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https://www.readbyqxmd.com/read/27914178/longitudinal-assessment-of-examiner-experience-and-the-accuracy-of-sonographic-fetal-weight-estimation-at-term
#1
Florian Faschingbauer, Jutta Heimrich, Eva Raabe, Sven Kehl, Michael Schneider, Matthias Schmid, Matthias W Beckmann, Tobias Hepp, Anika Lübke, Andreas Mayr, Ralf L Schild
OBJECTIVES: To evaluate the influence of examiner experience on the accuracy of sonographic weight estimation and to further analyze examiners' individual learning curves. METHODS: In this multicenter study, 4613 sonographic weight estimations performed by 18 examiners at the beginning of their ultrasound training were included. To assess the effect of experience on the accuracy of weight estimation, a multivariable mixed regression model analysis was performed, with percentage error and absolute percentage error as outcome variables and the examiner, the examiner's experience (number of examinations), birth weight, gestational age, scan-to-delivery interval, and maternal body mass index as fixed effects and the perinatal center as random intercepts...
December 3, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27910627/bayesian-tomography-and-integrated-data-analysis-in-fusion-diagnostics
#2
Dong Li, Y B Dong, Wei Deng, Z B Shi, B Z Fu, J M Gao, T B Wang, Yan Zhou, Yi Liu, Q W Yang, X R Duan
In this article, a Bayesian tomography method using non-stationary Gaussian process for a prior has been introduced. The Bayesian formalism allows quantities which bear uncertainty to be expressed in the probabilistic form so that the uncertainty of a final solution can be fully resolved from the confidence interval of a posterior probability. Moreover, a consistency check of that solution can be performed by checking whether the misfits between predicted and measured data are reasonably within an assumed data error...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910496/design-of-a-dispersion-interferometer-combined-with-a-polarimeter-to-increase-the-electron-density-measurement-reliability-on-iter
#3
T Akiyama, A Sirinelli, C Watts, P Shigin, G Vayakis, M Walsh
A dispersion interferometer is a reliable density measurement system and is being designed as a complementary density diagnostic on ITER. The dispersion interferometer is inherently insensitive to mechanical vibrations, and a combined polarimeter with the same line of sight can correct fringe jump errors. A proof of the principle of the CO2 laser dispersion interferometer combined with the PEM polarimeter was recently conducted, where the phase shift and the polarization angle were successfully measured simultaneously...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910340/analysis-method-for-thomson-scattering-diagnostics-in-gamma-10-pdx
#4
K Ohta, M Yoshikawa, R Yasuhara, M Chikatsu, Y Shima, J Kohagura, M Sakamoto, Y Nakasima, T Imai, M Ichimura, I Yamada, H Funaba, T Minami
We have developed an analysis method to improve the accuracies of electron temperature measurement by employing a fitting technique for the raw Thomson scattering (TS) signals. Least square fitting of the raw TS signals enabled reduction of the error in the electron temperature measurement. We applied the analysis method to a multi-pass (MP) TS system. Because the interval between the MPTS signals is very short, it is difficult to separately analyze each Thomson scattering signal intensity by using the raw signals...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27909868/dental-age-estimation-in-the-living-after-completion-of-third-molar-mineralization-new-data-for-gustafson-s-criteria
#5
M Timme, W H Timme, A Olze, C Ottow, S Ribbecke, H Pfeiffer, R Dettmeyer, A Schmeling
There is a need for dental age estimation methods after completion of the third molar mineralization. Degenerative dental characteristics appear to be suitable for forensic age diagnostics beyond the 18th year of life. In 2012, Olze et al. investigated the criteria studied by Gustafson using orthopantomograms. The objective of this study was to prove the applicability and reliability of this method with a large cohort and a wide age range, including older individuals. For this purpose, 2346 orthopantomograms of 1167 female and 1179 male Germans aged 15 to 70 years were reviewed...
