808,270 results match your criteria Magnetic Resonance Materials in Physics Biology and Medicine[Journal]


[Application of stretched exponential diffusion-weighted imaging model in quantitative diagnosis of nonalcoholic fatty liver disease: in a rabbit model].

Zhonghua Yi Xue Za Zhi 2019 Feb;99(7):500-504

Department of Radiology, Northern Jiangsu People's Hospital, Clinical Medical School of Yangzhou University, Yangzhou 225001, China.

To evaluate the feasibility of diffusion parameters obtained from mono-exponential and stretched exponential diffusion-weighted imaging models in staging of nonalcoholic fatty liver disease and compare the diagnosis ability of nonalcoholic steatohepatitis. Thirty-two 12 -week-old male New Zealand rabbits, about 2.5 kg of each, were randomly divided into five groups. Read More

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http://dx.doi.org/10.3760/cma.j.issn.0376-2491.2019.07.005DOI Listing
February 2019

[Magnetic resonance imaging and diffusion weighted imaging features of focal peliosis hepatis].

Zhonghua Yi Xue Za Zhi 2019 Feb;99(7):496-499

Department of Radiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Medical Imaging, Department of Medical Imaging, Shanghai Medical College, Fudan University, Shanghai 200032, China.

To investigate the MRI and diffusion weighted imaging (DWI) features of focal peliosis hepatis. The clinical data and MRI of 19 cases with focal peliosis hepatis confirmed by pathology from January 2012 to March 2018 in Zhongshan Hospital of Fudan University were retrospectively analyzed. The number, location, size, shape, signal intensity of plain scan of lesions, enhancement pattern of lesions, vessels within lesions, and perfusion disorders of hepatic parenchyma were analyzed. Read More

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http://dx.doi.org/10.3760/cma.j.issn.0376-2491.2019.07.004DOI Listing
February 2019

Corrigendum: Statistical thermodynamics and magnetic moments of Landau quantized group VI dichalcogenides (2018 J. Phys.: Condens. Matter 30 055302).

J Phys Condens Matter 2019 Feb 20. Epub 2019 Feb 20.

Department of Physics, Stevens Institute of Technology, Castle Point Station, Hoboken, New Jersey, 07030, UNITED STATES.

This corrigendum corrects errors in the article "Statistical thermodynamics and magnetic moments of landau quantized group VI dichalcogenides", N.J.M. Read More

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http://dx.doi.org/10.1088/1361-648X/ab08dcDOI Listing
February 2019

Assessing image artifacts from radiotherapy electromagnetic transponders with metal-artifact reduction imaging.

Magn Reson Imaging 2019 Feb 17. Epub 2019 Feb 17.

Department of Physics & Astronomy, University of Manitoba, Canada; Medical Physics, CancerCare Manitoba, Canada.

Image artifacts due to 14 gauge radiotherapy electromagnetic (EM) transponders were assessed on conventional spin echo images, and corrected using metal artifact reduction techniques: high bandwidth, view angle tilting (VAT), and slice encoding for metal artifact correction (SEMAC). Large areas of signal loss and/or pile-up were produced in an area extending up to 15.3 mm in radius for 14G transponders in standard imaging. Read More

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http://dx.doi.org/10.1016/j.mri.2019.02.005DOI Listing
February 2019

Alterations in Synovial Fluid Biomarker Levels in Knees With Meniscal Injury as Compared With Asymptomatic Contralateral Knees.

Am J Sports Med 2019 Feb 20:363546519825498. Epub 2019 Feb 20.

Division of Sports Medicine, Department of Orthopaedic Surgery, NYU Langone Health, New York, New York, USA.

Background:: Changes in the joint microenvironment after an injury to the articular surface of the knee have been implicated in the pathogenesis of osteoarthritis. While prior studies focused on changes in this microenvironment after anterior cruciate ligament ruptures, few have explored the biomarker changes that occur in the setting of meniscal injuries.

Purpose:: To determine whether meniscal injury results in significant alterations to synovial fluid biomarker concentrations as compared with noninjured contralateral knees. Read More

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http://dx.doi.org/10.1177/0363546519825498DOI Listing
February 2019

High blocking temperature of magnetization and giant coercivity in the azafullerene Tb2@C79N with a single-electron Tb-Tb bond.

Angew Chem Int Ed Engl 2019 Feb 20. Epub 2019 Feb 20.

Virginia Tech, UNITED STATES.

The azafullerene Tb2@C79N is found to be a single molecule magnet with a high 100-s blocking temperature of magnetization of 24 K and large coercivity. Tb magnetic moments with an easy-axis single-ion magnetic anisotropy are strongly coupled by the unpaired spin of the single-electron Tb-Tb bond. Relaxation of magnetization in Tb2@C79N below 15 K proceeds via quantum tunneling of magnetization with the characteristic time τQTM = 16462±1230 s. Read More

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http://dx.doi.org/10.1002/anie.201900943DOI Listing
February 2019

A promising structural magnetic resonance imaging assessment in patients with preclinical cognitive decline and diabetes mellitus.

