Results 1 to 10 of about 337,692 (304)
Usefulness of respiratory-gated PET acquisition during delayed 18F-FDG PET/CT scanning for patients with liver metastases [PDF]
Asia Oceania Journal of Nuclear Medicine and Biology, 2021 Objective(s): To assess respiratory-gated (RG) positron emission tomography (PET) acquisition for patients with liver metastases during delayed PET/computed tomography (CT) scanning with fluorine-18-fluorodeoxyglucose (18F-FDG).Methods: Nineteen patients
Shota Watanabe +6 more
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The Vortex Surface in a Three-Body Quantum System
Atoms, 2023 Vortices are structures known in our daily lives and observed in a wide variety of systems, from cosmic to microscopic scales. Relatively recent studies showed that vortices could also appear in simple quantum systems.
Tamara A. Guarda +2 more
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Preliminary study on characteristic X-ray yields of the thick-targe impacted by low-energy positron
He jishu, 2021 BackgroundX-ray emission from solid samples exposed to positron beams in the low-energy region is the basis of some material analysis techniques.PurposeThis study aims to measure the K-shell characteristic X-ray yields of Ti (Z=22) target collided by 10 ...
TIAN Lixia +3 more
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Current imaging techniques in large vessel vasculitis
Научно-практическая ревматология, 2022 Instrumental imaging modalities play an important role in the diagnosis, evaluation of treatment efficacy and early detection of recurrences in patients with large vessel systemic vasculitis (SV). There’s no currently available universal imaging modality
T. V. Beketova +2 more
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Deep Minimum and a Vortex for Positronium Formation in Low-Energy Positron-Helium Collisions
Atoms, 2021 We find a zero in the positronium formation scattering amplitude and a deep minimum in the logarithm of the corresponding differential cross section for positron–helium collisions for an energy just above the positronium formation threshold ...
Albandari W. Alrowaily +2 more
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Erdheim-Chester Disease: Utility of 18F-FDG Positron Emission Tomography [PDF]
Journal of Clinical and Diagnostic Research, 2018 Erdheim-Chester Disease (ECD) is a rare non Langerhans cell histiocytosis of unknown origin with multiorgan involvement. We report a case of a man who presented to us with haematuria, asthenia, fever, nausea and malleolar oedema.
Angelina Cistaro +4 more
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Atoms, 2021 Triply differential data are presented for the 200 eV positron and electron impact ionization of argon. Six electron emission energies between 2.6 and 19 eV, and for scattering angles of 2, 3, and 4 degrees cover a momentum transfer range of 0.16 to 0.31
R. D. DuBois, O. G. de Lucio
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On the Nature of the Positronic Bond [PDF]
ChemPhysChem, 2019 AbstractRecently it has been proposed that the positron, the anti‐particle analog of the electron, is capable of forming an anti‐matter bond in a composite system consists of two hydride anions and a positron [Angew. Chem. Int. Ed. 57, 8859–8864 (2018)].
Mohammad Goli, Shant Shahbazian
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Frontiers in Physics, 2023 Scattering phase shifts and annihilation rates for low-energy positrons interacting with noble gas atoms are calculated ab initio using many-body theory implemented in the Gaussian-orbital code EXCITON+.
J. Hofierka +5 more
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Universe, 2020 We investigated the effects that occur during the circulation of ultrarelativistic electrons and positrons in the field of an X-ray pulsar. A resonant process in annihilation and the subsequent production of the electron–positron pairs were studied ...
Dmitriy V. Doroshenko +2 more
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