Results 101 to 110 of about 452,519 (325)

Transient Antiskyrmion‐Mediated Topological Transitions in Isotropic Magnets

open access: yesAdvanced Science, EarlyView.
A transient antiskyrmion‐mediated pathway that drives repeated stripe‐to‐skyrmion transitions is revealed, producing a net increase in topological charge in isotropic Dzyaloshinskii–Moriya interaction films. Experiments and simulations identify the antiskyrmion as a metastable excitation, enabling stochastic bitstream generation for probabilistic ...
Bingqian Dai   +18 more
wiley   +1 more source

Nuclear neurotransmitter molecular imaging of autism spectrum disorder

open access: yesAIMS Molecular Science, 2019
Autism spectrum disorder (ASD) is a group of developmental disabilities characterized by marked deficits in social communication and interaction, including limited and repetitive patterns of behavior.
Alveena Batool Syed   +1 more
doaj   +1 more source

Channeling of Positrons through Periodically Bent Crystals: on Feasibility of Crystalline Undulator and Gamma-Laser

open access: yes, 2004
The electromagnetic radiation generated by ultra-relativistic positrons channelling in a crystalline undulator is discussed. The crystalline undulator is a crystal whose planes are bent periodically with the amplitude much larger than the interplanar ...
A. V. KOROL   +52 more
core   +1 more source

Early Detection of Cell Death Using Transmembrane Water Exchange Magnetic Resonance Imaging

open access: yesAdvanced Science, EarlyView.
Cell death is important in both the development and treatment of cancer. In this study, it is demonstrated for the first time that a specific measurement of the transmembrane water exchange rate using magnetic resonance imaging can be used as an early marker of cell death in mammalian cells, in animals and in human patients. Abstract Cell death plays a
Athanasia Kaika   +22 more
wiley   +1 more source

Prognostic value of subventricular zone involvement in relation to tumor volumes defined by fused MRI and O-(2-[18F]fluoroethyl)-L-tyrosine (FET) PET imaging in glioblastoma multiforme

open access: yesRadiation Oncology, 2019
Background Subventricular zone (SVZ) involvement is associated with a dismal prognosis in patients with glioblastoma multiforme (GBM). Dual-time point (dtp) O-(2-[18F]fluoroethyl)-L-tyrosine (FET) PET/CT (PET) may be a time- and cost-effective ...
Maciej Harat   +2 more
doaj   +1 more source

Phenomenological consequences of a hypothetical light neutral particle in heavy ion collisions [PDF]

open access: yes, 2006
We discuss the possibility that the line structure observed in the spectrum of the positrons produced in heavy ion collisions is due to the decay of a new neutral elementary particle.
Greiner, Walter   +3 more
core  

Early Detection of Chemotherapy‐Induced Glucose Metabolic Alterations in Bladder Carcinoma Using Deuterium (2H) Metabolic Imaging: in Vitro and in Vivo Assessments

open access: yesAdvanced Science, EarlyView.
This study presents the first application of deuterium metabolic imaging (DMI) for assessing therapeutic response in bladder cancer. Employing [2,3,4,6,6′‐2H5]‐D‐glucose, DMI successfully identified chemotherapy‐induced suppression of glycolysis both in vitro and in vivo.
Lingmin Kong   +15 more
wiley   +1 more source

Morphological and functional alterations in type 2 diabetes pancreata assessed with MRI-based metrics and [18F]FP-(+)-DTBZ PET

open access: yesFrontiers in Endocrinology
ObjectiveTo determine if combining PET-derived beta-cell mass (BCM) estimates with MRI-based morphology metrics improves the prediction of beta-cell functional mass in type 2 diabetes (T2D).MethodsWe performed a retrospective analysis of 40 participants ...
Seyed Faraz Nejati   +4 more
doaj   +1 more source

Superiority of 18F-FNa PET/CT for Detecting Bone Metastases in Comparison with Other Diagnostic Imaging Modalities

open access: yesActa Médica Portuguesa, 2017
Introduction: The 18F-NaF positron emission tomography/computed tomography is being considered as an excellent imaging modality for bone metastases detection. This ability was compared with other imaging techniques.
Paula Lapa   +5 more
doaj   +1 more source

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