J Cell Physiol 2019 Feb 20. Epub 2019 Feb 20.

Department of Radiology, the First Affiliated Hospital of University of South China, Hengyang, China.

Subjective cognitive decline (SCD) is frequently reported in diabetic patients. Diabetes mellitus (DM) is associated with changes in the microstructure of the brain arise in diabetic patients, including changes in gray matter volume (GMV). However, the underlying mechanisms of changes in GMV in DM patients with cognitive impairment remain uncertain. Read More

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http://dx.doi.org/10.1002/jcp.28359DOI Listing
February 2019

In vivo prediction of temporomandibular joint disc thickness and position changes for different jaw positions.

J Anat 2019 Feb 20. Epub 2019 Feb 20.

Department of Computer Science, University of Saskatchewan, Saskatoon, SK, Canada.

Temporomandibular joint disorders (TMD) are common dysfunctions of the masticatory region and are often linked to dislocation or changes of the temporomandibular joint (TMJ) disc. Magnetic resonance imaging (MRI) is the gold standard for TMJ imaging but standard clinical sequences do not deliver a sufficient resolution and contrast for the creation of detailed meshes of the TMJ disc. Additionally, bony structures cannot be captured appropriately using standard MRI sequences due to their low signal intensity. Read More

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http://dx.doi.org/10.1111/joa.12951DOI Listing
February 2019
2.097 Impact Factor

Combination of colonoscopy and magnetic resonance enterography is more useful for clinical decision making than colonoscopy alone in patients with complicated Crohn's disease.

PLoS One 2019 20;14(2):e0212404. Epub 2019 Feb 20.

Center for Advanced IBD Research and Treatment, Kitasato University Kitasato Institute Hospital, Minato-ku, Tokyo, Japan.

Background/aims: The small bowel is affected in more than half of patients with Crohn's disease (CD) at the time of diagnosis, and small bowel involvement has a negative impact on the long-term outcome. Many patients reportedly have active lesions in the small intestine even in patients in clinical remission. This study was performed to compare findings of magnetic resonance enterography (MRE) and ileocolonoscopy. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0212404PLOS
February 2019

Planning Face, Hand, and Leg Movements: Anatomical Constraints on Preparatory Inhibition.

J Neurophysiol 2019 Feb 20. Epub 2019 Feb 20.

Psychology, UC Berkeley.

Motor-evoked potentials (MEPs), elicited by Transcranial Magnetic Stimulation (TMS) over the motor cortex, are reduced during the preparatory period in delayed response tasks. Here we examine how MEP suppression varies as a function of the anatomical organization of the motor cortex. MEPs were recorded from a left index muscle while participants prepared a hand or leg movement in Experiment 1, or prepared an eye or mouth movement in Experiment 2. Read More

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http://dx.doi.org/10.1152/jn.00711.2018DOI Listing
February 2019

Electric Field Controlled Magnetization in GaAs/AlGaAs Heterostructures-chiral Organic Molecules Hybrids.

J Phys Chem Lett 2019 Feb 20. Epub 2019 Feb 20.

We study GaAs/AlGaAs devices hosting a two-dimensional electron gas and coated with a monolayer of chiral organic molecules. We observe clear signatures of room temperature magnetism, which is induced in these systems by applying a gate voltage. We explain this phenomenon as a consequence of the spin-polarized charges that are injected into the semiconductor through the chiral molecules. Read More

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http://dx.doi.org/10.1021/acs.jpclett.9b00092DOI Listing
February 2019

Fetal iGRASP cine CMR assisting in prenatal diagnosis of complicated cardiac malformation with impact on delivery planning.

Clin Physiol Funct Imaging 2019 Feb 20. Epub 2019 Feb 20.

Lund University, Skåne University Hospital, Department of Clinical Sciences Lund, Clinical Physiology, Lund, Sweden.

Limited visualisation of the fetal heart and vessels by fetal ultrasound due to suboptimal fetal position, patient habitus and skeletal calcification may lead to missed diagnosis, overdiagnosis and parental uncertainty. Counseling and delivery planning may in those cases also be tentative. The recent fetal cardiac magnetic resonance (CMR) reconstruction method utilising tiny golden angle iGRASP (iterative Golden-angle RAdial Sparse Parallel MRI) allows for cine imaging of the fetal heart for use in clinical practice. Read More

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http://dx.doi.org/10.1111/cpf.12566DOI Listing
February 2019

Voltage-Control of Magnetism in All-Solid-State and Solid/Liquid Magnetoelectric Composites.

Adv Mater 2019 Feb 20:e1806662. Epub 2019 Feb 20.

Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.

The control of magnetism by means of low-power electric fields, rather than dissipative flowing currents, has the potential to revolutionize conventional methods of data storage and processing, sensing, and actuation. A promising strategy relies on the utilization of magnetoelectric composites to finely tune the interplay between electric and magnetic degrees of freedom at the interface of two functional materials. Albeit early works predominantly focused on the magnetoelectric coupling at solid/solid; however, recently there has been an increased interest related to the opportunities offered by liquid-gating techniques. Read More

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http://dx.doi.org/10.1002/adma.201806662DOI Listing
February 2019

Cirrhotic cardiomyopathy: the liver affects the heart.