December 1, 2016: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/27908190/accuracy-reproducibility-and-uncertainty-analysis-of-thyroid-probe-based-activity-measurements-for-determination-of-dose-calibrator-settings
#6
Pedro L Esquinas, Jesse Tanguay, Marjorie Gonzalez, Milan Vuckovic, Cristina Rodríguez-Rodríguez, Urs O Häfeli, Anna Celler
PURPOSE: In the nuclear medicine department, the activity of radiopharmaceuticals is measured using dose calibrators (DCs) prior to patient injection. The DC consists of an ionization chamber that measures current generated by ionizing radiation (emitted from the radiotracer). In order to obtain an activity reading, the current is converted into units of activity by applying an appropriate calibration factor (also referred to as DC dial setting). Accurate determination of DC dial settings is crucial to ensure that patients receive the appropriate dose in diagnostic scans or radionuclide therapies...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27906486/the-fractional-occupation-number-weighted-density-as-a-versatile-analysis-tool-for-molecules-with-a-complicated-electronic-structure
#7
Christoph Alexander Bauer, Andreas Hansen, Stefan Grimme
The fractional occupation number weighted density (FOD) analysis is explored as a general theoretical diagnostic for complicated electronic structures. Its main feature is to provide robustly and fast the information where 'hot' (strongly correlated and chemically active) electrons are localized in a molecule. We demonstrate its usage in four different prototypical applications: (i) As a new and fast measure for the biradical character of polycyclic aromatic hydrocarbons, (ii) for the selection of active orbital spaces in multiconfigurational or complete active space self consistent field (MCSCF/CASSCF) treatments, (iii) as a possibility to consistently describe molecular energy landscapes in regions with varying biradical character as exemplified by partial double bond torsions, and (iv) as a powerful visualization method for static electron correlation effects in large biomolecules in connection with an efficient semi-empirical tight-binding molecular orbital scheme...
December 1, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27903769/education-for-the-next-frontier-in-patient-safety-a-longitudinal-resident-curriculum-on-diagnostic-error
#8
Emily Ruedinger, Maren Olson, Justin Yee, Emily Borman-Shoap, Andrew P J Olson
Diagnostic error is a common, serious problem that has received increased attention recently for its impact on both patients and providers. Presently, most graduate medical education programs do not formally address this topic. The authors developed and evaluated a longitudinal, multimodule resident curriculum about diagnostic error and medical decision making. Key components of the curriculum include demystifying the medical decision-making process, building skills in critical thinking, and providing strategies for diagnostic error mitigation...
November 29, 2016: American Journal of Medical Quality: the Official Journal of the American College of Medical Quality
https://www.readbyqxmd.com/read/27899165/cognitive-dysfunction-in-body-dysmorphic-disorder-new-implications-for-nosological-systems-and-neurobiological-models
#9
Kiri Jefferies-Sewell, Samuel R Chamberlain, Naomi A Fineberg, Keith R Laws
: Introduction Body dysmorphic disorder (BDD) is a debilitating disorder, characterized by obsessions and compulsions relating specifically to perceived appearance, and which has been newly classified within the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) Obsessive-Compulsive and Related Disorders grouping. Until now, little research has been conducted into the cognitive profile of this disorder. METHODS: Participants with BDD (n=12) and participants without BDD (n=16) were tested using a computerized neurocognitive battery investigating attentional set-shifting (Intra/Extra Dimensional Set Shift Task), decision-making (Cambridge Gamble Task), motor response-inhibition (Stop-Signal Reaction Time Task), and affective processing (Affective Go-No Go Task)...
November 30, 2016: CNS Spectrums
https://www.readbyqxmd.com/read/27898734/diagnostic-accuracy-study-of-an-oscillometric-ankle-brachial-index-in-peripheral-arterial-disease-the-influence-of-oscillometric-errors-and-calcified-legs
#10
Ángel Herráiz-Adillo, Vicente Martínez-Vizcaíno, Iván Cavero-Redondo, Celia Álvarez-Bueno, Miriam Garrido-Miguel, Blanca Notario-Pacheco
BACKGROUND: Peripheral arterial disease (PAD) is an indicator of widespread atherosclerosis. However, most individuals with PAD, in spite of being at high cardiovascular risk, are asymptomatic. This fact, together with the limitations of the Doppler ankle-brachial index (ABI), contributes to PAD underdiagnose. The aim of this study was to compare oscillometric ABI and Doppler ABI to diagnose peripheral arterial disease, and also to examine the influence of oscillometric errors and calcified legs on the PAD diagnoses...
