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https://www.readbyqxmd.com/read/28653515/-post-traumatic-diaphragmatic-herniation-case-report-and-literature-review
#1
REVIEW
J Kadou, A Fobelets, A Kadou, K Bochouari, R Attou
Post-traumatic diaphragmatic herniation is not common, but its diagnosis can be easily missed in the early management. Late diagnosis is shown to increase morbidity and mortality of those patients. It is thus extremely important to keep that possibility in mind while examining post- traumatic patients, and interpreting CT scan images. This article will first describe a case report of a young man presenting an intrathoracic herniation of the stomach, before proceeding to a literature review to describe and recognize this particular entity...
2017: Revue Médicale de Bruxelles
https://www.readbyqxmd.com/read/28653303/the-importance-of-body-mass-normalisation-for-ultrasound-measurements-of-the-morphology-of-oblique-abdominis-muscles-the-effect-of-age-gender-and-sport-practice
#2
Pawel Linek
Some studies have not considered body mass as a confounder in analysis of oblique abdominis muscles (OAM) (including the oblique externus [OE] and oblique internus [OI]), which may have led to improper interpretation of results. To assess the differences in the effect of age, gender, and physical activity between normalised for body mass and actual values of the OAM as well as to establish the effect of age, gender, and physical activity on normalised for body mass OAM thicknesses in adolescents. A real-time ultrasound was used to obtain images of the OAM...
June 27, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28653036/assessment-of-amyloid-%C3%AE-in-pathologically-confirmed-frontotemporal-dementia-syndromes
#3
Rachel H Tan, Jillian J Kril, Yue Yang, Nicole Tom, John R Hodges, Victor L Villemagne, Christopher C Rowe, Cristian E Leyton, John B J Kwok, Lars M Ittner, Glenda M Halliday
INTRODUCTION: The diagnostic utility of in vivo amyloid β (Aβ) imaging to aid in the clinical distinction between frontotemporal dementia (FTD) and Alzheimer's disease remains unclear without data on the prevalence and severity of Aβ in pathologically confirmed FTD syndromes. METHODS: Aβ was assessed in 98 autopsy-confirmed FTD and 36 control cases, and the pathological accuracy of (11)C-Pittsburgh compound B (PiB)-positron emission tomography imaging was assessed in a subset of FTD cases (n = 15)...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28653022/robust-reconstruction-of-time-resolved-diffraction-from-ultrafast-streak-cameras
#4
Daniel S Badali, R J Dwayne Miller
In conjunction with ultrafast diffraction, streak cameras offer an unprecedented opportunity for recording an entire molecular movie with a single probe pulse. This is an attractive alternative to conventional pump-probe experiments and opens the door to studying irreversible dynamics. However, due to the "smearing" of the diffraction pattern across the detector, the streaking technique has thus far been limited to simple mono-crystalline samples and extreme care has been taken to avoid overlapping diffraction spots...
September 2017: Structural Dynamics (Melville, N.Y.)
https://www.readbyqxmd.com/read/28651747/the-rise-of-artificial-intelligence-and-the-uncertain-future-for-physicians
#5
EDITORIAL
C Krittanawong
Physicians in everyday clinical practice are under pressure to innovate faster than ever because of the rapid, exponential growth in healthcare data. "Big data" refers to extremely large data sets that cannot be analyzed or interpreted using traditional data processing methods. In fact, big data itself is meaningless, but processing it offers the promise of unlocking novel insights and accelerating breakthroughs in medicine-which in turn has the potential to transform current clinical practice [1]. Physicians can analyze big data, but at present it requires a large amount of time and sophisticated analytic tools such as supercomputers...
June 23, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28651260/the-cdd-system-in-computed-tomographic-diagnosis-of%C3%A2-diverticular-disease
#6
Daniel Pustelnik, Fabian Henry Jürgen Elsholtz, Christian Bojarski, Bernd Hamm, Stefan Markus Niehues
Purpose This overview sums up the Classification of Diverticular Disease (CDD) with regard to its application in computed tomographic diagnosis and briefly recapitulates its targeted advantages over preliminary systems. Primarily, application of the CDD in computed tomography diagnostics is described. Differences with respect to the categories of the older systems are pointed out on the level of each CDD type using imaging examples. Materials and Methods The presented images are derived from our institute according to the S2k criteria...