Braz J Med Biol Res 2019 Feb 14;52(2):e7809. Epub 2019 Feb 14.

Hospital Municipal Dr. Mario Gatti, Campinas, SP, Brasil.

Cirrhotic cardiomyopathy historically has been confused as alcoholic cardiomyopathy. The key points for diagnosis of cirrhotic cardiomyopathy have been well explained, however this entity was neglected for a long time. Nowadays the diagnosis of this entity has become important because it is a factor that contributes significantly to morbidity-mortality in cirrhotic patients. Read More

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http://dx.doi.org/10.1590/1414-431X20187809DOI Listing
February 2019

Magnetic circular dichroism spectra of transition metal complexes calculated from restricted active space wavefunctions.

Phys Chem Chem Phys 2019 Feb 20. Epub 2019 Feb 20.

Department of Chemistry, University at Buffalo, State University of New York, Buffalo, NY 14260-3000, USA.

First principles multiconfigurational restricted active space (RAS) self-consistent field (SCF) or configuration interaction (CI) approaches, augmented with a treatment of spin-orbit coupling by state interaction, were used to calculate the magnetic circular dichroism (MCD) , , and/or for closed- and open-shell transition metal complexes: PdCl42-, PdBr42-, AuCl4-, AuBr4-, MnO4-, CuCl42-, CuBr42-, and Fe(CN)63-. The were determined with a sum-over-states approach. It is shown that reasonably accurate MCD spectra can be obtained directly at a RAS level or at a RAS level augmented with corrections for the dynamic correlation. Read More

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http://dx.doi.org/10.1039/c8cp07849aDOI Listing
February 2019

SR-A-Targeted Phase Transition Nanoparticles for the Detection and Treatment of Atherosclerotic Vulnerable Plaques.

ACS Appl Mater Interfaces 2019 Feb 20. Epub 2019 Feb 20.

Atherosclerosis is a major cause of sudden death and myocardial infarction, instigated by unstable plaques. Thus, the early detection of unstable plaques and corresponding treatment can improve the prognosis and reduce mortality. In this study, we describe a protocol for the preparation of nanoparticles (NPs) combined with the phase transitional material perfluorohexane (PFH) and with dextran sulfate (DS) targeting class A scavenger receptors (SR-A) for the diagnosis and treatment of atherosclerotic vulnerable plaques. Read More

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http://dx.doi.org/10.1021/acsami.8b18190DOI Listing
February 2019

Additional value of tau protein measurement in the diagnosis of Creutzfeldt-Jakob disease.

Ideggyogy Sz 2019 Jan;72(1-2):39-47

Department of Neurology, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged.

Since the definite diagnosis of Creutzfeldt-Jakob disease (CJD) can currently only be provided by autopsy, there is a special need for fine diagnostic tools in live patients to achieve accurate diagnosis as early as possible. The aim of this study was to perform a preliminary retrospective analysis on the utility of the measurement of total Tau (tTau) and some other biomarkers from the cerebrospinal fluid (CSF) of patients with rapidly progressive dementia in the diagnostic work up of CJD. Beside the assessment of relevant clinical data and the findings of electroencephalography and brain magnetic resonance imaging, the presence of 14-3-3 protein and the levels of tTau were determined by Western blot technique and enzyme-linked immunosorbent assay from the CSF of 19 patients diagnosed with rapidly progressive dementia between the period of 2004-2017 at the Department of Neurology, University of Szeged. Read More

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http://dx.doi.org/10.18071/https://doi.org/10.18071/isz.72.0039DOI Listing
January 2019

Surgical treatment of a left ventricular apical thrombus via robotic surgery.

J Card Surg 2019 Feb 20. Epub 2019 Feb 20.

Department of Cardiovascular Surgery, Health Sciences University Gülhane Training and Research Hospital, Ankara, Turkey.

Left ventriculotomy for thrombus removal is usually associated with a high incidence of cardiac arrhythmias and decreased ejection fraction. A 51-year-old male patient was admitted to the emergency department with loss of consciousness. Transthoracic echocardiography revealed a 20 × 24-mm left ventricular apical nonpedunculated thrombus with normal ejection fraction. Read More

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http://dx.doi.org/10.1111/jocs.14000DOI Listing
February 2019

Rotating magnetic particles for lab-on-chip applications - a comprehensive review.

Lab Chip 2019 Feb 20. Epub 2019 Feb 20.

Department of Applied Physics, Department of Biomedical Engineering, Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, The Netherlands.

