title: On the applications of micror=-1 metamaterial lenses for magnetic resonance imaging.
abstract: In this work some possible applications of negative permeability magnetic metamaterial lenses for magnetic resonance imaging (MRI) are analyzed. It is shown that using magnetic metamaterials lenses it is possible to manipulate the spatial distribution of the radio-frequency (RF) field used in MR systems and, under some circumstances, improve the sensitivity of surface coils. Furthermore a collimation of the RF field, phenomenon that may find application in parallel imaging, is presented. MR images of real tissues are shown in order to prove the suitability of the theoretical analysis for practical applications.
authors.affiliation: Departamento de Electronica y Electromagnetismo, Universidad de Sevilla, Facultad de Fisica, Avda Reina Mercedes, 41012 Sevilla, Spain. freire@us.es
authors.forename: Manuel J
authors.initials: MJ
authors.lastname: Freire
authors.forename: Lukas
authors.initials: L
authors.lastname: Jelinek
authors.forename: Ricardo
authors.initials: R
authors.lastname: Marques
authors.forename: Mikhail
authors.initials: M
authors.lastname: Lapine
mesh_terms: D000465:Algorithms; D000842:Ankle / Q000033:anatomy & histology; D002477:Cells / Q000737:chemistry; D004574:Electromagnetic Fields; D004867:Equipment Design; D006801:Humans; D007089:Image Enhancement; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000295:instrumentation*; D008422:Materials Testing; D008962:Models, Theoretical; D019047:Phantoms, Imaging