June 26, 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28649200/cognitive-variability-during-middle-age-possible-association-with-neurodegeneration-and-cognitive-reserve
#7
Daniel Ferreira, Alejandra Machado, Yaiza Molina, Antonieta Nieto, Rut Correia, Eric Westman, José Barroso
Objective: Increased variability in cognition with age has been argued as an indication of pathological processes. Focusing on early detection of neurodegenerative disorders, we investigated variability in cognition in healthy middle-aged adults. In order to understand possible determinants of this variability, we also investigated associations with cognitive reserve, neuroimaging markers, subjective memory complaints, depressive symptomatology, and gender. Method: Thirty-one 50 ± 2 years old individuals were investigated as target group and deviation was studied in comparison to a reference younger group of 30 individuals 40 ± 2 years old...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28649194/seeing-double-exploring-the-phenomenology-of-self-reported-absence-of-rivalry-in-bistable-pictures
#8
Elisa Filevich, Maxi Becker, Yuan-Hao Wu, Simone Kühn
Ambiguous images such as Rubin's vase-face can be interpreted in at least two different ways. These interpretations are typically taken to be mutually exclusive, and ambiguous images have thus served as models of perceptual competition. Here, we present data that challenges this view. In an online survey, we found that a large proportion of people within the general population reported that the two percepts were not competing but could be perceived simultaneously. Of those who reported that they could see both percepts simultaneously, we invited 17 participants to take part in a functional magnetic resonance imaging (fMRI) experiment...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28648125/accuracy-of-the-diagnostic-evaluation-of-hepatocellular-carcinoma-with-li-rads
#9
Weimin Liu, Jie Qin, Ruomi Guo, Sidong Xie, Hang Jiang, Xiaohong Wang, Zhuang Kang, Jin Wang, Hong Shan
Background There are few studies about the Liver Imaging Reporting and Data System (LI-RADS), which was developed with the purpose of standardizing the interpretation and reporting of liver imaging examinations in patients at risk for hepatocellular carcinoma (HCC). Purpose To evaluate the diagnostic accuracy of HCC diagnosis using LI-RADS. Material and Methods The computed tomography (CT), magnetic resonance imaging (MRI), and clinical data of 297 lesions in 249 patients between June 2012 and August 2013 were retrospectively analyzed...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28647768/li-rads-%C3%A2-ancillary-features-on-ct-and-mri
#10
REVIEW
Victoria Chernyak, An Tang, Milana Flusberg, Demetri Papadatos, Bijan Bijan, Yuko Kono, Cynthia Santillan
The Liver Imaging Reporting and Data System (LI-RADS) uses an algorithm to assign categories that reflect the probability of hepatocellular carcinoma (HCC), non-HCC malignancy, or benignity. Unlike other imaging algorithms, LI-RADS utilizes ancillary features (AFs) to refine the final category. AFs in LI-RADS v2017 are divided into those favoring malignancy in general, those favoring HCC specifically, and those favoring benignity. Additionally, LI-RADS v2017 provides new rules regarding application of AFs. The purpose of this review is to discuss ancillary features included in LI-RADS v2017, the rationale for their use, potential pitfalls encountered in their interpretation, and tips on their application...
June 24, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28647766/impact-of-patient-questionnaires-on-completeness-of-clinical-information-and-identification-of-causes-of-pain-during-outpatient-abdominopelvic-ct-interpretation
#11
Ankur M Doshi, Chenchan Huang, Luke Ginocchio, Krishna Shanbhogue, Andrew B Rosenkrantz
PURPOSE: To evaluate the impact of questionnaires completed by patients at the time of abdominopelvic CT performed for abdominal pain on the completeness of clinical information and the identification of potential causes of pain, compared with order requisitions alone. METHODS: 100 outpatient CT examinations performed for the evaluation of abdominal pain were retrospectively reviewed. The specificity of the location of pain was compared between the order requisition and patient questionnaire...
June 24, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28647430/determining-the-relevant-criteria-for-three-dimensional-vocal-tract-characterization
#12
Rebecca R Vos, Damian T Murphy, David M Howard, Helena Daffern
OBJECTIVE: Soprano singers face a number of specific challenges when singing vowels at high frequencies, due to the wide spacing of harmonics in the voice source. The varied and complex techniques used to overcome these are still not fully understood. Magnetic resonance imaging (MRI) has become increasingly popular in recent years for singing voice analysis. This study proposes a new protocol using three-dimensional MRI to investigate the articulatory parameters relevant to resonance tuning, a technique whereby singers alter their vocal tract to shift its resonances nearer to a voice source harmonic, increasing the amplitude of the sound produced...
June 21, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28647022/reprint-of-noise-contributions-to-the-fmri-signal-an-overview
#13
Thomas T Liu
The ability to discriminate signal from noise plays a key role in the analysis and interpretation of functional magnetic resonance imaging (fMRI) measures of brain activity. Over the past two decades, a number of major sources of noise have been identified, including system-related instabilities, subject motion, and physiological fluctuations. This article reviews the characteristics of the various noise sources as well as the mechanisms through which they affect the fMRI signal. Approaches for distinguishing signal from noise and the associated challenges are also reviewed...
July 1, 2017: NeuroImage
https://www.readbyqxmd.com/read/28646682/sensing-nadh-conformation-using-phasor-analysis-on-fluorescence-spectra
#14
Dylan Palo, Jeff Maltas, Laxmi Risal, Paul Urayama
Phasor analysis on fluorescence signals is a sensitive approach for analyzing multicomponent systems. Initially developed for time-resolved measurements, a spectral version has been used for the rapid identification of regions during the spectral imaging of biological systems. Here we show that quantitative information regarding conformation can be obtained from phasor analysis of fluorescence spectrum shape. Methanol denaturation of NADH and NADH binding to various dehydrogenase proteins are used as model reactions...