Magnetic particles are widely used in lab-on-chip and biosensing applications, because they have a high surface-to-volume ratio, they can be actuated with magnetic fields and many biofunctionalization options are available. The most well-known actuation method is to apply a magnetic field gradient which generates a translational force on the particles and allows separation of the particles from a suspension. A more recently developed magnetic actuation method is to exert torque on magnetic particles by a rotating magnetic field. Read More

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http://dx.doi.org/10.1039/c8lc01323cDOI Listing
February 2019

Non-empirical calculation of X-ray magnetic circular dichroism in lanthanide compounds.

Chem Commun (Camb) 2019 Feb 20. Epub 2019 Feb 20.

Paul Scherrer Institute, CH-5232, Villigen PSI, Switzerland.

Affordable calculations of X-ray magnetic circular dichroism and X-ray linear dichroism spectra of lanthanide ions purely based on structural input are difficult to achieve. Here we report on the successful application of ligand-field density-functional theory to obtain an exquisite reproduction of experimental spectra. As a testbed we use TbPc2 single-molecule magnets on a flat substrate. Read More

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http://dx.doi.org/10.1039/c8cc09321kDOI Listing
February 2019

Purification of chlorogenic acid from Heijingang potatoes and evaluation of its binding properties to recombinant human serum albumin.

J Chromatogr B Analyt Technol Biomed Life Sci 2019 Feb 11;1110-1111:87-93. Epub 2019 Feb 11.

Hubei Key Laboratory of Edible Wild Plants Conservation and Utilization, Hubei Normal University, Huangshi 435002, Hubei Province, China; National Demonstration Center for Experimental Biology Education, Hubei Normal University, Huangshi 435002, Hubei Province, China.

The aim of the present study was to purify the natural chlorogenic acid (CGA) monomer from Heijingang potatoes and investigate its interaction with recombinant human serum albumin (rHSA). The potato extract (PE) was purified using macroporous resins and solvent, and the CGA monomer was subsequently isolated using semipreparative liquid chromatography (SP-LC). The purity and structure of the CGA monomer was analyzed by high-performance liquid chromatography (HPLC) and nuclear magnetic resonance (NMR). Read More

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http://dx.doi.org/10.1016/j.jchromb.2019.02.010DOI Listing
February 2019

The value of anti-JCV antibody index assessment in multiple sclerosis patients treated with natalizumab with respect to demographic, clinical and radiological findings.

Mult Scler Relat Disord 2019 Feb 14;30:187-191. Epub 2019 Feb 14.

Department of Neurology, University Hospital Brno, Czech Republic; Faculty of Medicine, Masaryk University, Brno, Czech Republic. Electronic address:

Background: Natalizumab-related progressive multifocal leukoencephalopathy (PML) is associated with the presence of anti-John Cunningham virus (JCV) antibodies. The aim of this investigation was to evaluate the long-term stability of anti-JCV antibody serum levels and their relation to various demographic, clinical and radiological characteristics in patients suffering from multiple sclerosis (MS).

Methods: Seventy-eight relapsing-remitting MS patients treated with natalizumab and evaluated for the presence of serum anti-JCV antibodies over a time period of 1-6 years (3-11 samples) were included in the study. Read More

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http://dx.doi.org/10.1016/j.msard.2019.02.019DOI Listing
February 2019

Individuals with 22q11.2 deletion syndrome show intact prediction but reduced adaptation in responses to repeated sounds: Evidence from Bayesian mapping.

Neuroimage Clin 2019 Feb 13;22:101721. Epub 2019 Feb 13.

Danish Research Centre for Magnetic Resonance, Centre for Functional and Diagnostic Imaging and Research, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark; Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; Department of Neurology, Copenhagen University Hospital Bispebjerg, Copenhagen, Denmark.

One of the most common copy number variants, the 22q11.2 microdeletion, confers an increased risk for schizophrenia. Since schizophrenia has been associated with an aberrant neural response to repeated stimuli through both reduced adaptation and prediction, we here hypothesized that this may also be the case in nonpsychotic individuals with a 22q11. Read More

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http://dx.doi.org/10.1016/j.nicl.2019.101721DOI Listing
February 2019

Preliminary results from a pilot study examining brain structure in older adult cannabis users and nonusers.

Psychiatry Res Neuroimaging 2019 Feb 10;285:58-63. Epub 2019 Feb 10.

Department of Psychology & Neuroscience, University of Colorado Boulder, 345 UCB, Boulder, CO, United States.

Exploring associations among cannabis use, brain structure, and cognitive function in older adults offers an opportunity to observe potential harm or benefit of cannabis. This pilot study assessed structural magnetic resonance imaging in older adults who were either current cannabis users (n = 28; mean age 69.8 years, 36% female) or nonusers (n = 28; mean age 66. Read More

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http://dx.doi.org/10.1016/j.pscychresns.2019.02.001DOI Listing
February 2019

A remotely steerable Janus micromotor adsorbent for the active remediation of Cs-contaminated water.

J Hazard Mater 2019 Feb 14;369:416-422. Epub 2019 Feb 14.

