Results 11 to 20 of about 1,758 (166)

An Integrated QSM-Radiomics Nomogram With Clinical and Imaging Markers for Stratifying Cognitive Impairment in Hypertension. [PDF]

CNS Neurosci Ther
This study developed an integrated nomogram combining QSM‐based radiomics, brain iron deposition, white matter hyperintensity, and clinical markers. This model demonstrated superior performance in stratifying hypertensive cognitive impairment compared to traditional single‐parameter models.
Su Y, Liu T, Dong C, Ge L, Li T, Zhang Z, Zhang Y, Li C, Zhao J, Zheng C, Haacke EM, Wu W, Wang L.   +12 more
europepmc   +2 more sources

Sub-voxel quantitative susceptibility mapping for assessing whole-brain magnetic susceptibility from ages 4 to 80. [PDF]

Hum Brain Mapp, 2023
Age‐specific and longitudinal atlases of sub‐voxel susceptibility were constructed on 494 healthy adults. The developmental trajectories of sub‐voxel susceptibility uncovered the spatial and temporal patterns of iron deposition and myelination/demyelination concurrently during brain aging, especially the evolution of myelin in deep gray matter and iron
Lao G, Liu Q, Li Z, Guan X, Xu X, Zhang Y, Wei H.   +6 more
europepmc   +2 more sources

Quantitative Assessment of Deep Gray Matter Susceptibility and Correlation With Cognition in Patients With Liver Cirrhosis. [PDF]

Brain Behav
The impact of brain metal deposition on cognitive decline in patients with liver cirrhosis remains unclear. Quantitative susceptibility mapping (QSM) was employed to assess deep gray matter, and its association with cognition was examined. Our findings demonstrate a significant correlation between the susceptibility of the red nucleus, substantia nigra,
Wu W, Su Y, Qin Z, Kang J, Xiang D, Liu D, Zheng C, Haacke EM, Wang L.   +8 more
europepmc   +2 more sources

Brain iron load and neuroaxonal vulnerability in adult attention-deficit hyperactivity disorder. [PDF]

Psychiatry Clin Neurosci
Aim Adult attention deficit hyperactivity disorder (ADHD) may be associated with an increased risk of dementia in old age. Here, we investigated the liability for neurodegenerative brain disease in adult ADHD, possibly reflected by increased brain iron content and associated neuroaxonal vulnerability. Methods Thirty‐two adults with ADHD (35 ± 10 years)
Berberat J, Kagerer SM, Späni C, Hua J, Bavato F, Gruber P, van Zijl PC, Perroud N, Li X, Stämpfli P, Seifritz E, Lövblad KO, Quednow BB, Unschuld PG.   +13 more
europepmc   +2 more sources

Adaptive Square-Root Unscented Kalman Filter Phase Unwrapping with Modified Phase Gradient Estimation

Remote Sensing, 2022
Phase unwrapping (PU) is a key program in data processing in the interferometric synthetic aperture radar (InSAR) technique, and its accuracy directly affects the quality of final SAR data products.
Yansuo Zhang, Shubi Zhang, Yandong Gao, Shijin Li, Yikun Jia, Minggeng Li   +5 more
doaj   +1 more source

An Improved Method of the Finite-Difference Sparse Phase Unwrapping

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Phase unwrapping (PU) is a significant problem for reconstructing the deformation field during synthetic aperture radar interferometry analysis. The various 2-D PU algorithms can be divided into two categories: path-following methods and optimization ...
Lian Liu, Chunyan Qu, Xinjian Shan
doaj   +1 more source

Bayesian Filtering Multi-Baseline Phase Unwrapping Method Based on a Two-Stage Programming Approach

Applied Sciences, 2020
Phase unwrapping (PU) has been a key step in the processing of interferometric synthetic aperture radar (InSAR) data, and its processing accuracy will directly affect the reconstruction results of digital elevation models (DEMs).
YanDong Gao, XinMing Tang, Tao Li, QianFu Chen, Xiang Zhang, ShiJin Li, Jing Lu   +6 more
doaj   +1 more source

A Novel Quality-Guided Two-Dimensional InSAR Phase Unwrapping Method via GAUNet

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Phase unwrapping (PU) has always been a critical and challenging step in interferometric synthetic aperture radar (InSAR) data processing. Inspired by existing research, i.e., the PGNet, we propose a novel quality-guided 2-D InSAR PU method via deep ...
Hai Wang, Jun Hu, Haiqiang Fu, Changcheng Wang, Zhenhai Wang   +4 more
doaj   +1 more source

Improved branch-cut phase unwrapping strategy based on dynamic adjacent table

The Journal of Engineering, 2019
Phase unwrapping (PU) is a key step of interferometric SAR signal processing. The accuracy of the unwrapping phase directly affects the accuracy of the digital elevation model (DEM).
Tiandong Liu, Zhengguo Shang, Jiabao Wu, Dawei Zhou, Shi Yan   +4 more
doaj   +1 more source

Quantitative susceptibility mapping in the brain reflects spatial expression of genes involved in iron homeostasis and myelination. [PDF]

Hum Brain Mapp
We compared values from quantitative susceptibility mapping (QSM) images and spatial gene expression, measured by the Allen Human Brain Atlas. Our findings demonstrate a positive correlation between the expression of ferritin, ferroportin, transferrin, several gene markers of myelinating oligodendrocytes, and QSM in deep grey nuclei regions.
Cohen Z, Lau L, Ahmed M, Jack CR, Liu C.
europepmc   +2 more sources