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https://www.readbyqxmd.com/read/28092637/non-invasive-classification-of-breast-microcalcifications-using-x-ray-coherent-scatter-computed-tomography
#1
Bahaa Ghammraoui, Lucretiu M Popescu
We investigate the use of energy dispersive x-ray coherent scatter computed tomography (ED-CSCT) as a non-invasive diagnostic method to differentiate between type I and type II breast calcifications. This approach is sensitive to the differences of composition and internal crystal structure of different types of microcalcifications. The study is carried out by simulating a CSCT system with a scanning pencil beam, considering a polychromatic x-ray source and an energy-resolving photon counting detector. In a first step, the multidimensional angle and energy distributed CSCT data is reduced to the projection-space distributions of only a few components, corresponding to the expected target composition: adipose, glandular tissue, weddellite (calcium oxalate) for type I calcifications, and hydroxyapatite for type II calcifications...
February 7, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28092609/horse-expert-an-aided-expert-system-for-diagnosing-horse-diseases
#2
H Qin, J Xiao, X Gao, H Wang
In contrast to the rapid development of the horse husbandry in China, the ability of horse veterinarians to diagnose diseases has not been improved and only a few domain experts have considerable expertise. At present, many expert systems have been developed for diseases diagnosis, but few for horse diseases diagnosis have been studied in depth. This paper presents the design and development of a computer-aided expert system for diagnosing horse diseases. We suggest an approach for diagnosis of horse diseases based on the analysis of diagnostic characteristics and the experiential knowledge of domain experts...
December 1, 2016: Polish Journal of Veterinary Sciences
https://www.readbyqxmd.com/read/28091865/improving-the-diagnostic-workup-of-hyponatremia-in-the-setting-of-kidney-disease-a-continuing-medical-education-cme-initiative
#3
Ladan Golestaneh, Joel Neugarten, William Southern, Faraj Kargoli, Amanda Raff
PURPOSE: Hyponatremia is a common electrolyte disorder and is associated with mortality. We examined the frequency of appropriate testing in response to an episode of inpatient hyponatremia in a large urban hospital to better inform our educational intervention. We then evaluated the impact of a live CME activity with a focus on CKD- and ESRD-associated hyponatremia physiology, on diagnostic practices of audience hospitalist attendings. METHODS: We performed a retrospective database analysis of all patients admitted to Montefiore Medical Center in 2014 to examine the performance of hospital staff in response to hyponatremia across all CKD stages...
January 13, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28091837/peritoneal-fluid-of-low-ct-hounsfield-units-as-a-screening-criterion-for-traumatic-bowel-perforation
#4
Yon-Cheong Wong, Li-Jen Wang, Cheng-Hsien Wu, Huan-Wu Chen, Being-Chuan Lin, Yu-Pao Hsu
PURPOSE: To investigate whether peritoneal fluid of low CT Hounsfield units is an important screening criterion for traumatic bowel perforation. MATERIALS AND METHODS: We performed a retrospective study on two cohorts of blunt trauma patients who had peritoneal fluid. Intravenous and oral contrast was used for the first cohort (61 patients) as opposed to intravenous contrast only for the second cohort (60 patients). We compared the CT Hounsfield units of peritoneal fluid with bowel perforation...
January 13, 2017: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/28090793/development-and-validation-of-a-predictor-of-insufficient-enhancement-during-the-hepatobiliary-phase-of-gd-eob-dtpa-enhanced-magnetic-resonance-imaging
#5
Enming Cui, Wansheng Long, Liangping Luo, Maoqing Hu, Liebin Huang, Xiangmeng Chen
Background Insufficient enhancement of liver parenchyma negatively affects diagnostic accuracy of Gd-EOB-DTPA-enhanced magnetic resonance imaging (MRI). Currently, there is no reliable method for predicting insufficient enhancement during the hepatobiliary phase (HBP) in Gd-EOB-DTPA-enhanced MRI. Purpose To develop a predictor for insufficient enhancement of liver parenchyma during HBP in Gd-EOB-DTPA-enhanced MRI. Material and Methods In order to formulate a HBP enhancement test (HBP-ET), clinical factors associated with relative enhancement ratio (RER) of liver parenchyma were retrospectively determined from the datasets of 156 patients (Development group) who underwent Gd-EOB-DTPA-enhanced MRI between November 2012 and May 2015...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28090288/expression-profiling-elucidates-a-molecular-gene-signature-for-pulmonary-hypertension-in-sarcoidosis
#6
Sunit Singla, Tong Zhou, Kamran Javaid, Taimur Abbasi, Nancy Casanova, Wei Zhang, Shwu-Fan Ma, Michael S Wade, Imre Noth, Nadera J Sweiss, Joe G N Garcia, Roberto F Machado
Pulmonary hypertension (PH), when it complicates sarcoidosis, carries a poor prognosis, in part because it is difficult to detect early in patients with worsening respiratory symptoms. Pathogenesis of sarcoidosis occurs via incompletely characterized mechanisms that are distinct from the mechanisms of pulmonary vascular remodeling well known to occur in conjunction with other chronic lung diseases. To address the need for a biomarker to aid in early detection as well as the gap in knowledge regarding the mechanisms of PH in sarcoidosis, we used genome-wide peripheral blood gene expression analysis and identified an 18-gene signature capable of distinguishing sarcoidosis patients with PH (n = 8), sarcoidosis patients without PH (n = 17), and healthy controls (n = 45)...
