title: Improved SNR of phased-array PERES coils via simulation study.
abstract: A computational comparison of signal-to-noise ratio (SNR) was performed between a conventional phased array of two circular-shaped coils and a petal resonator surface array. The quasi-static model and phased-array optimum SNR were combined to derive an SNR formula for each array. Analysis of mutual inductance between coil petals was carried out to compute the optimal coil separation and optimum number of petal coils. Mutual interaction between coil arrays was not included in the model because this does not drastically affect coil performance. Phased arrays of PERES coils show a 114% improvement in SNR over that of the simplest circular configuration.
authors.affiliation: Centro de Investigación en Imagenología e Instrumentación Médica, Universidad Autónoma Metropolitana Iztapalapa, Av. San Rafael Atlixco 186, México, DF, 09340, México. arog@xanum.uam.mx
authors.forename: Alfredo O
authors.initials: AO
authors.lastname: Rodríguez
authors.forename: Lucía
authors.initials: L
authors.lastname: Medina
mesh_terms: D003198:Computer Simulation; D004867:Equipment Design; D006801:Humans; D007089:Image Enhancement; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000295:instrumentation* / Q000379:methods; D015233:Models, Statistical; D019047:Phantoms, Imaging; D012984:Software