An EM Simulation-Based Design Flow for Custom-Built MR Coils Incorporating Signal and Noise
An EM Simulation-Based Design Flow for Custom-Built MR Coils Incorporating Signal and Noise
复制标题
基于电磁仿真的包含信号和噪声的定制 MR 线圈的设计流程
DOI：
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发表时间：
2018
影响因子：
10.6
通讯作者：
J. Anders
中科院分区：
文献类型：
--
作者：
Andreas Horneff;M. Eder;E. Hell;J. Ulrici;J. Felder;V. Rasche;J. Anders
开发定制MR线圈是一项繁琐的任务，其中线圈的SNR性能、灵敏度模式和穿透深度<italic>的先验</italic>预测有助于通过减少所需的硬件制造迭代来大大加快设计过程。本文提出的基于仿真的设计流程考虑了整个MR成像过程。也就是说，它包括线圈和体模的所有几何和材料属性、热噪声以及目标MR序列。所提出的仿真驱动的设计流程进行验证，使用制造的原型线圈，其性能进行了优化，其SNR性能，基于所提出的设计流程，通过比较线圈的测量性能与仿真结果。在这些实验中，平均值和标准偏差的相对误差之间的模拟和测量线圈的灵敏度模式被发现为<inline-formula><tex-math notation="LaTeX">$\mu ={1.79}\%$</tex-math></inline-formula>和<inline-formula><tex-math notation="LaTeX">$\sigma ={3.15}\%$</tex-math></inline-formula>。此外，模拟和测量的体素SNR之间的峰值偏差被发现是小于4%，表明模拟是在良好的符合测量结果，验证所提出的基于软件的设计方法。
Developing custom-built MR coils is a cumbersome task, in which an <italic>a priori</italic> prediction of the coils’ SNR performance, their sensitivity pattern, and their depth of penetration helps to greatly speed up the design process by reducing the required hardware manufacturing iterations. The simulation-based design flow presented in this paper takes the entire MR imaging process into account. That is, it includes all geometric and material properties of the coil and the phantom, the thermal noise as well as the target MR sequences. The proposed simulation-driven design flow is validated using a manufactured prototype coil, whose performance was optimized regarding its SNR performance, based on the presented design flow, by comparing the coil’s measured performance against the simulated results. In these experiments, the mean and the standard deviation of the relative error between the simulated and measured coil sensitivity pattern were found to be <inline-formula> <tex-math notation="LaTeX">$\mu ={1.79}\%$ </tex-math></inline-formula> and <inline-formula> <tex-math notation="LaTeX">$\sigma ={3.15}\%$ </tex-math></inline-formula>. Moreover, the peak deviation between the simulated and measured voxel SNR was found to be less than 4%, indicating that simulations are in good accordance with the measured results, validating the proposed software-based design approach.
DOI：
10.1002/cmr.b.20209
发表时间：
2011-10
期刊：
Concepts in magnetic resonance. Part B, Magnetic resonance engineering
影响因子：
--
作者：
Pang Y;Wu B;Wang C;Vigneron DB;Zhang X
通讯作者：
Zhang X
DOI：
10.3978/j.issn.2223-4292.2014.02.07
发表时间：
2014-02-01
影响因子：
2.8
作者：
Pang, Yong;Wong, Ernest W. H.;Zhang, Xiaoliang
通讯作者：
Zhang, Xiaoliang