Neuroimaging

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Article Neurosciences

Imaging of Childhood Cerebral Vasculitis

Sheng-Che Hung, Carolina Guimaraes

NEUROIMAGING CLINICS OF NORTH AMERICA (2024)

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Article Neurosciences

Imaging of Drug-Related Vasculopathy

Paulo Puac-Polanco, Alex Rovira, Lubdha M. Shah, Richard H. Wiggins, Francisco Rivas Rodriguez, Carlos Torres

Summary: Cocaine-induced CNS vasculitis and midline destructive lesion, as well as reversible vasoconstriction syndrome triggered by substance abuse, are all important conditions that are associated with drugs and their risk factors.

NEUROIMAGING CLINICS OF NORTH AMERICA (2024)

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Article Neurosciences

Imaging of Amyloid-beta- related Arteritis

Aaron Bangad, Mehdi Abbasi, Sam Payabvash, Adam de Havenon

NEUROIMAGING CLINICS OF NORTH AMERICA (2024)

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Article Neurosciences

Infectious and Postinfectious Vasculopathies

Christina M. Marra

Summary: Stroke can be a complication of CNS infections, especially caused by VZV and T pallidum. Treatment with adjunctive dexamethasone for acute pneumococcal meningitis is recommended, but it may lead to the emergence of DCV syndrome.

NEUROIMAGING CLINICS OF NORTH AMERICA (2024)

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Article Neurosciences

Neuroimaging of Infectious Vasculopathy

Renato Hoffmann Nunes, Diogo Goulart Correa, Felipe Torres Pacheco, Ana Paula Alves Fonseca, Luiz Celso Hygino da Cruz Jr, Antonio Jose da Rocha

Summary: Vasculopathy is a significant consequence of various infections, and early recognition is essential as many of these diseases have poor outcomes if left untreated. Neuroimaging techniques such as MRI, CTA, and MRA can be used to visualize the complications associated with infectious vasculopathy, while high-resolution intracranial vessel wall imaging can directly assess the presence of vasculitis.

NEUROIMAGING CLINICS OF NORTH AMERICA (2024)

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Article Neurosciences

Imaging of Small Artery Vasculitis

Omar Hamam, Samuel C. Cartmell, Javier M. Romero

NEUROIMAGING CLINICS OF NORTH AMERICA (2024)

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Article Neurosciences

Treatment of Primary Angiitis of the Central Nervous System

Alison M. Bays

NEUROIMAGING CLINICS OF NORTH AMERICA (2024)

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Article Neurosciences

Overview of Vasculitides in Adults

Manish K. Saha

NEUROIMAGING CLINICS OF NORTH AMERICA (2024)

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Article Neurosciences

Pathology of Primary Angiitis of the Central Nervous System

Selima Siala, Nabil Rahoui, Benjamin Cho, Carlos A. Zamora

NEUROIMAGING CLINICS OF NORTH AMERICA (2024)

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Article Neurosciences

Usefulness of Different Imaging Methods in the Diagnosis of Cerebral Vasculopathy

Carlos A. Zamora, Mahmud Mossa-Basha, Mauricio Castillo

Summary: Assessment of cerebral vasculopathies can be challenging, but a comprehensive understanding of different imaging methods can facilitate the process. There are various angiographic techniques with unique advantages and disadvantages, such as bolus-based methods that enhance arterial depiction and non-contrast techniques that show high-resolution arteries. MRI can assess vessel wall pathology and aid in diagnosing vasculitis and non-inflammatory vasculopathies.

NEUROIMAGING CLINICS OF NORTH AMERICA (2024)

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Article Neurosciences

Solving large-scale MEG/EEG source localisation and functional connectivity problems simultaneously using state-space models

Jose Sanchez-Bornot, Roberto C. Sotero, J. A. Scott Kelso, Ozguer Simsek, Damien Coyle

Summary: This study proposes a multi-penalized state-space model for analyzing unobserved dynamics, using a data-driven regularization method. Novel algorithms are developed to solve the model, and a cross-validation method is introduced to evaluate regularization parameters. The effectiveness of this method is validated through simulations and real data analysis, enabling a more accurate exploration of cognitive brain functions.

NEUROIMAGE (2024)

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Article Clinical Neurology

Neuromuscular imaging in clinical practice: an ESNR survey of 30 centers

Simonetta Gerevini, Lara Cristiano, Gennaro D'Anna, Antonella Castellano, Meike W. Vernooij, Tarek Yousry, Anna Pichiecchio

Summary: The current clinical imaging practice for neuromuscular disorders varies significantly between European and non-European countries in terms of image acquisition and post-processing techniques. Challenges identified include translating research advancements into practical clinical applications, implementing quantitative imaging methods, adopting structured reporting, and improving communication with referring physicians.

NEURORADIOLOGY (2023)

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Article Clinical Neurology

A parcellation-based connectomic model of hemispatial neglect

Syed A. Ahsan, Nicholas B. Dadario, Jasneet Dhaliwal, Robert G. Briggs, Karol Osipowicz, Syed M. Ahsan, Kassem Chendeb, Andrew K. Conner, Christen M. O'Neal, Chad A. Glenn, Michael E. Sughrue

Summary: This study identified 13 right hemisphere parcellations associated with hemispatial neglect through a meta-analysis of voxel-based morphometry magnetic resonance imaging (MRI) studies. The findings showed that these neglect-related parcellations are predominantly linked by the superior longitudinal fasciculus (SLF) throughout a fronto-parietal-temporal network. It was also revealed that the dorsal and ventral attention networks partially overlap with the neglect system and include various other higher-order networks.

