Field-Simulation Based Engineering of RF Antenna Probes with Non-Uniform Substrates for High-Field Magnetic Resonance Imaging Systems

被引：0
|
作者：
Gandji, Navid P. [1 ]
Palle, Akshay V. [1 ]
Semouchkin, George B. [1 ]
Semouchkina, Elena [1 ]
机构：
[1] Michigan Technol Univ, Dept Elect & Comp Engn, Houghton, MI 49931 USA
来源：
APPLIED COMPUTATIONAL ELECTROMAGNETICS SOCIETY JOURNAL | 2016年 / 31卷 / 05期
基金：
美国国家科学基金会;
关键词：
High-field MRI systems; magnetic field uniformity; patch antenna; RF probe; TUNABLE PATCH ANTENNA;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
It is proposed to replace RF volume coils in high-field Magnetic Resonance Imaging (MRI) scanners by a microstrip patch antenna system. The performed computational studies have demonstrated an opportunity to form extended 3D volumes of homogenous RF magnetic fields by using a system of placed vis-a-vis two patch antennas. In order to control antenna dimensions and homogeneity of antenna near fields, the substrates of antennas have been engineered by appropriate patterning of high permittivity dielectric inserts. A variety of antennas with engineered substrates responding at 600 MHz for application in 14T MRI scanners have been designed, and the homogeneity of magnetic fields achieved inside the antenna system has been demonstrated.
引用
收藏
页码：492 / 497
页数：6
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