Simulation, design, and test of an elliptical surface coil for magnetic resonance imaging and spectroscopy

IF 0.9 4区 医学 Q4 CHEMISTRY, PHYSICAL Concepts in Magnetic Resonance Part B-Magnetic Resonance Engineering Pub Date : 2018-02-19 DOI:10.1002/cmr.b.21361
Giulio Giovannetti, Alessandra Flori, Daniele De Marchi, Giuseppe Matarazzo, Francesca Frijia, Silvia Burchielli, Domenico Montanaro, Giovanni Donato Aquaro, Luca Menichetti
{"title":"Simulation, design, and test of an elliptical surface coil for magnetic resonance imaging and spectroscopy","authors":"Giulio Giovannetti,&nbsp;Alessandra Flori,&nbsp;Daniele De Marchi,&nbsp;Giuseppe Matarazzo,&nbsp;Francesca Frijia,&nbsp;Silvia Burchielli,&nbsp;Domenico Montanaro,&nbsp;Giovanni Donato Aquaro,&nbsp;Luca Menichetti","doi":"10.1002/cmr.b.21361","DOIUrl":null,"url":null,"abstract":"<p>The simplest design of surface coils for magnetic resonance imaging (MRI) applications is circular and square loops, both producing a magnetic field perpendicular to the coil plane in the central region-of-interest (ROI), with an amplitude that decreases along the coil axis. However, a surface coil constituted by a loop with different geometry could be necessary when particular field-of-views (FOVs) are desired, especially for performing imaging in an elongated region. This can be achieved by using an elliptical loop, which can guarantee a wide longitudinal FOV and a good penetration in deep sample regions. This work proposes the application of a method for elliptical coil Signal-to-Noise Ratio (SNR) estimation previously developed for circular and square loop design, in which coil inductance and resistance are analytically calculated and the magnetic field pattern is estimated using the magnetostatic approach, while the sample-induced resistance is calculated with the vector potential calculation method. In the second part of the paper, we propose the simulation and the design of a transmit/receive elliptical coil for MRI in mice with a 3T clinical scanner. We also evaluated the coil performance in a preliminary magnetic resonance spectroscopy (MRS) study in phantom.</p>","PeriodicalId":50623,"journal":{"name":"Concepts in Magnetic Resonance Part B-Magnetic Resonance Engineering","volume":"47B 4","pages":""},"PeriodicalIF":0.9000,"publicationDate":"2018-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/cmr.b.21361","citationCount":"7","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Concepts in Magnetic Resonance Part B-Magnetic Resonance Engineering","FirstCategoryId":"3","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/cmr.b.21361","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 7

Abstract

The simplest design of surface coils for magnetic resonance imaging (MRI) applications is circular and square loops, both producing a magnetic field perpendicular to the coil plane in the central region-of-interest (ROI), with an amplitude that decreases along the coil axis. However, a surface coil constituted by a loop with different geometry could be necessary when particular field-of-views (FOVs) are desired, especially for performing imaging in an elongated region. This can be achieved by using an elliptical loop, which can guarantee a wide longitudinal FOV and a good penetration in deep sample regions. This work proposes the application of a method for elliptical coil Signal-to-Noise Ratio (SNR) estimation previously developed for circular and square loop design, in which coil inductance and resistance are analytically calculated and the magnetic field pattern is estimated using the magnetostatic approach, while the sample-induced resistance is calculated with the vector potential calculation method. In the second part of the paper, we propose the simulation and the design of a transmit/receive elliptical coil for MRI in mice with a 3T clinical scanner. We also evaluated the coil performance in a preliminary magnetic resonance spectroscopy (MRS) study in phantom.

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
用于磁共振成像和光谱学的椭圆表面线圈的模拟、设计和测试
用于磁共振成像(MRI)应用的表面线圈最简单的设计是圆形和方形线圈,它们都在中心感兴趣区域(ROI)产生垂直于线圈平面的磁场,其振幅沿线圈轴减小。然而,当需要特定的视场(fov)时,特别是在细长区域进行成像时,由不同几何形状的环路组成的表面线圈可能是必要的。这可以通过使用椭圆环来实现,它可以保证宽的纵向视场和在深样本区域的良好穿透。本文提出了一种椭圆线圈信噪比(SNR)估计方法的应用,该方法先前为圆形和方形环路设计开发,其中线圈电感和电阻是解析计算的,磁场方向图是使用静磁方法估计的,而样品感应电阻是使用矢量电位计算方法计算的。在论文的第二部分,我们提出了用3T临床扫描仪模拟和设计用于小鼠MRI的发射/接收椭圆线圈。我们还在幻影的初步磁共振光谱研究中评估了线圈的性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
CiteScore
2.60
自引率
0.00%
发文量
3
审稿时长
>12 weeks
期刊介绍: Concepts in Magnetic Resonance Part B brings together engineers and physicists involved in the design and development of hardware and software employed in magnetic resonance techniques. The journal welcomes contributions predominantly from the fields of magnetic resonance imaging (MRI), nuclear magnetic resonance (NMR), and electron paramagnetic resonance (EPR), but also encourages submissions relating to less common magnetic resonance imaging and analytical methods. Contributors come from both academia and industry, to report the latest advancements in the development of instrumentation and computer programming to underpin medical, non-medical, and analytical magnetic resonance techniques.
期刊最新文献
Impact of Patient Body Posture on RF-Induced Energy Absorption by Orthopedic Plates Odd-Leg Birdcages for Geometric Decoupling in Multinuclear Imaging and Spectroscopy A General Framework for Automated Accurate Calculation of b-Matrix (Auto-b) in Diffusion MRI Pulse Sequences Development of Electron Paramagnetic Resonance Magnet System for In Vivo Tooth Dosimetry Diagnosis of Alzheimer’s Disease with Extreme Learning Machine on Whole-Brain Functional Connectivity
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1