Nadia Benabdallah et al 2007 Phys. Med. Biol. 52 4943 doi:10.1088/0031-9155/52/16/015
Nadia Benabdallah, Nasreddine Benahmed, Boumediene Benyoucef, Rachid Bouhmidi and M'Hamed Khelif
Show affiliationsIn this paper we present electromagnetic (EM) analysis of the unloaded slotted-tube resonator (STR) with a circular cross section, using the finite element method (FEM) and method of moments (MoM) in two dimensions. This analysis allows the determination of the primary parameters: [L] and [C] matrices, optimization of the field homogeneity, and simulates the frequency response of S11 at the RF port of the designed STR. The optimum configuration is presented, taking into account the effect of the thickness of the STR and the effect of the RF shield. As an application, we present the design results of a MRI probe using the STR and operating at 500 MHz (proton imaging at 11.74 T). The resonator has −69.37 dB minimum reflection and an unloaded quality factor (Qo) > 500 at 500 MHz.
Issue 16 (21 August 2007)
Received 17 March 2007, in final form 6 June 2007
Published 1 August 2007
Nadia Benabdallah et al 2007 Phys. Med. Biol. 52 4943
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