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Topologically optimized magnetic lens for magnetic resonance applications

Wadhwa, Sagar; Jouda, Mazin ORCID iD icon; Deng, Yongbo; Nassar, Omar; Mager, Dario ORCID iD icon; Korvink, Jan G.


Improvements to the signal-to-noise ratio of magnetic resonance detection lead to a strong reduction in measurement time, yet as a sole optimization goal for resonator design, it would be an oversimplification of the problem at hand. Multiple constraints, for example for field homogeneity and sample shape, suggest the use of numerical optimization to obtain resonator designs that deliver the intended improvement. Here we consider the 2D Lenz lens to be a sufficiently broadband flux transforming interposer between the sample and a radiofrequency (RF) circuit and to be a flexible and easily manufacturable device family with which to mediate different design requirements. We report on a method to apply topology optimization to determine the optimal layout of a Lenz lens and demonstrate realizations for both low- (45 MHz) and high-frequency (500 MHz) nuclear magnetic resonance.

Verlagsausgabe §
DOI: 10.5445/IR/1000124517
Veröffentlicht am 14.10.2020
DOI: 10.5194/mr-1-225-2020
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 13.10.2020
Sprache Englisch
Identifikator ISSN: 2699-0016
KITopen-ID: 1000124517
HGF-Programm 43.70.01 (POF III, LK 01) VirtMat
Erschienen in Magnetic Resonance
Band 1
Heft 2
Seiten 225–236
Projektinformation Metacoils (DFG, DFG EIN, KO 1883/20-1)
TISuMR (EU, H2020, 737043)
DFG-Screening-ASIC (DFG, DFG EIN, KO 1883/29-1)
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 12.10.2020
Schlagwörter Topology Optimization, NMR, MRI, SNR, Lens
Nachgewiesen in Dimensions
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