New setup for multi-parametric MRI in young and old rat gastrocnemius at 4.7 and 7 T during muscle stimulation [0.03%]
在肌肉刺激过程中，4.7和7T年轻和年老大鼠腓肠肌的多参数磁共振成像新设置
Stéphane Loubrie,Aurelien Trotier,Emeline Ribot et al.
Stéphane Loubrie et al.
T1 and T2 relaxation times combined with 31 P spectroscopy have been proven efficient for muscular disease characterization as well as for pre- and post-muscle stimulation measurements. Even though 31 P spectroscopy can already be performed...
Effects of repeated manganese treatment on proton magnetic resonance spectra of the globus pallidus in rat brain [0.03%]
重复锰处理对大鼠豆状核质子磁共振光谱的影响
Xuxia Wang,Ronghui Li,Rui He et al.
Xuxia Wang et al.
Excessive manganese is neurotoxic, which means that it can affect the concentrations of metabolite in 1 H MRS. In addition, manganese is paramagnetic and it may influence the relaxation times of the metabolite. The aim of this study is to a...
A time-course study of actively stained mouse brains: Diffusion tensor imaging parameters and connectomic stability over 1 year [0.03%]
主动染色小鼠脑的时间过程研究：一年中的弥散张量成像参数和连接组稳定性
Jaclyn Xiao,Kathryn J Hornburg,Gary Cofer et al.
Jaclyn Xiao et al.
While the application of diffusion tensor imaging (DTI), tractography, and connectomics to fixed tissue is a common practice today, there have been limited studies examining the effects of fixation on brain microstructure over extended peri...
Comparison of linear combination modeling strategies for edited magnetic resonance spectroscopy at 3 T [0.03%]
3T下编辑磁共振波谱线性组合建模策略的比较研究
Helge J Zöllner,Sofie Tapper,Steve C N Hui et al.
Helge J Zöllner et al.
J-difference-edited spectroscopy is a valuable approach for the in vivo detection of γ-aminobutyric-acid (GABA) with magnetic resonance spectroscopy (MRS). A recent expert consensus article recommends linear combination modeling (LCM) of e...
Comparative Study
NMR in biomedicine. 2022 Jan;35(1):e4618. DOI:10.1002/nbm.4618 2022
Halston J C Sandford,James W MacKay,Lauren E Watkins et al.
Halston J C Sandford et al.
The dynamic contrast-enhanced (DCE)-MRI parameter Ktrans can quantify the intensity of synovial inflammation (synovitis) in knees with osteoarthritis (OA), but requires the use of gadolinium-based contrast agent (GBCA). Diffusion tensor ima...
Deep learning methods for automatic segmentation of lower leg muscles and bones from MRI scans of children with and without cerebral palsy [0.03%]
深度学习在脑瘫儿童和非脑瘫儿童肌肉骨骼MRI图像自动分割中的应用研究
Jiayi Zhu,Bart Bolsterlee,Brian V Y Chow et al.
Jiayi Zhu et al.
Cerebral palsy is a neurological condition that is known to affect muscle growth. Detailed investigations of muscle growth require segmentation of muscles from MRI scans, which is typically done manually. In this study, we evaluated the per...
Quantitative effects of off-resonance related distortion on brain mechanical property estimation with magnetic resonance elastography [0.03%]
离共振相关失真对磁共振弹性成像中脑力学属性定量估计的影响研究
Grace McIlvain,Matthew D J McGarry,Curtis L Johnson
Grace McIlvain
Off-resonance related geometric distortion can impact quantitative MRI techniques, such as magnetic resonance elastography (MRE), and result in errors to these otherwise sensitive metrics of brain health. MRE is a phase contrast technique t...
Tabinda Sarwar,Kotagiri Ramamohanarao,Andrew Zalesky
Tabinda Sarwar
Diffusion MRI tractography is the most widely used macroscale method for mapping connectomes in vivo. However, tractography is prone to various errors and biases, and thus tractography-derived connectomes require careful validation. Here, w...
High fidelity fiber orientation density functions from fiber ball imaging [0.03%]
基于纤维球成像的高保真光纤取向密度函数
Hunter G Moss,Jens H Jensen
Hunter G Moss
The fiber orientation density function (fODF) in white matter is a primary physical quantity that can be estimated with diffusion MRI. It has often been employed for fiber tracking and microstructural modeling. Requirements for the construc...
Impact of fractional amplitude of low-frequency fluctuations in motor- and sensory-related brain networks on spinal cord injury severity [0.03%]
低频振荡幅度在运动和感觉相关脑网络对脊髓损伤严重程度的影响
Ae Ryoung Kim,Hyunsil Cha,Eunji Kim et al.
Ae Ryoung Kim et al.
Spinal cord injury (SCI) can cause motor, sensory, and autonomic dysfunctions and may affect the cerebral functions. However, the mechanisms of plastic changes in the brain according to SCI severity remain poorly understood. Therefore, in t...