Decommissioning Technology Research Division, Korea Atomic Energy Research Institute, Daedeok-daero 989-111, Yuseong-gu, Daejeon, Republic of Korea. Electronic address:

We report the development of magnetically steerable self-propelled micromotors that selectively remove radioactive Cs from contaminated water. Mesoporous silica microspheres were functionalized with the highly Cs-selective copper ferrocyanide, and half of the adsorptive particle surface was then coated with ferromagnetic Ni and catalytic Pt layers to fabricate Janus micromotors. The micromotor adsorbent displayed random propulsion in an HO solution via catalytic bubble evolution from the Pt surface, and the micromotor adsorbent self-propulsion resulted in an 8-fold higher Cs removal compared to the stationary adsorbent within one hour. Read More

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http://dx.doi.org/10.1016/j.jhazmat.2019.02.054DOI Listing
February 2019

Novel nanocomposite derived from ZnO/CdS QDs embedded crosslinked chitosan: An efficient photocatalyst and effective antibacterial agent.

J Hazard Mater 2019 Feb 10;369:398-407. Epub 2019 Feb 10.

Department of Applied Chemistry, Indian Institute of Technology (ISM), Dhanbad, 826004, India. Electronic address:

A novel nanocomposite (cl-Ch-pMAc@ZnO/CdSQDs) has been developed under microwave irradiation via fabrication of ZnO/CdS quantum dots on anionically functionalized chitosan [i.e. poly (methacrylic acid) crosslinked chitosan (cl-Ch-pMAc) in the presence of diethylene glycol dimethacrylate (DEGDMA) crosslinker]. Read More

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http://dx.doi.org/10.1016/j.jhazmat.2019.02.022DOI Listing
February 2019

Evaluating reinforcement learning agents for anatomical landmark detection.

Med Image Anal 2019 Feb 14;53:156-164. Epub 2019 Feb 14.

Biomedical Image Analysis Group (BioMedIA), Imperial College London, London, UK.

Automatic detection of anatomical landmarks is an important step for a wide range of applications in medical image analysis. Manual annotation of landmarks is a tedious task and prone to observer errors. In this paper, we evaluate novel deep reinforcement learning (RL) strategies to train agents that can precisely and robustly localize target landmarks in medical scans. Read More

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http://dx.doi.org/10.1016/j.media.2019.02.007DOI Listing
February 2019

Detectability of the degree of freeze damage in meat depends on analytic-tool selection.

Meat Sci 2019 Feb 8;152:8-19. Epub 2019 Feb 8.

Faculty of Ecology and Natural Resource Management, Norwegian University of Life Sciences, 1432 Aas, Norway.

Novel freezing solutions are constantly being developed to reduce quality loss in meat production chains. However, there is limited focus on identifying the sensitive analytical tools needed to directly validate product changes that result from potential improvements in freezing technology. To benchmark analytical tools relevant to meat research and production, we froze pork samples using traditional (-25 °C, -35 °C) and cryogenic freezing (-196 °C). Read More

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http://dx.doi.org/10.1016/j.meatsci.2019.02.002DOI Listing
February 2019

Well-dispersed TiO nanoparticles anchored on FeO magnetic nanosheets for efficient arsenic removal.

J Environ Manage 2019 Feb 18;237:63-74. Epub 2019 Feb 18.

Department of Chemical & Biochemical Engineering, The College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China. Electronic address:

Magnetic iron-titanium binary oxide as an effective adsorbent for arsenic contaminant is a challenge primarily because of their bulk structure and agglomeration effect. Herein, a novel and uniform sandwich-like magnetic FeO@TiO sheets were synthesized by utilizing a facile strategy involving amorphous-to-crystalline transformation and reduction in H, to achieve dispersed anatase TiO nanoparticles with a small size of ∼8 nm anchored on FeO sheets. The resultant FeO@TiO sheets nanocomposite possessing a high specific surface area of ∼89. Read More

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http://dx.doi.org/10.1016/j.jenvman.2019.02.037DOI Listing
February 2019

Episodic reconstruction contributes to high-confidence false recognition memories in older adults: Evidence from event-related potentials.

Brain Cogn 2019 Feb 18;132:13-21. Epub 2019 Feb 18.

Center on Aging Psychology, CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; Department of Psychology, University of Chinese Academy of Sciences, Beijing, China; Magnetic Resonance Imaging Research Center, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; State Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China. Electronic address:

Older adults demonstrate greater susceptibility to high-confidence memory distortions. Cognitive processes underlying memory errors in older adults remain unclear. Here, in a categorized pictures paradigm, we used the event-related potential (ERP) to examine the electrophysiological correlates of false recognition. Read More

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http://dx.doi.org/10.1016/j.bandc.2019.02.002DOI Listing
February 2019

Is there a specific memory signature associated with Aβ-PET positivity in patients with amnestic mild cognitive impairment?

Neurobiol Aging 2019 Jan 31;77:94-103. Epub 2019 Jan 31.

