Optimization of a Transverse Electromagnetic Resonator for Magnetic Resonance Imaging at High Field of 9.4 T

Author

Bouhmidi, Rachid ; Benahmed, Nasreddine ; Aliane, Kamila ; Meriah, Sidi Mohammed ; Bendimerad, Fethi Tarik ; Benabdallah, Nadia

Author_Institution

Dept. of Telecommun., Univ. Abou Bekr Belkaid-Tlemcen, Tlemcen, Algeria

fYear

2012

fDate

27-30 May 2012

Firstpage

1

Lastpage

4

Abstract

In this paper, we have implemented a numerical tool using finite element method (FEM) for designing an antenna for MRI (Magnetic Resonance Imaging) probe operating at high field. The birdcage antenna type is a transverse electromagnetic (TEM) coupled lines resonator, and the developed model in the absence of a biological load is based on the propagation equations of voltages and currents on the coupled lines of the resonator. This numerical tool simulates the frequency response of the reflection coefficient of the RF (Radio Frequency) excitation port of the resonator, which allows us to estimate the level of adaptation of the antenna for imaging small animals at a field of 9.4 T.

Keywords

antennas; biomedical MRI; coupled transmission lines; electromagnetic wave reflection; finite element analysis; frequency response; multiconductor transmission lines; radiowave propagation; resonators; FEM; MRI probe; RF excitation port; TEM coupled line resonator; antenna adaptation level estimation; antenna design; birdcage type antenna; current propagation equations; finite element method; frequency response; magnetic flux density 9.4 T; magnetic resonance imaging; numerical tool; radiofrequency excitation port; reflection coefficient; transverse electromagnetic resonator optimization; voltage propagation equations; Equations; Integrated circuit modeling; Magnetic resonance imaging; Mathematical model; Multiconductor transmission lines; Resonant frequency; Transmission line matrix methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering and Technology (S-CET), 2012 Spring Congress on

Conference_Location

Xian

Print_ISBN

978-1-4577-1965-3

Type

conf

DOI

10.1109/SCET.2012.6342152

Filename

6342152