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

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

Aarhus University

Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

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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 language	English
Publication date	2019
Number of pages	3
Publication status	Published - 2019
Event	ISMRM 27th Annual Meeting & Exhibition - Palais des congrès de Montréal, Montréal, Canada Duration: 11 May 2019 → 16 May 2019 Conference number: 27 http://www.ismrm.org/19m/

Conference

Conference	ISMRM 27th Annual Meeting & Exhibition
Number	27
Location	Palais des congrès de Montréal
Country/Territory	Canada
City	Montréal
Period	11/05/2019 → 16/05/2019
Internet address	http://www.ismrm.org/19m/

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@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 et al.
2019. Abstract from ISMRM 27th Annual Meeting & Exhibition, Montréal, Quebec, Canada.

Research output: Contribution to conference › Conference abstract for conference › Research › peer-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

N1 - Conference code: 27

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

T2 - ISMRM 27th Annual Meeting & Exhibition

Y2 - 11 May 2019 through 16 May 2019

ER -