Comments on "Theoretical model for an MRI radio frequency resonator"

Author

De Zanche, N. ; Vermeulen, F.E. ; Allen, P.S.

Author_Institution

Dept. of Biomed. Eng., Alberta Univ., Edmonton, Alta., Canada

Volume

49

Issue

5

fYear

2002

fDate

5/1/2002 12:00:00 AM

Firstpage

495

Abstract

In contrast to a previous report [Baertlein et al., ibid., vol.47, p.535 (2000)], the transverse electromagnetic resonator used in magnetic resonance imaging is shown to be similar to the high-pass "birdcage" resonator in having an electric field minimum in correspondence with the maximum of the magnetic field. The noise performance of each resonator will, in consequence, be comparable, since at high frequencies patient conductive losses are predominant.

Keywords

biomedical MRI; cavity resonators; coils; MRI radio frequency resonator; TEM coil; electric field minimum; high frequencies; high-pass birdcage resonator; magnetic field maximum; magnetic resonance imaging; noise performance; patient conductive losses; theoretical model; transverse electromagnetic resonator; Coils; Impedance; Magnetic fields; Magnetic noise; Magnetic resonance imaging; Maxwell equations; Multiconductor transmission lines; Radio frequency; Resonant frequency; Voltage; Electromagnetic Fields; Equipment Design; Magnetic Resonance Imaging; Models, Theoretical; Phantoms, Imaging; Radio Waves;

fLanguage

English

Journal_Title

Biomedical Engineering, IEEE Transactions on

Publisher

ieee

ISSN

0018-9294

Type

jour

DOI

10.1109/10.995688

Filename

995688