Results 111 to 120 of about 4,917,448 (190)

Midbrain and pallidal iron changes identify patients with REM sleep behaviour disorder and Parkinson’s disease

npj Parkinson's Disease
Idiopathic REM sleep behaviour disorder (iRBD) is considered a prodromal form of Parkinson’s Disease (PD), potentially exhibiting similar patterns of neurodegeneration, such as brain iron changes.
Erind Alushaj, Alan Kuurstra, Ravi S. Menon, Hooman Ganjavi, Anisa Morava, Manas Sharma, Alia Kashgari, Jennifer Barr, William Reisman, Ali R. Khan, Penny A. MacDonald   +10 more
doaj   +1 more source

Functions for Executing Quantitative Susceptibility Mapping (QSM) Algorithms to Investigate Sensitivity Towards Brain Iron Changes

<p>This repository contains only the functions utilized to execute the QSM algorithms featured in the publication titled "Sensitivity of Quantitative Susceptibility Mapping in Clinical Brain Research." Requests for the original algorithms should be
Salman, Fahad
core   +1 more source

QSMDiff: Unsupervised 3D Diffusion Models for Quantitative Susceptibility Mapping [PDF]

Quantitative Susceptibility Mapping (QSM) dipole inversion is an ill-posed inverse problem for quantifying magnetic susceptibility distributions from MRI tissue phases.
Jiang, Wei, Gao, Yang, Xiong, Zhuang, Sun, Hongfu, Liu, Feng   +4 more
core   +1 more source

Investigating the effect of masking and background field removal algorithms on the quality of QSM reconstructions using a realistic numerical head phantom

NeuroImage
Background field removal (BFR) is an important step in the Quantitative Susceptibility Mapping (QSM) pipeline, enabling the reconstruction of local susceptibility distributions by removing contributions from sources outside the region of interest (ROI ...
Carlos Milovic, Patrick S. Fuchs, Mathias Lambert, Oriana Arsenov, Oliver C. Kiersnowski, Laxmi Muralidharan, Russell Murdoch, Jannette Nassar, Karin Shmueli   +8 more
doaj   +1 more source

Quantitative Assessment of Deep Gray Matter Susceptibility and Correlation With Cognition in Patients With Liver Cirrhosis

Brain and Behavior
Background and Objectives Accumulation of metals quantified by quantitative susceptibility mapping (QSM) in deep gray matter (DGM) and their impact on cognition have not been studied in patients with liver cirrhosis.
Wenjun Wu, Yu Su, Ziji Qin, Jiamin Kang, Dongqiao Xiang, Dingxi Liu, Chuansheng Zheng, E. Mark Haacke, Lixia Wang   +8 more
doaj   +1 more source

Value of Quantitative Susceptibility Mapping in Clinical Neuroradiology

Quantitative susceptibility mapping (QSM) is a unique technique for providing quantitative information on tissue magnetic susceptibility using phase image data.
大谷, 紗代, 伏見, 育崇, Nakamoto, Yuji, 中島, 諭, Okuchi, Sachi, 奥知, 左智, Otani, Sayo, 中本, 裕士, Nakajima, Satoshi, 坂田, 昭彦, Fushimi, Yasutaka, Sakata, Akihiko   +11 more
core  

An Initial Clinical Evaluation of Quantitative Susceptibility Mapping for Quantitative Characterisation of Intramyocardial Hemorrhage

ObjectiveTo characterise the performance of quantitative susceptibility mapping (QSM) for the detection of hemorrhagic iron in the context of ST elevation myocardial infarction (STEMI).BackgroundIron deposition following intramyocardial hemorrhage in ...
Roujol, Sébastien, Tyler, Andrew; id_orcid, Bosio, Filippo, Kam Wa, Matthew E. Li, Chiribiri, Amedeo, Benedetti, Giulia, Huang, Li, Littlewood, Simon J., Masci, Pier Giorgio   +8 more
core   +4 more sources

Quantitative susceptibility mapping for susceptibility source separation with adaptive relaxometric constant estimation (QSM-ARCS) from solely gradient-echo data

NeuroImage
To separate the contributions of paramagnetic and diamagnetic sources within a voxel, a magnetic susceptibility source separation method based solely on gradient-echo data has been developed. To measure the opposing susceptibility sources more accurately,
Hirohito Kan, Yuto Uchida, Shohei Kawaguchi, Harumasa Kasai, Akio Hiwatashi, Yoshino Ueki   +5 more
doaj   +1 more source

Weak‐harmonic regularization for quantitative susceptibility mapping [PDF]

, 2018
PURPOSE: Background‐field removal is a crucial preprocessing step for quantitative susceptibility mapping (QSM). Remnants from this step often contaminate the estimated local field, which in turn leads to erroneous tissue‐susceptibility reconstructions ...
Zhao, B, Langkammer, C, Milovic, C, Acosta-Cabronero, J, Tejos, C, Bilgic, B   +5 more
core  

Susceptibility and diffusion MRI biomarkers predict development of Parkinsonism in iRBD

npj Parkinson's Disease
Quantitative MRI techniques, including quantitative susceptibility mapping (QSM) and diffusion tensor imaging (DTI), may detect early neurodegenerative changes in ɑ-synucleinopathies, especially within the midbrain.
Zsoka Varga, Jiri Nepozitek, Jan Hlavnicka, Jiri Keller, Abhineet Ojha, Patrizia Pantano, Stanislav Marecek, Karel Sonka, Petr Dusek   +8 more
doaj   +1 more source