Hierarchical Bayesian Modelling Improves Microstructural Parameter Mapping in Diffusion and Exchange MRI Data [0.03%]
分层贝叶斯模型改善了扩散张量和交换磁共振图像中的参数映射方法
Elizabeth Powell,Mark Maskery,Hedley C A Emsley et al.
Elizabeth Powell et al.
Microstructure modelling quantifies subvoxel tissue features by combining an MRI acquisition with a mathematical model, which is typically fitted voxel-by-voxel with least-squares (LSQ) minimisation to give voxelwise maps of microstructural...
Nuclear Magnetic Resonance-Based Metabolomic Profiling in Fibromyalgia Patients [0.03%]
基于核磁共振的代谢组学在纤维肌痛患者中的应用研究
Hatice Kübra Aşık,Yıldız Atamer,Metin Demirel et al.
Hatice Kübra Aşık et al.
Fibromyalgia (FM) is a multifactorial syndrome with poorly understood pathophysiology, characterized by chronic widespread pain and fatigue affecting the central and peripheral nervous systems, as well as the endocrine and muscular systems....
Reducing Noise Induced by Cardiac Pulsatility in Brain Maps of R2* and Magnetic Susceptibility Using Tailored k-space Sampling [0.03%]
利用定制的k空间采样减少脑图中由心脏搏动引起的R2*和磁化率噪声
Quentin Raynaud,Thomas Dardano,Rita Oliveira et al.
Quentin Raynaud et al.
Maps of the transverse relaxation rate R2* and magnetic susceptibility (χ) are computed from gradient-echo data and are sensitive to signal instabilities induced by cardiac pulsation. Here, we introduce two k-space sampling strategies that...
Tension-Dependent Variability and Repeatability of Achilles Tendon UTE-T2* Mapping Using Mono- and Bi-Exponential Models [0.03%]
基于单指数和双指数模型的跟腱UTE-T2 *图谱的张力依赖变异性及重复性测量
Ananya Goyal,Marco Barbieri,Valentina Mazzoli et al.
Ananya Goyal et al.
Quantitative MRI using ultrashort echo time (UTE)-T2* mapping is sensitive to collagen-bound water and tendon microstructure, enabling noninvasive assessment of tendon integrity and laxity. However, the extent to which UTE-T2* measures refl...
Optimal Control-Based Generic Framework for Radiofrequency Pulse Design in MRI [0.03%]
基于最优控制的MRI射频脉冲通用设计框架
Emilio Molina,Hélène Ratiney,Eric Van Reeth
Emilio Molina
This work proposes a general framework for the optimal design of radiofrequency pulses in MRI. Based on optimal control theory, it proposes a Python-based numerical implementation using state-of-the-art nonlinear optimization solver (IPOPT)...
Simultaneous Water-Specific and Fat-Specific T1 and Fat Fraction Mapping of the Abdomen in Free Breathing Conditions With a Radially Encoded MP2RAGE [0.03%]
自由呼吸腹部水和脂肪特异T1及脂肪分数成像的径向编码MP2RAGE方法
Nadège Corbin,François Maingault,Aurélien J Trotier et al.
Nadège Corbin et al.
The purpose of this study is to enable 3D abdominal imaging and quantitative parameter mapping in free breathing conditions and simultaneously provide proton-density fat fraction (PDFF), water-specific and fat-specific T1 maps. A radially e...
Reducing Variability in Deep Gray Matter QSM Using Differential ROI Referencing: A Phantom and In Vivo Evaluation [0.03%]
利用差分ROI参考减少深灰质QSM的可变性：对模型和体内评价
Tae Hyun Hwang,Gawon Lee,Myung Kyun Woo et al.
Tae Hyun Hwang et al.
Quantitative susceptibility mapping (QSM) measures the intrinsic magnetic susceptibility of tissues. Because susceptibility values are inherently relative rather than absolute, referencing to a region of interest (ROI) is commonly employed ...
Data-Driven Characterization of Knee Structures Using Non-Negative Matrix Factorization of 3D Multi-Echo UTE MRI [0.03%]
基于非负矩阵分解的三维回波平面MRI膝关节结构数据驱动表征研究
Céline Smekens,Pieter Van Dyck,Patrick S Fuchs et al.
Céline Smekens et al.
T2* quantification based on multi-echo ultrashort echo time (UTE) MRI has been widely proposed for knee tissue characterization, yet accurate model-based parameter estimation remains challenging due to ill-conditioning of the corresponding ...
Elbow Flexors Muscle Fat Fraction Is a Sensitive and Relevant Outcome Measure in Nonambulant Patients With DMD [0.03%]
DMD非行走患者肘屈肌脂肪分数是一项敏感且相关的结局测量指标
M Michaëls,K J Naarding,M van der Holst et al.
M Michaëls et al.
Duchenne muscular dystrophy (DMD) is an X-linked neuromuscular disease characterized by progressive muscle wasting. Objective and relevant outcome measures are needed for longitudinal follow-up and clinical trials. Quantitative MR muscle pa...
Radiation Effects on Normal Brain in Subjects With Recurrent Glioblastoma by Spectroscopic MRI [0.03%]
磁共振波谱学检查发现胶质母细胞瘤复发患者正常脑组织的放射效应
Abram Abdou,Sulaiman Sheriff,Kelly Rojas et al.
Abram Abdou et al.
Glioblastoma (GBM) is the most common and aggressive primary malignant brain tumor in adults and almost always recurs. In recurrent GBM, conventional MRI has limited ability to detect microscopic tumor infiltration and distinguish progressi...