Inserm, Inserm UMR-S U1237, Université de Caen-Normandie, GIP Cyceron, Caen, France; Memory and Aging Center, Department of Neurology, University of California, San Francisco, San Francisco, CA, USA. Electronic address:

Amnestic mild cognitive impairment (aMCI) is a clinical entity with various potential etiologies including but not limited to Alzheimer's disease. We examined whether a positive ([18F]Florbetapir) beta amyloid positron emission tomography scan, supporting underlying Alzheimer's disease pathophysiology, was associated with specific memory deficits in 48 patients with aMCI (33 beta amyloid positive, 15 beta amyloid negative). Memory was evaluated using an autobiographical fluency task and a word-list learning task with 2 different encoding types (shallow/incidental versus deep/intentional). Read More

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http://dx.doi.org/10.1016/j.neurobiolaging.2019.01.017DOI Listing
January 2019

Multifunctional magnetic sphere-MoS@Au hybrid for surface-enhanced Raman scattering detection and visible light photo-Fenton degradation of aromatic dyes.

Chemosphere 2019 Feb 14;223:465-473. Epub 2019 Feb 14.

College of Chemistry and Chemical Engineering, Jiangxi Normal University, China. Electronic address:

A ternary hybrid, MNPs-MoS@Au, composed of gold nanoparticles (AuNPs) grown on a magnetic sphere (MNPs)-MoS microflower composite (MNPs-MoS) was proposed for surface-enhanced Raman scattering (SERS) detection and visible-light photo-Fenton degradation of aromatic dyes. The hybrid was prepared by sequential solvothermal growth of MNPs and MoS, and electroless deposition of AuNPs. A comparison of results revealed that the synergy among these components endowed the hybrid with a much higher SERS enhancement ability than MNPs, or MNPs@MoS. Read More

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http://dx.doi.org/10.1016/j.chemosphere.2019.02.073DOI Listing
February 2019

A double-blind pilot dosing study of low field magnetic stimulation (LFMS) for treatment-resistant depression (TRD).

J Affect Disord 2019 Feb 14;249:286-293. Epub 2019 Feb 14.

Department of Psychiatry, Weill Cornell Medical College-New York Presbyterian Hospital, 525 East 68th Street, New York, NY 10065, USA; Institute of Geriatric Psychiatry, Weill Cornell Medical College-New York Presbyterian Hospital, 525 East 68th Street, New York, NY 10065, USA.

Background: Low field magnetic stimulation is a potentially rapid-acting treatment for depression with mood-enhancing effects in as little as one 20-min session. The most convincing data for LFMS has come from treating bipolar depression. We examined whether LFMS also has rapid mood-enhancing effects in treatment-resistant major depressive disorder, and whether these effects are dose-dependent. Read More

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http://dx.doi.org/10.1016/j.jad.2019.02.039DOI Listing
February 2019

Cardiac Magnetic Resonance and Cardio-Oncology: Does T Signal the End of Anthracycline Cardiotoxicity?

J Am Coll Cardiol 2019 Feb;73(7):792-794

Cardiology Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York; Weill Cornell Medical College, New York, New York.

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http://dx.doi.org/10.1016/j.jacc.2018.11.045DOI Listing
February 2019

Serial Magnetic Resonance Imaging to Identify Early Stages of Anthracycline-Induced Cardiotoxicity.

J Am Coll Cardiol 2019 Feb;73(7):779-791

Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain; Cardiology Department, IIS-Fundación Jiménez Díaz Hospital, Madrid, Spain. Electronic address:

Background: Anthracycline-induced cardiotoxicity is a major clinical problem, and early cardiotoxicity markers are needed.

Objectives: The purpose of this study was to identify early doxorubicin-induced cardiotoxicity by serial multiparametric cardiac magnetic resonance (CMR) and its pathological correlates in a large animal model.

Methods: Twenty pigs were included. Read More

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http://dx.doi.org/10.1016/j.jacc.2018.11.046DOI Listing
February 2019

Double Filtration During Carotid Artery Stenting Using a Novel Post-Dilation Balloon With Integrated Embolic Protection.

JACC Cardiovasc Interv 2019 Feb;12(4):395-403

Department of Angiology, Universitats Herzzentrum Freiburg-Bad Krozingen, Bad Krozingen, Germany.

Objectives: This study evaluated the safety and performance of the Paladin System, a novel angioplasty balloon with an integrated embolic protection filter designed to increase embolic protection during post-dilation.

Background: The risk of major adverse events during carotid artery stenting (CAS) is equivalent to carotid endarterectomy. However, the risk of minor stroke remains higher with CAS. Read More

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http://dx.doi.org/10.1016/j.jcin.2018.11.039DOI Listing
February 2019

Hierarchical Ag-SiO@FeO magnetic composites for elemental mercury removal from non-ferrous metal smelting flue gas.

J Environ Sci (China) 2019 May 1;79:111-120. Epub 2018 Dec 1.

College of Resources and Environmental Science, Ningxia University, Yinchuan 750021, China.

