Results 61 to 70 of about 11,693 (198)

Evaluation of Brain Microstructural Alterations in Preschool Autism Spectrum Disorder: A Voxel‐Wise Multimodal MRI Study

open access: yesJournal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Autism Spectrum Disorder (ASD) presents with early neurodevelopmental alterations in preschool children, yet comprehensive characterization using multimodal quantitative MRI remains limited in this age group. Purpose To investigate voxel‐wise brain microstructural differences in preschool ASD through integrated analysis of cerebral ...
Changhao Wang   +7 more
wiley   +1 more source

Instant tissue field and magnetic susceptibility mapping from MRI raw phase using Laplacian enhanced deep neural networks

open access: yesNeuroImage, 2022
Quantitative susceptibility mapping (QSM) is an MRI post-processing technique that produces spatially resolved magnetic susceptibility maps from phase data.
Yang Gao   +10 more
doaj   +1 more source

In Vivo Quantitative Susceptibility Mapping (QSM) in Alzheimer's Disease

open access: yesPLoS ONE, 2013
This study explores the magnetostatic properties of the Alzheimer's disease brain using a recently proposed, magnetic resonance imaging, postprocessed contrast mechanism. Quantitative susceptibility mapping (QSM) has the potential to monitor in vivo iron levels by reconstructing magnetic susceptibility sources from field perturbations.
Acosta-Cabronero, Julio   +5 more
openaire   +6 more sources

Mapping Intracellular Volume Fraction With Susceptibility Source Decomposition as a Marker for Tissue Cellularity

open access: yesJournal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Pathophysiological changes affect tissue cell composition and density. For example, neurodegenerative disorders and brain tumors are associated with cell loss and abnormal accumulation, respectively. In these scenarios, if monitored and tracked, tissue cellularity might be used to inform clinical diagnosis and management. Purpose To
Giulia Debiasi   +7 more
wiley   +1 more source

On the impossibility of temperature extraction from heavy ion induced particle spectra [PDF]

open access: yes, 1995
Spectra of various particle species have been calculated with the Quantum Molecular Dynamics (QMD) model for very central collisions of Au+Au. They are compatible with the idea of a fully stopped thermal source which exhibits a transversal expansion ...
Claesson   +18 more
core   +2 more sources

Exploring linearity of deep neural network trained QSM: QSMnet+

open access: yesNeuroImage, 2020
Recently, deep neural network-powered quantitative susceptibility mapping (QSM), QSMnet, successfully performed ill-conditioned dipole inversion in QSM and generated high-quality susceptibility maps. In this paper, the network, which was trained by healthy volunteer data, is evaluated for hemorrhagic lesions that have substantially higher ...
Woojin Jung   +7 more
openaire   +3 more sources

Clinical Validation of a Fast MRI Method to Evaluate Brain Vascular and Parenchymal Abnormalities in Sturge‐Weber Syndrome

open access: yesJournal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Sturge‐Weber syndrome (SWS) is a rare neurocutaneous disorder associated with venous capillary malformations, atrophy, and calcifications. Longitudinal imaging is limited by risks of sedation and gadolinium exposure in children.
Scotty G. McKay   +5 more
wiley   +1 more source

Quantitative Susceptibility Mapping-Based Microscopy of Magnetic Resonance Venography (QSM-mMRV) for In Vivo Morphologically and Functionally Assessing Cerebromicrovasculature in Rat Stroke Model.

open access: yesPLoS ONE, 2016
Abnormal cerebral oxygenation and vessel structure is a crucial feature of stroke. An imaging method with structural and functional information is necessary for diagnosis of stroke.
Meng-Chi Hsieh   +5 more
doaj   +1 more source

The Dichotomy of Conjunctive Queries on Probabilistic Structures

open access: yes, 2007
We show that for every conjunctive query, the complexity of evaluating it on a probabilistic database is either \PTIME or #\P-complete, and we give an algorithm for deciding whether a given conjunctive query is \PTIME or #\P-complete.
Dalvi, Nilesh, Suciu, Dan
core   +4 more sources

Learning in radiation oncology: 12‐month experience with a new incident learning system

open access: yesJournal of Medical Radiation Sciences, Volume 72, Issue 1, Page 63-73, March 2025.
Introduction of an incident learning incident (ILS) was shown to have had a positive impact on reporting and safety culture within a local health district (LHD). Survey findings correlate with existing literature that ILSs are effective tools for improving patient safety and departmental safety facilitating quality improvement.
Krystle Crouch   +4 more
wiley   +1 more source

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