Results 1 to 10 of about 1,255,353 (249)

Stochastic resonance [PDF]

open access: yesReviews of Modern Physics, 1998
n ...
GAMMAITONI, Luca   +3 more
openaire   +3 more sources

Lowering the thermal noise barrier in functional brain mapping with magnetic resonance imaging

open access: yesNature Communications, 2021
The signal-to-noise ratio is a key consideration when selecting a magnetic resonance imaging protocol. Thermal noise is major issue, especially in high resolution functional images.
Luca Vizioli   +6 more
doaj   +1 more source

Plaque Characteristics in Young Adults With Symptomatic Intracranial Atherosclerotic Stenosis: A Preliminary Study

open access: yesFrontiers in Neurology, 2022
PurposeTo determine how intracranial vascular wall and atherosclerosis plaque characteristics differ between young and old adults with sICAS.MethodsEighty-four consecutive patients with sICAS who underwent high-resolution magnetic resonance imaging ...
Ling Li   +10 more
doaj   +1 more source

Correction to: Diagnostic performance of semi-quantitative and quantitative stress CMR perfusion analysis: a meta-analysis

open access: yesJournal of Cardiovascular Magnetic Resonance, 2018
In the original publication of this article there was an error in Figures 8, 9, 10 and 11. During typesetting the Figures 8, 9, 10 and 11 have been incorrectly swapped.
Journal of Cardiovascular Magnetic Resonance
doaj   +1 more source

Resonant leptogenesis [PDF]

open access: yesNuclear Physics B, 2004
We study the scenario of thermal leptogenesis in which the leptonic asymmetries are resonantly enhanced through the mixing of nearly degenerate heavy Majorana neutrinos that have mass differences comparable to their decay widths. Field-theoretic issues arising from the proper subtraction of real intermediate states from the lepton-number-violating ...
Pilaftsis, Apostolos   +1 more
openaire   +2 more sources

Resonances of rectangular resonators [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1981
We have used variational methods based on the work of Holland and Eernisse to predict the resonant frequencies of rectangular resonators for use in acoustic transducer arrays. We have predicted both the open and short circuited resonances and have compared the theoretical results obtained with a large number of experiments carried out on such ...
P. A. Bennett, G. S. Kino
openaire   +1 more source

A phantom based laser marking workflow to visually assess geometric image distortion in magnetic resonance guided radiotherapy

open access: yesPhysics and Imaging in Radiation Oncology, 2021
Magnetic resonance (MR)-only workflows require quality assurance due to potential dosimetric impacts of using geometry distorted MR images in radiotherapy planning.
Matthias Drobnitzky   +2 more
doaj   +1 more source

Altered Cerebro-Cerebellar Effective Connectivity in New-Onset Juvenile Myoclonic Epilepsy

open access: yesBrain Sciences, 2022
(1) Objective: Resting-state fMRI studies have indicated that juvenile myoclonic epilepsy (JME) could cause widespread functional connectivity disruptions between the cerebrum and cerebellum.
Laiyang Ma   +9 more
doaj   +1 more source

Static and dynamic changes of intrinsic brain local connectivity in internet gaming disorder

open access: yesBMC Psychiatry, 2023
Background Studies have revealed that intrinsic neural activity varies over time. However, the temporal variability of brain local connectivity in internet gaming disorder (IGD) remains unknown. The purpose of this study was to explore the alterations of
Xiaoyu Niu   +10 more
doaj   +1 more source

The role of magnetic resonance imaging in assessing venous vascular abnormalities in the head and neck: a demonstration of cerebrospinal venous insufficiency in a subset of multiple sclerosis patients

open access: yesVeins and Lymphatics, 2015
The study of chronic cerebrospinal venous insufficiency (CCSVI) and its impact on the development and progression of multiple sclerosis (MS) remains controversial.
E. Mark Haacke   +4 more
doaj   +1 more source

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