2016: PloS One
https://www.readbyqxmd.com/read/27897197/on-site-rapid-diagnosis-of-intracranial-hematoma-using-portable-multi-slice-microwave-imaging-system
#11
Ahmed Toaha Mobashsher, A M Abbosh
Rapid, on-the-spot diagnostic and monitoring systems are vital for the survival of patients with intracranial hematoma, as their conditions drastically deteriorate with time. To address the limited accessibility, high costs and static structure of currently used MRI and CT scanners, a portable non-invasive multi-slice microwave imaging system is presented for accurate 3D localization of hematoma inside human head. This diagnostic system provides fast data acquisition and imaging compared to the existing systems by means of a compact array of low-profile, unidirectional antennas with wideband operation...
November 29, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27897108/diagnostic-validity-and-clinical-utility-of-hba1c-tests-for-type-2-diabetes-mellitus
#12
Arthur Hamie Owora
Individual and population level inference about risk and burden of diabetes is often made using diagnostic tests that are imperfect and prone to misclassification error (i.e. false positives and negatives). These errors or biases are rarely accounted for and could lead to inappropriate clinical decisions, inefficient allocation of scarce resources, and poor planning of disease prevention and treatment interventions. The objective of this article is to describe how misclassification error due to imperfect diagnostic tests affects individual and population level inference, particularly involving the role of hemoglobin HbA1c in diagnosing Type 2 diabetes mellitus...
November 29, 2016: Current Diabetes Reviews
https://www.readbyqxmd.com/read/27894438/how-doctors-think-common-diagnostic-errors-in-clinical-judgment-lessons-from-an-undiagnosed-and-rare-disease-program
#13
REVIEW
Robert M Kliegman, Brett J Bordini, Donald Basel, James J Nocton
The scientific process of analysis and deduction is frequently, often subconsciously, used by physicians to develop a differential diagnosis based on patients' symptoms. Common disorders are most frequently diagnosed in general practice. Rare diseases are uncommon and frequently remain undiagnosed for many years. Cognitive errors in clinical judgment delay definitive diagnosis. Whole-exome sequencing has helped identify the cause of undiagnosed or rare diseases in up to 40% of children. This article provides experiences with an undiagnosed or rare disease program, where detailed data accumulation and a multifaceted analytical approach assisted in diagnosing atypical presentations of common disorders...
February 2017: Pediatric Clinics of North America
https://www.readbyqxmd.com/read/27893317/the-relation-between-intellectual-functioning-and-adaptive-behavior-in-the-diagnosis-of-intellectual-disability
#14
Marc J Tassé, Ruth Luckasson, Robert L Schalock
Intellectual disability originates during the developmental period and is characterized by significant limitations both in intellectual functioning and in adaptive behavior as expressed in conceptual, social, and practical adaptive skills. In this article, we present a brief history of the diagnostic criteria of intellectual disability for both the DSM-5 and AAIDD. The article also (a) provides an update of the understanding of adaptive behavior, (b) dispels two thinking errors regarding mistaken temporal or causal link between intellectual functioning and adaptive behavior, (c) explains that there is a strong correlational, but no causative, relation between intellectual functioning and adaptive behavior, and (d) asserts that once a question of determining intellectual disability is raised, both intellectual functioning and adaptive behavior are assessed and considered jointly and weighed equally in the diagnosis of intellectual disability...
December 2016: Intellectual and Developmental Disabilities
https://www.readbyqxmd.com/read/27893225/correction-to-fossati-et-al-2016
#15
(no author information available yet)
Reports an error in "Profiling Pathological Narcissism According to DSM-5 Domains and Traits: A Study on Consecutively Admitted Italian Psychotherapy Patients" by Andrea Fossati, Antonella Somma, Serena Borroni, Aaron L. Pincus, Kristian E. Markon and Robert F. Krueger (Psychological Assessment, Advanced Online Publication, Jun 23, 2016, np). In the original article, several values were reversed and the mean was misreported in Table 2. The corrected Table 2 is provided in the erratum. (The following abstract of the original article appeared in record 2016-31181-001...