December 2016: Pulmonary Circulation
https://www.readbyqxmd.com/read/28089815/do-patients-hospitalized-with-copd-have-airflow-obstruction
#7
Huimin Wu, Robert A Wise, Ann E Medinger
BACKGROUND: Guidelines recommend the confirmation of a COPD diagnosis with spirometry. ICD-9-CM diagnostic codes are used frequently to identify patients with COPD for administrative purposes. However, coding the diagnosis of COPD does not require spirometric confirmation. The purpose of this study was to determine how often the discharge diagnoses of COPD is supported by spirometric measurements in the VA health system. METHODS: We reviewed records of patients hospitalized for COPD in a VA teaching hospital between 2005 and 2015...
January 13, 2017: Chest
https://www.readbyqxmd.com/read/28089658/utility-of-body-mass-index-waist-to-height-ratio-and-cardiorespiratory-fitness-thresholds-for-identifying-cardiometabolic-risk-in-10-4-17-6-year-old-children
#8
Duncan S Buchan, Julien S Baker
OBJECTIVE: To examine the utility of Body Mass Index (BMI), Waist-to-Height-Ratio (WHtR) and cardiorespiratory fitness thresholds to identify cardiometabolic risk in youth. METHODS: Cross-sectional cardiometabolic risk factor variables on 534 children aged 10.4-17.6 years of age (52% boys) from the United Kingdom were used. Binary logistic regression and receiver operating characteristic curves were used to examine the utility of established age and gender specific thresholds for BMI, WHtR and cardiorespiratory fitness to identify individuals with increased cardiometabolic risk (increased clustered triglycerides, HDL-cholesterol, systolic blood pressure and glucose)...
January 12, 2017: Obesity Research & Clinical Practice
https://www.readbyqxmd.com/read/28089477/bioimpedance-and-fluid-status-in-children-and-adolescents-treated-with-dialysis
#9
Gregorio P Milani, Jaap W Groothoff, Federica A Vianello, Emilio F Fossali, Fabio Paglialonga, Alberto Edefonti, Carlo Agostoni, Dario Consonni, Dewi van Harskamp, Johannes B van Goudoever, Henk Schierbeek, Michiel J S Oosterveld
BACKGROUND: Assessment of hydration status in patients with chronic kidney failure treated by dialysis is crucial for clinical management decisions. Dilution techniques are considered the gold standard for measurement of body fluid volumes, but they are unfit for day-to-day care. Multifrequency bioimpedance has been shown to be of help in clinical practice in adults and its use in children and adolescents has been advocated. We investigated whether application of multifrequency bioimpedance is appropriate for total-body water (TBW) and extracellular water (ECW) measurement in children and adolescents on dialysis therapy...
January 12, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28089433/derivation-and-validation-of-a-scoring-system-for-predicting-nonalcoholic-steatohepatitis-in-taiwanese-patients-with-severe-obesity
#10
Chi-Ming Tai, Ming-Lung Yu, Hung-Pin Tu, Chih-Kun Huang, Jau-Chung Hwang, Wan-Long Chuang
BACKGROUND: Nonalcoholic steatohepatitis (NASH) is common in severely obese Asians and may progress to advanced liver disease. Although invasive, liver biopsy is the gold standard for NASH diagnosis. Scoring systems for predicting NASH in obese Asians are scarce. OBJECTIVES: To develop and validate a scoring system to predict NASH in Taiwanese patients with severe obesity. SETTING: University hospital, Taiwan. METHODS: Preoperative clinical and laboratory data were obtained from 180 severely obese patients who underwent bariatric surgery...
