keyword
MENU ▼
Read by QxMD icon Read
search

gleichs

keyword
https://www.readbyqxmd.com/read/28687726/propagation-based-phase-contrast-x-ray-imaging-at-a-compact-light-source
#1
Regine Gradl, Martin Dierolf, Lorenz Hehn, Benedikt Günther, Ali Önder Yildirim, Bernhard Gleich, Klaus Achterhold, Franz Pfeiffer, Kaye Susannah Morgan
We demonstrate the applicability of propagation-based X-ray phase-contrast imaging at a laser-assisted compact light source with known phantoms and the lungs and airways of a mouse. The Munich Compact Light Source provides a quasi-monochromatic beam with partial spatial coherence, and high flux relative to other non-synchrotron sources (up to 10(10) ph/s). In our study we observe significant edge-enhancement and quantitative phase-retrieval is successfully performed on the known phantom. Furthermore the images of a small animal show the potential for live bio-imaging research studies that capture biological function using short exposures...
July 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28684858/in-vivo-x-ray-dark-field-chest-radiography-of-a-pig
#2
Lukas B Gromann, Fabio De Marco, Konstantin Willer, Peter B Noël, Kai Scherer, Bernhard Renger, Bernhard Gleich, Klaus Achterhold, Alexander A Fingerle, Daniela Muenzel, Sigrid Auweter, Katharina Hellbach, Maximilian Reiser, Andrea Baehr, Michaela Dmochewitz, Tobias J Schroeter, Frieder J Koch, Pascal Meyer, Danays Kunka, Juergen Mohr, Andre Yaroshenko, Hanns-Ingo Maack, Thomas Pralow, Hendrik van der Heijden, Roland Proksa, Thomas Koehler, Nataly Wieberneit, Karsten Rindt, Ernst J Rummeny, Franz Pfeiffer, Julia Herzen
X-ray chest radiography is an inexpensive and broadly available tool for initial assessment of the lung in clinical routine, but typically lacks diagnostic sensitivity for detection of pulmonary diseases in their early stages. Recent X-ray dark-field (XDF) imaging studies on mice have shown significant improvements in imaging-based lung diagnostics. Especially in the case of early diagnosis of chronic obstructive pulmonary disease (COPD), XDF imaging clearly outperforms conventional radiography. However, a translation of this technique towards the investigation of larger mammals and finally humans has not yet been achieved...
July 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28619060/incidence-disease-onset-and-short-term-outcome-in-urea-cycle-disorders-cross-border-surveillance-in-germany-austria-and-switzerland
#3
Susanne Nettesheim, Stefan Kölker, Daniela Karall, Johannes Häberle, Roland Posset, Georg F Hoffmann, Beate Heinrich, Florian Gleich, Sven F Garbade
BACKGROUND: Urea cycle disorders (UCDs) are a group of rare inherited metabolic disorders. Affected individuals often present with hyperammonemic encephalopathy (HE) and have an increased risk of severe neurologic disease and early death. The study aims to provide epidemiologic data and to describe the disease manifestation and short-term outcome. METHOD: Cross-border surveillance of newly diagnosed patients with UCDs - below 16 years of age - was performed from July 2012 to June 2015 in Germany and Austria and from January 2012 to December 2015 in Switzerland...
June 15, 2017: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/28609302/association-between-exposure-of-young-children-to-procedures-requiring-general-anesthesia-and-learning-and-behavioral-outcomes-in-a-population-based-birth-cohort
#4
Danqing Hu, Randall P Flick, Michael J Zaccariello, Robert C Colligan, Slavica K Katusic, Darrell R Schroeder, Andrew C Hanson, Shonie L Buenvenida, Stephen J Gleich, Robert T Wilder, Juraj Sprung, David O Warner
BACKGROUND: Exposure of young animals to general anesthesia causes neurodegeneration and lasting behavioral abnormalities; whether these findings translate to children remains unclear. This study used a population-based birth cohort to test the hypothesis that multiple, but not single, exposures to procedures requiring general anesthesia before age 3 yr are associated with adverse neurodevelopmental outcomes. METHODS: A retrospective study cohort was assembled from children born in Olmsted County, Minnesota, from 1996 to 2000 (inclusive)...
