Results 61 to 70 of about 4,917,448 (190)

9.4‐Tesla magnetic resonance imaging in focal epilepsy patients with high‐resolution surface‐based profiling of focal cortical dysplasias

Epilepsia, EarlyView.
Abstract Objective The detection of subtle epileptogenic lesions such as focal cortical dysplasias (FCDs) is a clinical challenge in the management of drug‐resistant focal epilepsy (DRFE). Ultra‐high‐field (UHF) magnetic resonance imaging (MRI) offers increased signal‐to‐noise ratios and spatial resolution compared to 3‐T MRI and may improve diagnostic
Cornelius Kronlage, Pascal Martin, Benjamin Bender, Gisela E. Hagberg, Jonas Bause, Joana R. A. Loureiro, Mathilde Ripart, Sophie Adler, Konrad Wagstyl, Holger Lerche, Niels K. N. Focke, Esther Kuehn   +11 more
wiley   +1 more source

The Effect of Oblique Image Slices on the Accuracy of Quantitative Susceptibility Mapping and a Robust Tilt Correction Method [PDF]

, 2021
Quantitative susceptibility mapping (QSM) using the MRI phase to calculate tissue magnetic susceptibility is finding increasing clinical applications. Oblique image slices are often acquired to facilitate radiological viewing and reduce artifacts.
Shmueli, K, Kiersnowski, OC, Thornton, JS, Karsa, A   +3 more
core   +1 more source

NoQSM-net: Combining Convolutional Neural Network With Numerical Optimization Algorithm for Quantitative Susceptibility Mapping Reconstruction

IEEE Access
In gradient echo MRI, quantitative susceptibility mapping (QSM) quantifies the magnetic susceptibility distributions of tissues, which has great potential in detecting brain diseases.
Qianqian Zhang, Yihao Guo, Wufan Chen
doaj   +1 more source

Quantitative susceptibility mapping to evaluate the early stage of Alzheimer's disease

NeuroImage: Clinical, 2017
The objective of this study was to evaluate susceptibility changes caused by iron accumulation in cognitive normal (CN) elderly, those with amnestic mild cognitive impairment (aMCI), and those with early state AD, and to compare the findings with gray ...
Hyug-Gi Kim, Soonchan Park, Hak Young Rhee, Kyung Mi Lee, Chang-Woo Ryu, Sun Jung Rhee, Soo Yeol Lee, Yi Wang, Geon-Ho Jahng   +8 more
doaj   +1 more source

Amyloid‐β–Related Cortical Susceptibility Alterations in Individuals Under Assessment for Alzheimer's Disease: A χ‐Separation Study

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Assessment of amyloid‐β (Aβ) burden and associated iron deposition and neurodegeneration is important for Alzheimer's disease (AD) management. Although quantitative susceptibility mapping (QSM) detects iron and myelin changes, conventional metrics suffer from signal cancelation between paramagnetic and diamagnetic components ...
Hiroyuki Tatekawa, Tatsushi Oura, Akitoshi Takeda, Ayako Omori, Natsuko Atsukawa, Shu Matsushita, Daisuke Horiuchi, Hirotaka Takita, Yasuhito Mitsuyama, Yoshihito Ban, Taro Shimono, Josef Pfeuffer, Daiju Ueda, Yoshiaki Itoh, Yukio Miki   +14 more
wiley   +1 more source

Neuromelanin‐Sensitive MRI as a Marker of Clinical Severity and Disease Burden in Parkinson's Disease: A Systematic Review and Meta‐analysis

Movement Disorders, EarlyView.
Abstract The neuropathology of Parkinson's disease (PD) is characterized in part by the degeneration of catecholaminergic neurons, particularly dopaminergic neurons in the substantia nigra pars compacta (SNpc) and noradrenergic neurons in the locus coeruleus (LC), yet no validated in vivo biomarker quantifies this process.
Rayo Akande, Thomas Kustermann, Štefan Holiga, Judith Anzures‐Cabrera, Patrik Brundin, Gennaro Pagano   +5 more
wiley   +1 more source

Fast Reconstruction of Motion‐Corrupted Data With Mobile‐GRAPPA: Motion and δB0$$ \delta {B}_0 $$ Inhomogeneity Correction Leveraging Efficient GRAPPA

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To develop an accurate and computationally efficient motion‐corrected MRI reconstruction framework that incorporates hundreds to thousands of motion and δB0$$ \delta {B}_0 $$ estimates from high‐temporal‐resolution tracking. Methods We propose Mobile‐GRAPPA, a k‐space preprocessing approach that uses MLP‐parameterized local GRAPPA ...
Yimeng Lin, Nan Wang, Daniel Abraham, Daniel Polak, Xiaozhi Cao, Aizada Nurdinova, Stephen Cauley, Kawin Setsompop   +7 more
wiley   +1 more source

Hemosiderin Detection inside the Mammillary Bodies Using Quantitative Susceptibility Mapping on Patients with Wernicke-Korsakoff Syndrome [PDF]

Hemorrhage inside the mammillary bodies (MMBs) is known to be one of the findings of Wernicke encephalopathy. Brain MRI of two patients with Wernicke-Korsakoff syndrome (WKS) demonstrated high susceptibility values representing hemosiderin deposition in ...
Hinoda, Takuya, Nakamoto, Yuji, 上村, 麻衣子, Okuchi, Sachi, 00767395, Kawashima, Hirotsugu, Fushimi, Yasutaka, Wang, Yang, Tagawa, Hiroshi, 0000-0001-8356-1409, Uemura, Maiko, Nakamura, Yuri, Otani, Sayo, Nakajima, Satoshi, Ikeda, Satoshi, Uemura, Maiko T, Sakata, Akihiko, 30832   +17 more
core   +1 more source

Quantitative susceptibility mapping (QSM) of white matter multiple sclerosis lesions: Interpreting positive susceptibility and the presence of iron [PDF]

Magnetic Resonance in Medicine, 2014
Purpose Within multiple sclerosis (MS) lesions iron is present in chronically activated microglia. Thus, iron detection with MRI might provide a biomarker for chronic inflammation within lesions. Here, we examine contributions of iron and myelin to magnetic susceptibility of lesions on quantitative ...
Cynthia, Wisnieff, Sriram, Ramanan, John, Olesik, Susan, Gauthier, Yi, Wang, David, Pitt   +5 more
openaire   +2 more sources

Quantitative Susceptibility Mapping of the Basal Ganglia and Thalamus at 9.4 Tesla

Frontiers in Neuroanatomy, 2021
The thalamus (Th) and basal ganglia (BG) are central subcortical connectivity hubs of the human brain, whose functional anatomy is still under intense investigation.
Vinod Jangir Kumar, Klaus Scheffler, Klaus Scheffler, Gisela E. Hagberg, Gisela E. Hagberg, Wolfgang Grodd   +5 more
doaj   +1 more source