December 7, 2016: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/28089245/diagnostic-accuracy-of-postmortem-imaging-vs-autopsy-a-systematic-review
#11
REVIEW
Anders Eriksson, Torfinn Gustafsson, Malin Höistad, Monica Hultcrantz, Stella Jacobson, Ingegerd Mejare, Anders Persson
Background Postmortem imaging has been used for more than a century as a complement to medico-legal autopsies. The technique has also emerged as a possible alternative to compensate for the continuous decline in the number of clinical autopsies. To evaluate the diagnostic accuracy of postmortem imaging for various types of findings, we performed this systematic literature review. Data sources The literature search was performed in the databases PubMed, Embase and Cochrane Library through January 7, 2015. Relevant publications were assessed for risk of bias using the QUADAS tool and were classified as low, moderate or high risk of bias according to pre-defined criteria...
December 7, 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/28088937/traumatic-cardiac-injury-experience-from-a-level-1-trauma-centre
#12
Biplab Mishra, Amit Gupta, Sushma Sagar, Maneesh Singhal, Subodh Kumar
PURPOSE: Traumatic cardiac injury (TCI) is a challenge for trauma surgeons as it provides a short thera- peutic window and the management is often dictated by the underlying mechanism and hemodynamic status. The current study is to evaluate the factors influencing the outcome of TCI. METHODS: Prospectively maintained database of TCI cases admitted at a Level-1 trauma center from July 2008 to June 2013 was retrospectively analyzed. Hospital records were reviewed and statistical analysis was performed using the SPSS version 15...
December 1, 2016: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/28088797/automated-interpretation-of-pulmonary-function-tests-in-adults-with-respiratory-complaints
#13
Marko Topalovic, Stefan Laval, Jean-Marie Aerts, Thierry Troosters, Marc Decramer, Wim Janssens
BACKGROUND: The use of pulmonary function tests is primarily based on expert opinion and international guidelines. Current interpretation strategies are using predefined cutoffs for the description of a typical pattern. OBJECTIVES: We aimed to explore the predicted disease outcome based on the American Thoracic Society/European Respiratory Society (ATS/ERS) interpreting strategy. Subsequently, we investigated whether an unbiased machine learning framework integrating lung function with clinical variables may provide alternative decision trees resulting in a more accurate diagnosis...
January 12, 2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28088775/diagnostic-accuracy-of-glycated-hemoglobin-for-post-transplantation-diabetes-mellitus-after-kidney-transplantation-systematic-review-and-meta-analysis
#14
Ana Laura Pimentel, Gabriela Cavagnolli, Joíza Lins Camargo
BACKGROUND: Early detection of post-transplantation diabetes mellitus (PTDM) allows prompt clinical and pharmacological interventions, reducing the chance of adverse outcomes. We conducted a systematic review and meta-analysis to determine the overall diagnostic accuracy of glycated hemoglobin (HbA1c) for the diagnosis of renal PTDM. METHODS: We searched MEDLINE, Embase and SCOPUS up to June 2016. Studies that included adults without previous diabetes were selected if they reported an oral glucose tolerance test as a reference test, HbA1c levels measured by standardized methods and data necessary for drawing 2 × 2 tables...
January 14, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28088771/do-we-still-need-cross-sectional-studies-in-nephrology-yes-we-do
#15
Giovanni Tripepi, Graziella D'Arrigo, Kitty J Jager, Vianda S Stel, Friedo W Dekker, Carmine Zoccali
Cross-sectional studies represent the second line of evidence (after case reports) in the ladder of evidence aimed at defining disease aetiology. This study design is used to generate hypotheses about the determinants of a given disease but also to investigate the accuracy of diagnostic tests and to assess the burden of a given disease in a population. The intrinsic limitation of cross-sectional studies, when applied to generate aetiological hypotheses, is that both the exposure under investigation and the disease of interest are measured at the same point in time...
