| Electromagnetic analysis of the slotted-tube resonator with a circular cross section for MRI applications. | |
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MedLine Citation:
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PMID: 17671345 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In 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 S(11) 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 (Q(o)) > 500 at 500 MHz. |
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Authors:
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Nadia Benabdallah; Nasreddine Benahmed; Boumediene Benyoucef; Rachid Bouhmidi; M'Hamed Khelif |
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Publication Detail:
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Type: Evaluation Studies; Journal Article Date: 2007-08-01 |
Journal Detail:
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Title: Physics in medicine and biology Volume: 52 ISSN: 0031-9155 ISO Abbreviation: Phys Med Biol Publication Date: 2007 Aug |
Date Detail:
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Created Date: 2007-08-02 Completed Date: 2007-10-19 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0401220 Medline TA: Phys Med Biol Country: England |
Other Details:
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Languages: eng Pagination: 4943-52 Citation Subset: IM |
Affiliation:
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University of Tlemcen, PO Box 119, 13000 Tlemcen, Algeria. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Computer Simulation Computer-Aided Design* Electromagnetic Fields Equipment Design Equipment Failure Analysis Image Enhancement / instrumentation*, methods Magnetic Resonance Imaging / instrumentation* Magnetics / diagnostic use*, instrumentation* Models, Theoretical Radiation Dosage Radiometry Transducers* |
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