JOURNAL OF NEUROIMAGING (2023)

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Article Clinical Neurology

Magnetic resonance spectroscopy in MELAS syndrome: correlation with CSF and plasma metabolite levels and change after glutamine supplementation

Maria Paz Guerrero-Molina, Angela Bernabeu-Sanz, Ana Ramos-Gonzalez, Montserrat Morales-Conejo, Aitor Delmiro, Cristina Dominguez-Gonzalez, Joaquin Arenas, Miguel A. Martin, Jesus Gonzalez de la Aleja

Summary: This study investigates the brain metabolism in MELAS patients and the effects of glutamine supplementation using H-1-MRS. The results show increased lactate levels in MELAS patients and a positive correlation between CSF lactate and H-1-MRS. However, glutamine supplementation did not affect brain metabolism.

NEURORADIOLOGY (2023)

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Article Clinical Neurology

Automatic estimation of brain parenchymal fraction in patients with multple sclerosis: a comparison between synthetic MRI and an established automated brain segmentation software based on FSL

Ilyas Yazici, Britta Krieger, Barbara Bellenberg, Theodoros Ladopoulos, Ralf Gold, Ruth Schneider, Carsten Lukas

Summary: In this study, we validated the estimation of brain parenchymal fraction (BPF) in multiple sclerosis (MS) patients using synthetic magnetic resonance imaging (SyMRI). We compared SyMRI with software tools from the FMRIB Software Library (FSL) and assessed longitudinal volume changes to determine the suitability of SyMRI for quantifying disease-specific changes.

NEURORADIOLOGY (2023)

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Article Clinical Neurology

Home-based, Remotely Supervised, 6-Week tDCS in Patients With Both MCI and Depression: A Randomized Double-Blind Placebo-Controlled Trial

Jiheon Kim, Seungchan Park, Hansol Kim, Daeyoung Roh, Do Hoon Kim

Summary: This study aimed to evaluate the efficacy of home-based and remotely monitored tDCS treatment in patients with both MCI and depression. The results showed that active tDCS decreased delta wave activation and increased beta wave activation compared to sham stimulation, and the increase in beta activity was correlated with cognitive enhancement. However, there was no significant difference between active and sham tDCS in terms of depressive symptoms and cognitive functions.

CLINICAL EEG AND NEUROSCIENCE (2023)

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Article Neurosciences

Movement-related ERS and connectivity in the gamma frequency decrease with practice

Elisa Tatti, Alberto Cacciola, Federico Carrara, Adalgisa Luciani, Angelo Quartarone, M. Felice Ghilardi

Summary: Previous research has shown that movements are accompanied by modulation of EEG activity. This study found that gamma ERS amplitude decreases after movement practice and rest, while connectivity patterns also decrease. Despite the amplitude reduction, gamma waves are still able to adapt to movement velocity.

NEUROIMAGE (2023)

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Article Neurosciences

Exploring the neural mechanisms underlying achalasia: A study of functional connectivity and regional brain activity

Nina Zhang, Binyu Teng, Xinyi Lu, Liangliang Shi, Li Liu, Fan Zhou, Ni Jiang, Xin Zhang, Cong Wang, Shanshan Shen, Ruhua Zheng, Shu Zhang, Yi Wang, Yuzheng Hu, Bing Zhang, Qipeng Zhang, Lei Wang

Summary: Abnormal resting-state functional connectivity and regional brain activity were found in patients with achalasia. This study provides new insights into the pathophysiology of achalasia and highlights the potential of resting-state functional MRI in improving the diagnosis and treatment of this condition.

NEUROIMAGE (2023)

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Article Neurosciences

Modulatory effects of fMRI acquisition time of day, week and year on adolescent functional connectomes across spatial scales: Implications for inference

Linfeng Hu, Eliot S. Katz, Catherine Stamoulis

Summary: Metabolic, hormonal, autonomic and physiological rhythms can have significant effects on cerebral hemodynamics and intrinsic brain synchronization. Scan time parameters, such as time-of-day, time-of-week (school day vs weekend), and time-of-year (school year vs summer vacation) can also impact the functional circuits of the adolescent brain. Therefore, these factors should be taken into account in studying the associations between cognitive performance and brain connectivity.

NEUROIMAGE (2023)

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Article Neurosciences

The impact of emotional valence and stimulus habituation on fMRI signal reliability during emotion generation

Alice Pirastru, Sonia Di Tella, Marta Cazzoli, Fabrizio Esposito, Giuseppe Baselli, Francesca Baglio, Valeria Blasi

Summary: The study found that for an emotion-generation task, the reliability of fMRI signals under negative emotional valence conditions was higher than under positive conditions. Neural suppression may not be the primary cause of low signal reliability, with different neural strategies potentially playing a role instead.

NEUROIMAGE (2023)

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