Results 51 to 60 of about 260,823 (197)

Polarization and Forward Scattering Effects in Low Energy Positron Collisions with H2

open access: yesHydrogen
Positron physical-chemistry has been one important focus of scientific investigation of the last decades, however their low energy scattering by atoms and molecules still offers many questions to be answered, as the low angle scattering effects on the ...
Wagner Tenfen   +4 more
doaj   +1 more source

Collision Kinematics for Fast Positron Impact Ionization of Argon

open access: yesAtoms
Classical trajectory Monte Carlo calculations for 1 keV positron impact ionization of argon are presented. A combination of energy-weighted triple differential cross-sections is shown to provide good to excellent agreement compared with experimental data,
Robert D. DuBois, Károly Tőkési
doaj   +1 more source

Positron emission tomography

open access: yesMethods, 2002
Positron Emission Tomography (PET) is a method for determining biochemical and physiological processes in vivo in a quantitative way by using radiopharmaceuticals labelled with positron emitting radionuclides as C-11, N-13, O-15 and F-18 and by measuring the annihilation radiation using a coincidence technique. This includes also the measurement of the
Aren van Waarde, Anne M. J. Paans
openaire   +4 more sources

Imaging plasma docosahexaenoic acid (dha) incorporation into the brain in vivo, as a biomarker of brain DHA: Metabolism and neurotransmission

open access: yesOléagineux, Corps gras, Lipides, 2011
Docosahexaenoic acid (DHA) is critical for normal brain structure and function, and its brain concentration depends on dietary DHA content and hepatic conversion from its dietary derived n-3 precursor, a-linolenic acid (α-LNA).
Rapoport Stanley I.   +2 more
doaj   +1 more source

On the formation of trappable antihydrogen

open access: yesNew Journal of Physics, 2018
The formation of antihydrogen atoms from antiprotons injected into a positron plasma is simulated, focussing on the fraction that fulfil the conditions necessary for confinement of anti-atoms in a magnetic minimum trap.
S Jonsell, M Charlton
doaj   +1 more source

Perfusion CT and PET with 18F–FDG and 18F–FCh in the complex diagnosis of hepatocellular carcinoma

open access: yesEuropean Journal of Hybrid Imaging, 2017
Background The purpose of the study to evaluate possibilities of CT-perfusion and PET methods with 18F–FDG and 18F–fluorocholine in the complex diagnosis of hepatocellular carcinoma.
P. E. Tulin   +6 more
doaj   +1 more source

Diagnostic role and prognostic impact of positron emission tomography/computed tomography in patients treated for uterine corpus cancer [PDF]

open access: yesSrpski Arhiv za Celokupno Lekarstvo
Introduction/Objective. The goal of our research was to evaluate diagnostic and prognostic role of positron emission tomography/computed tomography (PET-CT) in patients previously treated for uterine cancer and compare it to conventional imaging methods (
Stojiljković Milica   +7 more
doaj   +1 more source

Polarised Positrons for the ILC

open access: yes, 2007
Presented at the XXXI International Conference of Theoretical Physics, "Matter to the Deepest", Ustron, Poland, September 5--11 ...
openaire   +4 more sources

A case of crossed cerebellar diaschisis on follow-up positron emission tomography/computed tomography with (18F) fluoro-D-glucose after treatment for glioblastoma

open access: yesWorld Journal of Nuclear Medicine, 2019
Crossed cerebellar diaschisis (CCD) represents the reduction of blood flow, metabolism, and oxygen consumption in the cerebellar hemisphere contralateral to a cerebral focal lesion.
Dimitrios Priftakis   +2 more
doaj   +1 more source

The First Application of Positron Emission Tomography/ Magnetic Resonance Imaging in Russia

open access: yesВестник рентгенологии и радиологии, 2019
PET/MRI is a new hybrid imaging technique that involves all achievements of modern magnetic resonance imaging (MRI) and positron emission tomography (PET).
A. S. Chaban   +2 more
doaj   +1 more source

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