November 28, 2016: Psychological Assessment
https://www.readbyqxmd.com/read/27893083/cohesive-referencing-errors-during-narrative-production-as-clinical-evidence-of-central-nervous-system-abnormality-in-school-aged-children-with-fetal-alcohol-spectrum-disorders
#16
John C Thorne, Truman E Coggins
Purpose: Previous evidence suggests that cohesive referencing errors made during narratives may be a behavior that is revealing of underlying central nervous system abnormality in children with fetal alcohol spectrum disorders (FASD). The current research extends this evidence. Method: Retrospective analysis of narrative and clinical data from 152 children (ages 6 to 14), 72 of whom had confirmed FASD, was used. Narrative analysis was conducted blind to diagnostic status, age, or gender...
November 1, 2016: American Journal of Speech-language Pathology
https://www.readbyqxmd.com/read/27893004/genetic-and-environmental-factors-associated-with-the-ganglion-cell-complex-in-a-healthy-aging-british-cohort
#17
Edward Bloch, Ekaterina Yonova-Doing, Eneh Jones-Odeh, Katie M Williams, Diana Kozareva, Christopher J Hammond
Importance: Measurement of ganglion cell complex (GCC) thickness may be more sensitive than current methods for glaucoma diagnosis and research. However, little is known about the factors influencing GCC thickness in the general population. Objectives: To investigate the heritability of and factors associated with GCC thickness in a healthy aging population. Design, Setting, and Participants: A cross-sectional twin study was conducted from August 27, 2014, to March 31, 2016, among 1657 participants of white British ancestry from the TwinsUK study cohort without ocular pathologic conditions...
November 17, 2016: JAMA Ophthalmology
https://www.readbyqxmd.com/read/27891743/ingressive-speech-errors-a-service-evaluation-of-speech-sound-therapy-in-a-child-aged-4-6
#18
Laura Hrastelj, Rachael-Anne Knight
BACKGROUND: A pattern of ingressive substitutions for word-final sibilants can be identified in a small number of cases in child speech disorder, with growing evidence suggesting it is a phonological difficulty, despite the unusual surface form. Phonological difficulty implies a problem with the cognitive process of organizing speech into sound contrasts. AIMS: To evaluate phonological therapy approaches in the remediation of non-pulmonic speech errors. Thus, adding to evidence concerning the nature of ingressive substitutions and their remediation whilst highlighting their occurrence within child speech disorder population for practising and training speech and language therapists...
November 27, 2016: International Journal of Language & Communication Disorders
https://www.readbyqxmd.com/read/27891451/assessing-the-reliability-of-digitalized-cephalometric-analysis-in-comparison-with-manual-cephalometric-analysis
#19
Mohammed Umar Farooq, Mohd Asadullah Khan, Shahid Imran, Ayesha Sameera, Arshad Qureshi, Syed Afroz Ahmed, Sujan Kumar, Mohd Aziz Ur Rahman
INTRODUCTION: For more than seven decades orthodontist used cephalometric analysis as one of the main diagnostic tools which can be performed manually or by software. The use of computers in treatment planning is expected to avoid errors and make it less time consuming with effective evaluation and high reproducibility. AIM: This study was done to evaluate and compare the accuracy and reliability of cephalometric measurements between computerized method of direct digital radiographs and conventional tracing...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27891446/requirements-for-minimum-sample-size-for-sensitivity-and-specificity-analysis
#20
REVIEW
Mohamad Adam Bujang, Tassha Hilda Adnan
Sensitivity and specificity analysis is commonly used for screening and diagnostic tests. The main issue researchers face is to determine the sufficient sample sizes that are related with screening and diagnostic studies. Although the formula for sample size calculation is available but concerning majority of the researchers are not mathematicians or statisticians, hence, sample size calculation might not be easy for them. This review paper provides sample size tables with regards to sensitivity and specificity analysis...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
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