August 2017: Anesthesiology
https://www.readbyqxmd.com/read/28604579/how-to-avoid-a-learning-curve-in-stapedotomy-a-standardized-surgical-technique
#5
Pingling Kwok, Otto Gleich, Katharina Dalles, Elisabeth Mayr, Peter Jacob, Jürgen Strutz
OBJECTIVE: To evaluate, whether a learning curve for beginners in stapedotomy can be avoided by using a prosthesis with thermal memory-shape attachment in combination with a standardized laser-assisted surgical technique. STUDY DESIGN: Retrospective case review. SETTING: Tertiary referral center. PATIENTS: Fifty-eight ears were operated by three experienced surgeons and compared with a group of 12 cases operated by a beginner in stapedotomy...
August 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28557803/grueneisen-approach-for-the-experimental-determination-of-transient-spin-and-phonon-energies-from-ultrafast-x-ray-diffraction-data-gadolinium
#6
A Koc, M Reinhardt, A von Reppert, M Rössle, W Leitenberger, M Gleich, M Weinelt, F Zamponi, M Bargheer
We study gadolinium thin films as a model system for ferromagnets with negative thermal expansion. Ultrashort laser pulses heat up the electronic subsystem and we follow the transient strain via ultrafast x-ray diffraction. In terms of a simple Grueneisen approach, the strain is decomposed into two contributions proportional to the thermal energy of spin and phonon subsystems. Our analysis reveals that upon femtosecond laser excitation, phonons and spins can be driven out of thermal equilibrium for several nanoseconds...
July 5, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28551586/analysis-of-2d-nmr-relaxation-data-using-chisholm-approximations
#7
S Huber, A Haase, B Gleich
To analyze 2D NMR relaxation data based on a discrete delta-like relaxation map we extended the Padé-Laplace method to two dimensions. We approximate the forward Laplace image of the time domain signal by a Chisholm approximation, i.e. a rational polynomial in two dimensions. The poles and residues of this approximation correspond to the relaxation rates and weighting factors of the underlying relaxation map. In this work we explain the principle ideas of our algorithm and demonstrate its applicability. Therefore we compare the inversion results of the Chisholm approximation and Tikhonov regularization method as a function of SNR when the investigated signal is based on a given discrete relaxation map...
May 19, 2017: Journal of Magnetic Resonance
https://www.readbyqxmd.com/read/28514601/mepolizumab-or-placebo-for-eosinophilic-granulomatosis-with-polyangiitis
#8
RANDOMIZED CONTROLLED TRIAL
Michael E Wechsler, Praveen Akuthota, David Jayne, Paneez Khoury, Amy Klion, Carol A Langford, Peter A Merkel, Frank Moosig, Ulrich Specks, Maria C Cid, Raashid Luqmani, Judith Brown, Stephen Mallett, Richard Philipson, Steve W Yancey, Jonathan Steinfeld, Peter F Weller, Gerald J Gleich
BACKGROUND: Eosinophilic granulomatosis with polyangiitis is an eosinophilic vasculitis. Mepolizumab, an anti-interleukin-5 monoclonal antibody, reduces blood eosinophil counts and may have value in the treatment of eosinophilic granulomatosis with polyangiitis. METHODS: In this multicenter, double-blind, parallel-group, phase 3 trial, we randomly assigned participants with relapsing or refractory eosinophilic granulomatosis with polyangiitis who had received treatment for at least 4 weeks and were taking a stable prednisolone or prednisone dose to receive 300 mg of mepolizumab or placebo, administered subcutaneously every 4 weeks, plus standard care, for 52 weeks...
May 18, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28478919/pharyngeal-mucosa-brushing-does-not-correlate-with-disease-activity-in-patients-with-eosinophilic-esophagitis
#9
Hedieh Saffari, Krista Baer, Kathleen K Boynton, Gerald J Gleich, Kathryn A Peterson
No abstract text is available yet for this article.