Hierarchical Ag-SiO@FeO magnetic composites were selected for elemental mercury (Hg) removal from non-ferrous metal smelting flue gas in this study. Results showed that the hierarchical Ag-SiO@FeO magnetic composites had favorable Hg removal ability at low temperature. Moreover, the adsorption capacity of hierarchical magnetic composite is much larger than that of pure FeO and SiO@FeO. Read More

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http://dx.doi.org/10.1016/j.jes.2018.11.014DOI Listing

The effects of empagliflozin treatment on cardiac function and structure in patients with type 2 diabetes - a cardiac MR study.

Intern Med J 2019 Feb 19. Epub 2019 Feb 19.

Baker Heart and Diabetes Institute.

Background: The effects of empagliflozin on cardiac structure and function are not known AIMS: To examine the changes in cardiac structure and function following the addition of empagliflozin in patients with Type 2 (T2D) diabetes using cardiac magnetic resonance (MR) imaging.

Methods: 20 patients attending a specialist diabetes service recommended for treatment with empagliflozin, and 8 control patient with T2D on stable glucose lowering therapy were recruited for cardiac imaging. Participants underwent cardiac MR scans at baseline and 6 months. Read More

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http://dx.doi.org/10.1111/imj.14260DOI Listing
February 2019

A Main-Group Element Radical Based One-Dimensional Magnetic Chain.

Angew Chem Int Ed Engl 2019 Feb 19. Epub 2019 Feb 19.

Nanjing University, Chemistry, Xianlin Ave 163, 210023, Nanjing, CHINA.

The first main-group element radical based one-dimensional magnetic chain (1K)n was realized by one-electron reduction of the pyridinyl functionalized borane 1 with elemental potassium in THF in the absence of 18-crown-6 (18-c-6). The electron spin density of (1K)n mainly resides at the boron centers with a considerable contribution from central benzene and pyridine moieties. The spin centers exhibit an antiferromagnetic interaction as demonstrated by magnetic measurements and theoretical calculations. Read More

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http://dx.doi.org/10.1002/anie.201901177DOI Listing
February 2019

Comorbidity of reading disabilities and ADHD: Structural and functional brain characteristics.

Hum Brain Mapp 2019 Feb 19. Epub 2019 Feb 19.

Laboratories of Cognitive Neuroscience, Division of Developmental Medicine, Department of Medicine, Boston Children's Hospital, Boston, Massachusetts.

Reading disabilities (RD) and attention-deficit/hyperactivity disorder (ADHD) are two of the most common developmental disorders. RD and ADHD frequently co-occur, which raises questions about how the disorders interact and to what extent they can be differentiated. To date, the underlying neural mechanisms leading to RD-ADHD comorbidity (COM) are not understood. Read More

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http://dx.doi.org/10.1002/hbm.24552DOI Listing
February 2019

Sesquiterpenes with new carbon skeletons from the basidiomycete Phlebia tremellosa.

J Nat Med 2019 Feb 19. Epub 2019 Feb 19.

Laboratory of Medicinal Resources, School of Pharmacy, Aichi Gakuin University, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya, Aichi, 464-8650, Japan.

Three new sesquiterpenes, phlebidiol, phlebioic acid, and phlebiolide, as well as the known compound tremetriol, were isolated from cultures of the basidiomycete Phlebia tremellosa. The structures of all isolated compounds were established by extensive spectroscopic analyses, including those involving extensive two-dimensional nuclear magnetic resonance. The absolute configurations of phlebidiol, phlebioic acid, and phlebiolide were determined by comparisons of experimental and calculated electronic circular dichroism spectra. Read More

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http://dx.doi.org/10.1007/s11418-019-01286-8DOI Listing
February 2019

Investigation on synthesis of ion-imprinted mesoporous adsorbents by using ultrasound- and microwave-assisted preparation and their dynamic adsorption properties on heavy metals.

Environ Sci Pollut Res Int 2019 Feb 20. Epub 2019 Feb 20.

School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, 221116, People's Republic of China.

Removal of the heavy metal ions in aqueous solution is an important technology for waste water treatment. The effects of using ultrasonic and microwave on synthesizing Pb, Zn, and Cu imprinted mesoporous adsorbents (Pb-IMA-UM, Zn-IMA-UM, and Cu-IMA-UM) and their dynamic adsorption properties were studied. The microstructure and composition of the ion-imprinted mesoporous adsorbents were discussed in detail by TEM, FTIR, N adsorption-desorption, XRD, and EDS. Read More

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http://dx.doi.org/10.1007/s11356-019-04436-3DOI Listing
February 2019

Mini-review: end-points for drug treatment in NASH.

Authors:
Leon A Adams

Hepatol Int 2019 Feb 19. Epub 2019 Feb 19.

M503, Medical School, QEII Medical Centre, University of Western Australia, Nedlands, Perth, WA, 6009, Australia.

