Proposal Of Cylindrical Rolled-Up Metamaterial Lenses For Magnetic Resonance Imaging Application And Preliminary Experimental Demonstration
2012 (English)In: Progress In Electromagnetics Research, ISSN 1559-8985, Vol. 124, 151-162 p.Article in journal (Refereed) Published
In this paper, we propose a cylindrical rolled-up negative permeability metamaterial (MM) lens for magnetic resonance imaging (MRI), and some analyses are given. The proposed cylindrical MM lens is fabricated by rolling a MM slab (constituted with capacitive-loaded copper split rings) into a tube that resembles a hollow ring. It can focus the field of a magnetic line source, which can increase the penetration depth and improve the sensitivity of a surface coil. The proposed cylindrical MM lens can also improve the discrimination of the signals coming from two independent sources. A clinical experiment is carried out in a General Electric Signa 1.5 T MRI system in order to verify the focusing ability of the proposed device.
Place, publisher, year, edition, pages
2012. Vol. 124, 151-162 p.
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-93409DOI: 10.2528/PIER11121402ISI: 000300644900010ScopusID: 2-s2.0-84856261769OAI: oai:DiVA.org:kth-93409DiVA: diva2:515781
QC 201204162012-04-162012-04-162013-11-19Bibliographically approved