Results 1 to 10 of about 6,584,562 (203)

Magnetic Susceptibility Source Separation Solely from Gradient Echo Data: Histological Validation [PDF]

Tomography, 2022
Quantitative susceptibility mapping (QSM) facilitates mapping of the bulk magnetic susceptibility of tissue from the phase of complex gradient echo (GRE) MRI data.
Alexey V. Dimov, Kelly M. Gillen, Thanh D. Nguyen, Jerry Kang, Ria Sharma, David Pitt, Susan A. Gauthier, Yi Wang   +7 more
doaj   +5 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   +4 more sources

χ-sepnet: Deep Neural Network for Magnetic Susceptibility Source Separation. [PDF]

Hum Brain Mapp
Magnetic susceptibility source separation (χ-separation), an advanced quantitative susceptibility mapping (QSM) method, enables the separate estimation of paramagnetic and diamagnetic susceptibility source distributions in the brain.
Kim M, Ji S, Kim J, Min K, Jeong H, Youn J, Kim T, Jang J, Bilgic B, Shin HG, Lee J.   +10 more
europepmc   +6 more sources

So You Want to Image Myelin Using MRI: Magnetic Susceptibility Source Separation for Myelin Imaging. [PDF]

Magn Reson Med Sci
In MRI, researchers have long endeavored to effectively visualize myelin distribution in the brain, a pursuit with significant implications for both scientific research and clinical applications.
Lee J, Ji S, Oh SH.
europepmc   +4 more sources

χ-separation: Magnetic susceptibility source separation toward iron and myelin mapping in the brain

NeuroImage, 2021
Obtaining a histological fingerprint from the in-vivo brain has been a long-standing target of magnetic resonance imaging (MRI). In particular, non-invasive imaging of iron and myelin, which are involved in normal brain functions and are ...
Hyeong-Geol Shin, Jingu Lee, Young Hyun Yun, Seong Ho Yoo, Jinhee Jang, Se-Hong Oh, Yoonho Nam, Sehoon Jung, Sunhye Kim, Masaki Fukunaga, Woojun Kim, Hyung Jin Choi, Jongho Lee   +12 more
doaj   +3 more sources

Thalamic quantitative susceptibility mapping and susceptibility source separation: a critical narrative review of evidence and interpretation [PDF]

Frontiers in Neurology
Quantitative susceptibility mapping (QSM) measures net tissue magnetic susceptibility, which can conceal coexisting contributions of opposite sign. This is relevant to the thalamus, where nuclei differ in cellular composition, myelinated fibers, and ...
Sadegh Ghaderi, Sadegh Ghaderi, Sadegh Ghaderi, Maria Agnese Pirozzi, Maria Agnese Pirozzi, Minoo Sharbafshaaer, Minoo Sharbafshaaer, Francesca Trojsi, Francesca Trojsi, Sana Mohammadi, Sana Mohammadi, Seyed-Mohammad Fereshtehnejad, Seyed-Mohammad Fereshtehnejad, Seyed-Mohammad Fereshtehnejad   +13 more
doaj   +2 more sources

PI-uMSS: Prior information-based unsupervised magnetic source separation in quantitative susceptibility mapping

NeuroImage
Magnetic source separation (MSS) in quantitative susceptibility mapping (QSM) provides a powerful tool to disentangle paramagnetic and diamagnetic contributions, enabling more accurate quantification of brain iron and myelin alterations.
Junjie He, Bangkang Fu, Cen Pan, Lisha Nie, Rui Xu, Zi Xu, Rongpin Wang   +6 more
doaj   +3 more sources

Depth-wise profiles of iron and myelin in the cortex and white matter using χ-separation: A preliminary study

NeuroImage, 2023
The in-vivo profiling of iron and myelin across cortical depths and underlying white matter has important implications for advancing knowledge about their roles in brain development and degeneration.
Subin Lee, Hyeong-Geol Shin, Minjun Kim, Jongho Lee   +3 more
doaj   +1 more source

A review on the analysis of aeromagnetic anomaly and its geological and tectonic applications

地球与行星物理论评, 2022
Aeromagnetic anomaly has the obvious advantages of wide coverage, low cost and high lateral resolution in geological structure research, and has been widely used in concealed magmatic rock and faults detection, tectonic characteristics (e.g.
Liguo Jiao, Yu Lei, Jiyao Tu, Junhao Zhao   +3 more
doaj   +1 more source

GEOCHEMICAL AND MAGNETIC CHARACTERISTICS OF PLACER GOLD DEPOSITS FROM CENTRAL KALIMANTAN, INDONESIA

Rudarsko-geološko-naftni Zbornik, 2023
Massive tailings have resulted from the extensive use of placer deposits in Central Kalimantan, Indonesia, by artisanal and small-scale gold mining (ASGM) activities. Recently, the placer deposits and their tailings have been exploited for heavy minerals.
Gusfrimanuel Nahan, Satria Bijaksana, Putu Billy Suryanata, Khalil Ibrahim   +3 more
doaj   +1 more source