Calibrated Coil Combination for Fixed-Geometry, Low-Frequency Coils with Application to Hyperpolarized 13C Measurements

Juan Diego Sánchez , Rie Beck Hansen, Rafael Antonio Baron, Esben S. Szocska Hansen, Daniel Højrup Johansen, Vitaliy Zhurbenko, Christoffer Laustsen, Lars G. Hanson, Jan Henrik Ardenkjær-Larsen

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Abstract

We explore a new design approach for low frequency RF coils, where a transmit and receive array are built together in a totally rigid frame, and therefore their B and B distributions can be accurately mapped and used as prior information for SNR-optimal combination of signals from different coil elements. Using this principle, a coil is designed for C MRS of a pig at 3T (32.13 MHz). We show that at this frequency, the effect of sample loading is minimal, and the prior information obtained in phantoms
benefits in-vivo experiments. This one-time calibration allows for optimal combination of coil signals, which is also expected to improve parallel imaging performance.
Original languageEnglish
Publication date2019
Number of pages3
Publication statusPublished - 2019
EventISMRM 27th Annual Meeting & Exhibition - Palais des congrès de Montréal, Montréal, Canada
Duration: 11 May 201916 May 2019
http://www.ismrm.org/19m/

Conference

ConferenceISMRM 27th Annual Meeting & Exhibition
LocationPalais des congrès de Montréal
Country/TerritoryCanada
CityMontréal
Period11/05/201916/05/2019
Internet address

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