June 8, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28646316/identifying-major-events-in-two-sturgeons-life-using-pectoral-fin-spine-ring-structure-exploring-the-use-of-a-non-destructive-method
#15
Shima Bakhshalizadeh, Ali Bani, Shahram Abdolmalaki, Natalie Moltschaniwskyj
Maturation is one of the most important life history traits that influences on many ecological characteristics of animals. This study aimed to describe the indirect distinguish of first reproduction and habitat shift (transition from the pelagic to benthic environment), using the width of translucent and annuluses of the pectoral fin spine of two sturgeon species, Persian sturgeon, Acipenser persicus, and starry sturgeon, Acipenser stellatus. Interpretation of growth bands in pectoral fin sections was done objectively using direct reading of thin sections and image analysis...
June 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28645844/modelling-and-interpreting-mesoscale-network-dynamics
#16
REVIEW
Ankit N Khambhati, Ann E Sizemore, Richard F Betzel, Danielle S Bassett
Recent advances in brain imaging techniques, measurement approaches, and storage capacities have provided an unprecedented supply of high temporal resolution neural data. These data present a remarkable opportunity to gain a mechanistic understanding not just of circuit structure, but also of circuit dynamics, and its role in cognition and disease. Such understanding necessitates a description of the raw observations, and a delineation of computational models and mathematical theories that accurately capture fundamental principles behind the observations...
June 20, 2017: NeuroImage
https://www.readbyqxmd.com/read/28644065/ventricular-pseudodiverticula-from-intraparenchymal-cerebrospinal-fluid-dissection-secondary-to-high-grade-obstructive-hydrocephalus-in-children-magnetic-resonance-imaging-findings
#17
Sonia F Calloni, Bruno P Soares, Thierry Agm Huisman
We report on a series of three children who presented with a focal cerebrospinal fluid collection within the periventricular white matter of the temporal and occipital lobes in the setting of high-grade obstructive hydrocephalus. Magnetic resonance imaging showed a focal defect within the ventricular wall associated with leakage of cerebrospinal fluid into the adjacent white matter. The white matter tracts appeared primarily displaced. This entity should be referred to as ventricular pseudodiverticulum, not lined by ependymal cells, in contrast to a true ventricular diverticulum in which the cerebrospinal fluid is contained by a focal outpouching of the intact ventricular wall lined by a dilated and prolapsed layer of ependymal cells...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28643907/utilizing-three-dimensional-data-in-orthodontic-practice-and-research
#18
REVIEW
R C Solem
The recent prevalence of three dimensional (3D) images of soft and hard tissues provides a wealth of new data from which the clinician can evaluate these changes. However, evaluating this new data presents new and significant challenges. Current approaches utilizing multi-dimensional data for the precise evaluation of changes related to treatment and growth sets are reviewed. The results of current validation studies exploring approaches to these problems are reviewed, including the registration of longitudinal data using maxillary and mandibular regions of reference...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643094/accuracy-and-reading-time-for-six-strategies-using-digital-breast-tomosynthesis-in-women-with-mammographically-negative-dense-breasts
#19
Alberto Stefano Tagliafico, Massimo Calabrese, Bianca Bignotti, Alessio Signori, Erica Fisci, Federica Rossi, Francesca Valdora, Nehmat Houssami
OBJECTIVE: To compare six strategies using digital breast tomosynthesis in women with mammographically negative dense breasts. MATERIALS AND METHODS: This is a substudy of the 'ASTOUND' trial. 163 women who underwent tomosynthesis with synthetically reconstructed projection images (S-2D) inclusive of 13 (7.9%) cases diagnosed with breast cancer at histopathology after surgery were evaluated. Accuracy measures and screen-reading time of six reading strategies were assessed: (A) Single reading of S-2D alone, (B) single reading of tomosynthesis alone, (C) single reading of joint interpretation of tomosynthesis + S-2D, (D) double-reading of S-2D alone, (E) double reading of tomosynthesis alone, (F) double reading of joint interpretation of tomosynthesis + S-2D...
June 22, 2017: European Radiology
https://www.readbyqxmd.com/read/28642691/mri-overestimates-excitotoxic-amygdala-lesion-damage-in-rhesus-monkeys
#20
Benjamin M Basile, Chloe L Karaskiewicz, Emily C Fiuzat, Ludise Malkova, Elisabeth A Murray
Selective, fiber-sparing excitotoxic lesions are a state-of-the-art tool for determining the causal contributions of different brain areas to behavior. For nonhuman primates especially, it is advantageous to keep subjects with high-quality lesions alive and contributing to science for many years. However, this requires the ability to estimate lesion extent accurately. Previous research has shown that in vivo T2-weighted magnetic resonance imaging (MRI) accurately estimates damage following selective ibotenic acid lesions of the hippocampus...
2017: Frontiers in Integrative Neuroscience
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