguilar Morocco, Nasthya Solange Segovia Valle
BACKGROUND: In Peru, there are still no local studies designed for evaluating the performance of clinical guidelines designed to stratify patients according to probability of choledocholithiasis. OBJECTIVES: To evaluate the performance of predictive criteria proposed by the American Society for Gastrointestinal Endoscopy (ASGE) in diagnosis of choledocholithiasis. MATERIALS AND METHODS: A retrospective cohort study conducted in a hospital in Lima (Rebagliati hospital)...
April 2017: Revista de Gastroenterología del Perú: órgano Oficial de la Sociedad de Gastroenterología del Perú
https://www.readbyqxmd.com/read/28715771/a-flow-through-aqueous-standard-generation-system-for-thin-film-microextraction-investigations-of-uv-filters-and-biocides-partitioning-to-different-environmental-compartments
#20
Fardin Ahmadi, Chris Sparham, Janusz Pawliszyn
In this paper problems associated with preparation of aqueous standard of highly hydrophobic compounds such as partial precipitation, being lost on the surfaces, low solubility in water and limited sample volume for accurate determination of their distribution coefficients are addressed. The following work presents two approaches that utilize blade thin film microextraction (TFME) to investigate partitioning of UV filters and biocides to humic acid (dissolved organic carbon) and sediment. A steady-state concentration of target analytes in water was generated using a flow-through aqueous standard generation (ASG) system...
November 2017: Environmental Pollution
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