January 14, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28088474/diagnostic-accuracy-of-fractional-exhaled-nitric-oxide-in-predicting-cough-variant-asthma-and-eosinophilic-bronchitis-in-adult-patients-with-chronic-cough-a-systematic-review-and-meta-analysis
#16
Woo-Jung Song, Hyun Jung Kim, Ji-Su Shim, Ha-Kyeong Won, Sung-Yoon Kang, Kyoung-Hee Sohn, Byung-Keun Kim, Eun-Jung Jo, Min-Hye Kim, Sang-Heon Kim, Heung-Woo Park, Sun-Sin Kim, Yoon-Seok Chang, Alyn H Morice, Byung-Jae Lee, Sang-Heon Cho
BACKGROUND: Individual studies suggested the utility of fractional exhaled nitric oxide (FeNO) in detecting cough variant asthma (CVA) and eosinophilic bronchitis (EB) in chronic cough patients. OBJECTIVE: To obtain summary estimates of diagnostic test accuracy of FeNO in predicting CVA and/or EB in adult patients with chronic cough METHODS: Electronic databases were searched for studies published until January 2016, without language restriction. Cross-sectional studies which reported the diagnostic accuracy of FeNO for detecting CVA or EB were included...
January 11, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28088248/the-spectrum-of-rheumatic-in-patient-diagnoses-at-a-pediatric-hospital-in-kenya
#17
Angela Migowa, Inés Colmegna, Carol Hitchon, Eugene Were, Evelyn Ng'ang'a, Thomas Ngwiri, John Wachira, Sasha Bernatsky, Rosie Scuccimarri
BACKGROUND: Pediatric rheumatic diseases are chronic illnesses that can cause considerable disease burden to children and their families. There is limited epidemiologic data on these diseases in East Africa. The aim of this study was to assess the spectrum of pediatric rheumatic diagnoses in an in-patient setting and determine the accuracy of ICD-10 codes in identifying these conditions. METHODS: Medical records from Gertrude's Children's Hospital in Kenya were reviewed for patients diagnosed with "diseases of the musculoskeletal system and connective tissue" as per ICD-10 diagnostic codes assigned at discharge between January and December 2011...
January 14, 2017: Pediatric Rheumatology Online Journal
https://www.readbyqxmd.com/read/28088009/cardiac-output-and-systemic-vascular-resistance-clinical-assessment-compared-with-a-noninvasive-objective-measurement-in-children-with-shock
#18
Asma Razavi, Christopher J L Newth, Robinder G Khemani, Fernando Beltramo, Patrick A Ross
PURPOSE: To evaluate physician assessment of cardiac output and systemic vascular resistance in patients with shock compared with an ultrasonic cardiac output monitor (USCOM). To explore potential changes in therapy decisions if USCOM data were available using physician intervention answers. STUDY DESIGN: Double-blinded, prospective, observational study in a tertiary hospital pediatric intensive care unit. Forty children (<18years) admitted with shock, requiring ongoing volume resuscitation or inotropic support...
December 28, 2016: Journal of Critical Care
https://www.readbyqxmd.com/read/28087552/screening-for-atrial-fibrillation-using-economical-and-accurate-technology-safety-a-pilot-study
#19
Mark Lown, Arthur Yue, George Lewith, Paul Little, Mike Moore
INTRODUCTION: Atrial fibrillation (AF) is a cause of stroke and a marker of atherosclerosis and of all patients with stroke, around 17% have AF. The screening and treatment of AF could prevent about 12% of all strokes. Several relatively low-cost devices with good accuracy now exist which can detect AF including WatchBP and AliveCor. However, they can only measure the ECG or pulse over short time periods. Inexpensive devices such as heart rate monitors, which are widely available, can measure heart rate for prolonged periods and may have potential in screening for AF...
January 13, 2017: BMJ Open
https://www.readbyqxmd.com/read/28087402/accuracy-is-in-the-eyes-of-the-pathologist-the-visual-interpretive-process-and-diagnostic-accuracy-with-digital-whole-slide-images
#20
Tad T Brunyé, Ezgi Mercan, Donald L Weaver, Joann G Elmore
Digital whole slide imaging is an increasingly common medium in pathology, with application to education, telemedicine, and rendering second opinions. It has also made it possible to use eye tracking devices to explore the dynamic visual inspection and interpretation of histopathological features of tissue while pathologists review cases. Using whole slide images, the present study examined how a pathologist's diagnosis is influenced by fixed case-level factors, their prior clinical experience, and their patterns of visual inspection...
January 10, 2017: Journal of Biomedical Informatics
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