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
CountryCanada
CityMontréal
Period11/05/201916/05/2019
Internet address

Cite this

@conference{117c2d3296b941bf952cc3feba88d672,
title = "Calibrated Coil Combination for Fixed-Geometry, Low-Frequency Coils with Application to Hyperpolarized 13C Measurements",
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 phantomsbenefits in-vivo experiments. This one-time calibration allows for optimal combination of coil signals, which is also expected to improve parallel imaging performance.",
author = "S{\'a}nchez, {Juan Diego} and Hansen, {Rie Beck} and Baron, {Rafael Antonio} and Hansen, {Esben S. Szocska} and Johansen, {Daniel H{\o}jrup} and Vitaliy Zhurbenko and Christoffer Laustsen and Hanson, {Lars G.} and Ardenkj{\ae}r-Larsen, {Jan Henrik}",
year = "2019",
language = "English",
note = "ISMRM 27th Annual Meeting & Exhibition ; Conference date: 11-05-2019 Through 16-05-2019",
url = "http://www.ismrm.org/19m/",

}

Calibrated Coil Combination for Fixed-Geometry, Low-Frequency Coils with Application to Hyperpolarized 13C Measurements. / Sánchez , Juan Diego ; Hansen, Rie Beck; Baron, Rafael Antonio; Hansen, Esben S. Szocska ; Johansen, Daniel Højrup; Zhurbenko, Vitaliy; Laustsen, Christoffer ; Hanson, Lars G. ; Ardenkjær-Larsen, Jan Henrik.

2019. Abstract from ISMRM 27th Annual Meeting & Exhibition, Montréal, Canada.

Research output: Contribution to conferenceConference abstract for conferenceResearchpeer-review

TY - ABST

T1 - Calibrated Coil Combination for Fixed-Geometry, Low-Frequency Coils with Application to Hyperpolarized 13C Measurements

AU - Sánchez , Juan Diego

AU - Hansen, Rie Beck

AU - Baron, Rafael Antonio

AU - Hansen, Esben S. Szocska

AU - Johansen, Daniel Højrup

AU - Zhurbenko, Vitaliy

AU - Laustsen, Christoffer

AU - Hanson, Lars G.

AU - Ardenkjær-Larsen, Jan Henrik

PY - 2019

Y1 - 2019

N2 - 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 phantomsbenefits in-vivo experiments. This one-time calibration allows for optimal combination of coil signals, which is also expected to improve parallel imaging performance.

AB - 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 phantomsbenefits in-vivo experiments. This one-time calibration allows for optimal combination of coil signals, which is also expected to improve parallel imaging performance.

M3 - Conference abstract for conference

ER -

Sánchez JD, Hansen RB, Baron RA, Hansen ESS, Johansen DH, Zhurbenko V et al. Calibrated Coil Combination for Fixed-Geometry, Low-Frequency Coils with Application to Hyperpolarized 13C Measurements. 2019. Abstract from ISMRM 27th Annual Meeting & Exhibition, Montréal, Canada.