May 3, 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/28475562/leukocyte-adhesion-as-an-indicator-of-oxygenator-thrombosis-during-extracorporeal-membrane-oxygenation-therapy
#10
Julius Wilm, Alois Philipp, Thomas Müller, Andre Bredthauer, Otto Gleich, Christof Schmid, Karla Lehle
Thrombosis is the most common technical complication with extracorporeal membrane oxygenation (ECMO). Accumulations of leukocytes on the gas exchange membranes within a membrane oxygenator (MO) may initiate thrombosis and influence outcome. MOs (n = 41) were removed routinely from adult patients on ECMO, preserved, and analyzed for their cellular deposits using nuclear (4',6-diamidino-2-phenylindole) and cell type-specific markers (CD45; von Willebrand factor, vWF). The extent of cellular colonization was correlated with patient data...
May 4, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28432171/ascites-in-a-patient-with-episodic-angio-oedema-and-eosinophilia-thinking-outside-the-box
#11
Eirini I Rigopoulou, Maria Ioannou, Georgia Papadamou, Georgios N Dalekos
Episodic angio-oedema with eosinophilia (EAE) or Gleich's syndrome is a rare condition characterised by recurrent episodes of oedema and eosinophilia, accompanied by urticaria, fever and weight gain. The presence of ascites has not been reported so far. We report a 21-year-old Caucasian woman who presented with marked ocular oedema and ascites. Laboratory evaluation revealed marked eosinophilia. During the last 3 months, three episodes of facial and neck oedema were reported, which resolved spontaneously over a period of 3-5 days...
April 21, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28398211/influence-of-the-pump-pulse-wavelength-on-the-ultrafast-demagnetization-of-gd-0001-thin-films
#12
Kamil Bobowski, Markus Gleich, Niko Pontius, Christian Schuessler-Langeheine, Christoph Trabant, Marko Wietstruk, Björn Frietsch, Martin Weinelt
We studied the magnetization dynamics of gadolinium metal after femtosecond laser excitation recording the X-ray magnetic circular dichroism in reflection (XMCD-R) at the Gd $M_5$ absorption edge. Varying the photon energy of the pump pulse allows us to change the initial energy distribution of photoexcited carriers. The overall similar response for excitation with 0.95, 1.55 and 3.10\,eV photons at comparable pump fluences indicates that ultrafast ballistic carrier transport leads to a homogeneous energy distribution on the femtosecond timescale in the probed sample volume...
April 11, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28323159/functional-changes-in-the-reward-circuit-in-response-to-gaming-related-cues-after-training-with-a-commercial-video-game
#13
Tobias Gleich, Robert C Lorenz, Jürgen Gallinat, Simone Kühn
In the present longitudinal study, we aimed to investigate video game training associated neuronal changes in reward processing using functional magnetic resonance imaging (fMRI). We recruited 48 healthy young participants which were assigned to one of 2 groups: A group in which participants were instructed to play a commercial video game ("Super Mario 64 DS") on a portable Nintendo DS handheld console at least 30minutes a day over a period of two months (video gaming group; VG) or to a matched passive control group (CG)...
March 18, 2017: NeuroImage
https://www.readbyqxmd.com/read/28287965/interactive-magnetic-catheter-steering-with-3-d-real-time-feedback-using-multi-color-magnetic-particle-imaging
#14
Jurgen Rahmer, Daniel Wirtz, Claas Bontus, Jorn Borgert, Bernhard Gleich
Magnetic particle imaging (MPI) is an emerging tomographic method that enables sensitive and fast imaging. It does not require ionizing radiation and thus may be a safe alternative for tracking of devices in the catheterization laboratory. The 3-D real-time imaging capabilities of MPI have been demonstrated in vivo and recent improvements in fast online image reconstruction enable almost real-time data reconstruction and visualization. Moreover, based on the use of different magnetic particle types for catheter visualization and blood pool imaging, multi-color MPI enables reconstruction of separate images for the catheter and the vessels from simultaneously measured data...
July 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28200073/aptrank-an-adaptive-pagerank-model-for-protein-function-prediction-on-bi-relational-graphs
#15
Biaobin Jiang, Kyle Kloster, David F Gleich, Michael Gribskov
No abstract text is available yet for this article.
