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Abstract
In this work a comparison of two passive decoupling techniques for ultra-high field magnetic resonance imaging (MRI) is presented. An electromagnetic band-gap (EBG) structure and a single passive dipole are compared in terms of their capabilities to decouple two active dipole body array elements at 7 Tesla at an extremely short inter-element distance. Decoupling band as well as distribution of circularly polarized radiofrequency magnetic field inside a homogeneous phantom provided with these two techniques are compared.
Highlights
Ultra-high field (UHF) magnetic resonance imaging (MRI) is an extensively developed tool for medical diagnostics and preclinical biomedical research
An electromagnetic band-gap (EBG) structure and a single passive dipole are compared in terms of their capabilities to decouple two active dipole body array elements at 7 Tesla at an extremely short inter-element distance
The frequency dependent reflection coefficient of two passive dipoles equipped with the EBG structure is depicted in Fig. 2a by the dashed line, while their transmission coefficient is plotted in Fig. 2b by the dashed line as well
Summary
Ultra-high field (UHF) MRI (over 7 Tesla) is an extensively developed tool for medical diagnostics and preclinical biomedical research. In this work a comparison of two passive decoupling techniques for ultra-high field magnetic resonance imaging (MRI) is presented.
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