Non-alcoholic steatohepatitis (NASH) is an increasingly common cause of cirrhosis, hepatocellular carcinoma, and liver-related death (LRD). Consequently, there is a critical need for effective drug therapy that improves clinically relevant end-points. Hepatic steatosis assessed by magnetic resonance imaging-proton density fat fraction is increasingly used in the early phase trials examining drugs with anti-steatotic effects. Read More

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http://dx.doi.org/10.1007/s12072-019-09935-6DOI Listing
February 2019

Quantitative magnetic resonance evaluation of the trigeminal nerve in familial dysautonomia.

Clin Auton Res 2019 Feb 19. Epub 2019 Feb 19.

Department of Radiology, New York University School of Medicine, New York, NY, 10016, USA.

Purpose: Familial dysautonomia (FD) is a rare autosomal recessive disease that affects the development of sensory and autonomic neurons, including those in the cranial nerves. We aimed to determine whether conventional brain magnetic resonance imaging (MRI) could detect morphologic changes in the trigeminal nerves of these patients.

Methods: Cross-sectional analysis of brain MRI of patients with genetically confirmed FD and age- and sex-matched controls. Read More

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http://dx.doi.org/10.1007/s10286-019-00593-0DOI Listing
February 2019

Correction to: Ultrashort time-to-echo quantitative magnetic resonance imaging of the triangular fibrocartilage: differences in position.

Eur Radiol 2019 Feb 19. Epub 2019 Feb 19.

Department of Radiology, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan.

The original version of this article, published on 03 September 2018, unfortunately contained a mistake. Read More

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http://dx.doi.org/10.1007/s00330-019-06031-zDOI Listing
February 2019

Early Embolization After Carotid Artery Stenting with Mesh-Covered Stent: Role of Diffusion-Weighted Magnetic Resonance Imaging as Pre-procedural Predictor and Discriminant Between Intra- and Post-procedural Events.

Cardiovasc Intervent Radiol 2019 Feb 19. Epub 2019 Feb 19.

Department of Surgical Sciences - Radiology Unit, University of Turin, Turin, Italy.

Objectives: To evaluate the incidence and the time of onset of early micro-embolism after CAS (carotid artery stenting) with two different mesh-covered stents and to assess the role of DW-MRI (Diffusion-weighted magnetic resonance imaging) in their prediction.

Methods: Single-institution prospective study including 50 patients (33 male, median age 74 years) who underwent CAS with Roadsaver or CGuard™. All patients with primary stenosis (37/50, 74%) had carotid plaque DW-MRI pre-procedure, with both qualitative evaluation of the hyperintensity and ADC (apparent diffusion coefficient) measurement of the plaque. Read More

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http://dx.doi.org/10.1007/s00270-019-02173-1DOI Listing
February 2019

A framework for cortical laminar composition analysis using low-resolution T1 MRI images.

Brain Struct Funct 2019 Feb 19. Epub 2019 Feb 19.

Department of Neurobiology, Faculty of Life Sciences, Tel Aviv University, Ramat Aviv, 69978, Tel Aviv, Israel.

The layer composition of the cerebral cortex represents a unique anatomical fingerprint of brain development, function, connectivity, and pathology. Historically, the cortical layers were investigated solely ex-vivo using histological means, but recent magnetic resonance imaging (MRI) studies suggest that T1 relaxation images can be utilized to separate the layers. Despite technological advancements in the field of high-resolution MRI, accurate estimation of whole-brain cortical laminar composition has remained limited due to partial volume effects, leaving some layers far beyond the image resolution. Read More

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http://dx.doi.org/10.1007/s00429-019-01848-2DOI Listing
February 2019

An undescribed venous pathway intervening between the olfactory fossa and nasal vestibule.

Surg Radiol Anat 2019 Feb 19. Epub 2019 Feb 19.

Department of Neurological Surgery, Juntendo University Urayasu Hospital, 2-1-1, Urayasu, Chiba, 279-0021, Japan.

Purpose: A curvilinear pathway intervening between the olfactory fossa and nasal vestibule has not been well documented. Therefore, the aim of this study was to examine its structure using magnetic resonance imaging (MRI).

Methods: In total, 84 patients underwent thin-sliced, contrast MRI. Read More

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http://dx.doi.org/10.1007/s00276-019-02208-9DOI Listing
February 2019

Diffusion tensor imaging of the kidney in healthy controls and in children and young adults with autosomal recessive polycystic kidney disease.

Abdom Radiol (NY) 2019 Feb 19. Epub 2019 Feb 19.

Division of Nephrology, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, PA, USA.

Objective: To compare diffusion tensor imaging (DTI) of the kidneys and its derived parameters in children with autosomal recessive polycystic kidney disease (ARPKD) versus healthy controls.

Methods: In a prospective IRB-approved study, we evaluated the use of DTI to compare kidney parenchyma FA values in healthy controls (age-matched children with no history of renal disease) versus patients with ARPKD. A 20-direction DTI with b-values of b = 0 s/mm and b = 400 s/mm was used to acquire data in coronal direction using a fat-suppressed spin-echo echo-planar sequence. Read More

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http://dx.doi.org/10.1007/s00261-019-01933-4DOI Listing
February 2019
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