title: Optimal coil array design: the two-coil case.
abstract: The optimization problem for coil arrays is largely unsolved, even for the case of a two-coil system. This paper reports a systematic computer simulation to investigate the maximal achievable signal-to-noise ratio (SNR) with a two-coil receiver system where, using cancellation circuitry, mutual inductance is made zero. Both symmetrical and asymmetrical solutions with respect to two-coil geometry are considered. SNR is measured at a single point at a certain depth and also along a longitudinal or transverse line at the same depth. The conducting medium containing these regions of interest is assumed to be an infinite half space, an infinite cylinder or a finite sphere. The previous coil array design using a "magical" overlap only approximates the optimal solution for the infinite half space. For the infinite cylinder and the finite sphere, optimal solutions can be quite different from the "magical" overlap.
authors.affiliation: Department of Radiology, Weill Medical College of Cornell University, New York, NY 10022, USA.
authors.forename: Pascal
authors.initials: P
authors.lastname: Spincemaille
authors.forename: Ryan
authors.initials: R
authors.lastname: Brown
authors.forename: Yongxian
authors.initials: Y
authors.lastname: Qian
authors.forename: Yi
authors.initials: Y
authors.lastname: Wang
mesh_terms: D003198:Computer Simulation; D003287:Contrast Media; D004867:Equipment Design; D005682:Gadolinium; D006571:Heterocyclic Compounds; D007089:Image Enhancement; D008279:Magnetic Resonance Imaging / Q000295:instrumentation*; D009942:Organometallic Compounds; D019047:Phantoms, Imaging
chemical_list: D003287:Contrast Media; D006571:Heterocyclic Compounds; D009942:Organometallic Compounds; C062402:gadoteridol; D005682:Gadolinium