February 14, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28195568/military-deployment-correlates-with-smaller-prefrontal-gray-matter-volume-and-psychological-symptoms-in-a-subclinical-population
#16
O Butler, J Adolf, T Gleich, G Willmund, P Zimmermann, U Lindenberger, J Gallinat, S Kühn
Research investigating the effects of trauma exposure on brain structure and function in adults has mainly focused on post-traumatic stress disorder (PTSD), whereas trauma-exposed individuals without a clinical diagnoses often serve as controls. However, this assumes a dichotomy between clinical and subclinical populations that may not be supported at the neural level. In the current study we investigate whether the effects of repeated or long-term stress exposure on brain structure in a subclinical sample are similar to previous PTSD neuroimaging findings...
February 14, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28181544/mono-energy-coronary-angiography-with-a-compact-synchrotron-source
#17
Elena Eggl, Korbinian Mechlem, Eva Braig, Stephanie Kulpe, Martin Dierolf, Benedikt Günther, Klaus Achterhold, Julia Herzen, Bernhard Gleich, Ernst Rummeny, Peter B Noёl, Franz Pfeiffer, Daniela Muenzel
X-ray coronary angiography is an invaluable tool for the diagnosis of coronary artery disease. However, the use of iodine-based contrast media can be contraindicated for patients who present with chronic renal insufficiency or with severe iodine allergy. These patients could benefit from a reduced contrast agent concentration, possibly achieved through application of a mono-energetic x-ray beam. While large-scale synchrotrons are impractical for daily clinical use, the technology of compact synchrotron sources strongly advanced during the last decade...
February 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28110087/internal-and-external-attention-and-the-default-mode-network
#18
Hannah J Scheibner, Carsten Bogler, Tobias Gleich, John-Dylan Haynes, Felix Bermpohl
Focused attention meditations have been shown to improve psychological health and wellbeing and are nowadays an integral part of many psychotherapies. While research on the neural correlates of focused attention meditation is increasing, findings vary on whether meditations are associated with high or low activity in the default mode network (DMN). To clarify the relationship between focused attention meditation and the activity in DMN regions, it may be helpful to distinguish internal and external attention as well as different phases within one meditation: During focused attention meditation, the practitioner switches between mindful attention, mind-wandering and refocusing...
March 1, 2017: NeuroImage
https://www.readbyqxmd.com/read/28099287/anesthetic-outcomes-of-children-with-arthrogryposis-syndromes-no-evidence-of-hyperthermia
#19
Stephen J Gleich, Michael Tien, Darrell R Schroeder, Andrew C Hanson, Randall Flick, Michael E Nemergut
BACKGROUND: Arthrogryposis syndromes are a heterogeneous group of disorders characterized by congenital joint contractures often requiring multiple surgeries during childhood to address skeletal and visceral abnormalities. Previous reports suggest that these children have increased perioperative risk, including hypermetabolic events discrete from malignant hyperthermia, difficult airway management, isolated hyperthermia, and difficult IV line placement. We sought to compare children with arthrogryposis multiplex congenita (AMC) versus the less severe, distal arthrogryposis syndromes (DAS) and to evaluate possible intraoperative hyperthermia of patients with AMC...
March 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28052271/establishment-and-characterization-of-an-sv40-large-t-antigen-transduced-porcine-colonic-epithelial-cell-line
#20
Bastian Kaiser, Martina Böttner, Thilo Wedel, Ronald M Brunner, Tom Goldammer, Szilvia Lesko, Gotthold Gäbel, Alexander Gleich, Helga Pfannkuche
Continuous cell lines have become indispensable tools that have enabled investigations into cellular mechanisms by increasing experimental reproducibility and sample availability, and decreasing the use of experimental animals. To facilitate studies of epithelial barrier function of the porcine colon, we aimed to establish an epithelial cell line with an extended replicative capacity. Cells were isolated from the proximal colon of a 3-week-old piglet and transduced using a recombinant retroviral vector construct containing the simian virus 40 large T antigen (SV40 TAg)...
2017: Cells, Tissues, Organs
keyword
keyword
53947
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"