Human Brain High-Resolution Diffusion MRI With Optimized, Slice-By-Slice, Zeroth and First Order [Formula: see text] Shimming in Head-Only High-Gradient MRI Systems [0.03%]
基于头部高梯度磁共振设备的零场与低阶 shim 优化的人脑高清弥散 MRI
Patricia Lan,Sherry S Huang,Chitresh Bhushan et al.
Patricia Lan et al.
Purpose: To propose a brain tissue-selective, optimized slice-by-slice B 0 $$ {B}_0 $$ shimming for high-resolution brain diffusion MRI. Methods: ...
Complementary Sensitivity of Fixed-Time and Fixed-Oscillation Regimes to Exchange and Structural Disorder in the Human Brain Revealed Using Oscillating-Gradient Diffusion MRI With Ultra-Strong Gradients [0.03%]
利用超强磁场振荡梯度扩散磁共振成像揭示的人脑中交换和结构无序在固定时间与固定震荡模式下的互补敏感性
Dongsuk Sung,Kwok-Shing Chan,Julianna Gerold et al.
Dongsuk Sung et al.
Purpose: Oscillating-gradient spin-echo (OGSE) diffusion MRI probes cell geometry and membrane integrity through the frequency-dependence of kurtosis, but prior studies have reported inconsistent findings depending on how...
Validating Numerical Simulations to Support Experimental Testing of MRI Gradient-Induced Heating of Passive Implants [0.03%]
用于支持MRI梯度引起的被动植入物加热实验测试的数值模拟验证方法研究
Umberto Zanovello,Alessandro Arduino,Luca Zilberti et al.
Umberto Zanovello et al.
Purpose: Numerical simulations can be adopted to aid the evaluation of the interaction between switched gradient fields and metallic implants and estimate the possible temperature increase. Anyway, an analysis of the cons...
Model Predictive Filtering MR Temperature Imaging for Laser-Induced Interstitial Thermotherapy [0.03%]
基于模型预测滤波的磁共振温度成像在激光消融术中的应用研究
Joshua Marchant,Robert J Bollo,Dennis L Parker et al.
Joshua Marchant et al.
Purpose: To evaluate the use of the Model Predictive Filtering (MPF) method to improve temporal resolution of magnetic resonance temperature imaging (MRTI) for monitoring laser interstitial thermal therapy (LITT) ablation...
Simultaneous Multi-Slice Acceleration for Free-Breathing Motion Corrected Late Gadolinium Enhancement Imaging [0.03%]
自由呼吸矫正晚期钆沉积显像的多切片加速方法
Grzegorz Tomasz Kowalik,Karl P Kunze,Filippo Bosio et al.
Grzegorz Tomasz Kowalik et al.
Purpose: The objective of this study was to develop and evaluate an accelerated free-breathing motion corrected and averaged late gadolinium enhancement MRI (FB PSIR-MoCo LGE) protocols. ...
Effects of RF-Induced Heating of Orthopedic Implants Across Stages of Bone Fracture Healing and Anatomical Variability: In Silico Assessment Using Computational Human Models at 1.5 T and 3.0 T MRI [0.03%]
基于计算人体模型的骨折愈合不同阶段及解剖学差异下植入物在1.5T和3.0T磁共振成像过程中射频加热效应的仿真评估研究
Ananya Nandikanti,Jianfeng Zheng,Stuart A Long et al.
Ananya Nandikanti et al.
Purpose: This study presents an in-silico assessment of RF-induced heating of orthopedic implants during various stages of bone fracture healing, namely surgery, scar, and healed phases, under 1.5 T and 3.0 T MRI. ...
A Dynamic Shim Approach for Correcting Eddy Current Effects in Diffusion-Prepared MRI Acquisition Using a Multi-Coil AC/DC Shim-Array [0.03%]
基于多线圈交直流电质体补偿阵列的扩散加权磁共振成像中涡流效应校正方法研究
Congyu Liao,Jason P Stockmann,Zhitao Li et al.
Congyu Liao et al.
Purpose: We developed a dynamic B0 shimming approach using a 46-channel AC/DC shim array to correct phase errors caused by eddy currents from diffusion-encoding gradients in diffusion-prepared MRI, enabling high b value i...
Simultaneous Volumetric T1 and T2 Mapping With Blood- and Fat-Suppression in Abdominal Aortic Aneurysms [0.03%]
基于抑制血液和脂肪的同时容积T1和T2制图在腹主动脉瘤中的应用
Wilhelm Stehling,Myrte Wennen,Eva Aalbregt et al.
Wilhelm Stehling et al.
Purpose: To develop and validate a protocol for simultaneous volumetric T1 and T2 mapping with blood- and fat-suppression, and apply it to patients with abdominal aortic aneurysms (AAA) to assess tissue characteristics. ...
Postexercise Lactate Clearance, T2 Relaxation, and J-Modulation in Human Skeletal Muscle Measured With Double-Quantum Filtered 1H MRS at 7 T [0.03%]
运动后的乳酸清除、T2弛豫及J耦合调制：采用双量子滤波的7T1H MRS技术检测人体骨骼肌中的变化
Kostiantyn Repnin,Vasco Rafael Rocha Dos Santos,Veronika Cap et al.
Kostiantyn Repnin et al.
Purpose: 1H MRS lactate measurements are potentially valuable for studying energy metabolism in working skeletal muscle, but some technical obstacles need to be overcome. Spectral filtering to isolate the lactate signal f...
Coaxial Dipole Array With Switching Transmit Sensitivities for Ultrahigh Field MRI [0.03%]
用于超高场磁共振成像的切换发射灵敏度同轴偶极列阵
Dario Bosch,Georgiy A Solomakha,Felix Glang et al.
Dario Bosch et al.
Purpose: To investigate dipole antennas with electronically switchable transmit field patterns to improve flip angle homogeneity in ultra-high field MRI. ...