Ponente
Prof.
Manuel Freire
(Universidad de Sevilla)
Descripción
Metamaterials are artificial composites whose electromagnetic properties can be engineered to achieve any value of effective permittivity and/or permeability. Metamaterials can be designed with a negative permittivity/permeability to behave as a lens for the electric/ magnetic field. The ability of metamaterial lenses with negative permeability to increase the signal-to-noise ratio (SNR) in magnetic resonance imaging (MRI) has been investigated. Moreover, it has been also analyzed the ability of metamaterial slabs with zero/high permeability to reject/confine the RF magnetic field in MRI systems and thus to locally increase the SNR. Finally, the ability of metamaterial lenses to localize the field of view of MRI coils in an array and thus to reduce the noise correlation has been also investigated. This has application in parallel MRI to reduce the acquisition time of the image.
Autor primario
Prof.
Manuel Freire
(Universidad de Sevilla)
