Silent T1 mapping using the variable flip angle method with B1 correction

Emil Ljungberg; Tobias Wood; Ana Beatriz Solana; Shannon Kolind; Steven C R Williams; Florian Wiesinger; Gareth J Barker

doi:10.1002/mrm.28178

Silent T1 mapping using the variable flip angle method with B1 correction

Emil Ljungberg, Tobias Wood, Ana Beatriz Solana, Shannon Kolind, Steven C R Williams, Florian Wiesinger, Gareth J Barker

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

102 Downloads (Pure)

Abstract

Purpose: To compare the silent rotating ultrafast imaging sequence (RUFIS) to a traditional Cartesian spoiled gradient-echo (SPGR) acquisition scheme for variable flip angle (VFA) (Formula presented.) mapping. Methods: A two-point VFA measurement was performed using RUFIS and Cartesian SPGR in a quantitative phantom and healthy volunteers. To correct for (Formula presented.) errors, a novel silent magnetization prepared (Formula presented.) map acquisition (SIMBA) was developed, which combined with RUFIS VFA allows for a completely silent (Formula presented.) mapping protocol. Results: The silent protocol was found to have comparable repeatability but higher reproducibility in vivo compared to the standard SPGR protocol, and showed no increase in acoustic noise levels above background noise levels compared to a 33 dBA increase for the SPGR acquisition. Conclusions: VFA (Formula presented.) mapping using RUFIS is a feasible alternative to SPGR, achieving silent (Formula presented.) mapping with comparable acquisition time.

Original language	English
Pages (from-to)	813-824
Number of pages	12
Journal	Magnetic Resonance in Medicine
Volume	84
Issue number	2
Early online date	21 Jan 2020
DOIs	https://doi.org/10.1002/mrm.28178
Publication status	Published - 1 Aug 2020

Keywords

MRI
ZTE
quantitative
silent

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10.1002/mrm.28178

Ljungberg2020_Silent_T1mapping_PP
This is the pre-peer reviewed version of the following article: Ljungberg, E, Wood, T, Solana, AB, et al. Silent T1 mapping using the variable flip angle method with B1 correction. Magn Reson Med. 2020; 00: 1–12. which has been published in final form at https://doi.org/10.1002/mrm.28178. This article may be used for non- commercial purposes in accordance with Wiley Terms and Conditions for Use of Self- Archived Versions.
Submitted manuscript, 2.51 MBLicence: CC BY
Ljungberg2020-Silent_T1mapping
This is the peer reviewed version of the following article: Ljungberg E, Wood T, Solana AB, Kolind S, Williams SCR, Wiesinger F, et al. Silent T1 mapping using the variable flip angle method with B1 correction. Magn Reson Med. 2020;(December 2019):1–12., which has been published in final form at https://doi.org/10.1002/mrm.28178. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Accepted author manuscript, 1.1 MBLicence: CC BY

Cite this

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title = "Silent T1 mapping using the variable flip angle method with B1 correction",

abstract = "Purpose: To compare the silent rotating ultrafast imaging sequence (RUFIS) to a traditional Cartesian spoiled gradient-echo (SPGR) acquisition scheme for variable flip angle (VFA) (Formula presented.) mapping. Methods: A two-point VFA measurement was performed using RUFIS and Cartesian SPGR in a quantitative phantom and healthy volunteers. To correct for (Formula presented.) errors, a novel silent magnetization prepared (Formula presented.) map acquisition (SIMBA) was developed, which combined with RUFIS VFA allows for a completely silent (Formula presented.) mapping protocol. Results: The silent protocol was found to have comparable repeatability but higher reproducibility in vivo compared to the standard SPGR protocol, and showed no increase in acoustic noise levels above background noise levels compared to a 33 dBA increase for the SPGR acquisition. Conclusions: VFA (Formula presented.) mapping using RUFIS is a feasible alternative to SPGR, achieving silent (Formula presented.) mapping with comparable acquisition time.",

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author = "Emil Ljungberg and Tobias Wood and Solana, {Ana Beatriz} and Shannon Kolind and Williams, {Steven C R} and Florian Wiesinger and Barker, {Gareth J}",

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AU - Ljungberg, Emil

AU - Wood, Tobias

AU - Solana, Ana Beatriz

AU - Kolind, Shannon

AU - Williams, Steven C R

AU - Wiesinger, Florian

AU - Barker, Gareth J

PY - 2020/8/1

Y1 - 2020/8/1

N2 - Purpose: To compare the silent rotating ultrafast imaging sequence (RUFIS) to a traditional Cartesian spoiled gradient-echo (SPGR) acquisition scheme for variable flip angle (VFA) (Formula presented.) mapping. Methods: A two-point VFA measurement was performed using RUFIS and Cartesian SPGR in a quantitative phantom and healthy volunteers. To correct for (Formula presented.) errors, a novel silent magnetization prepared (Formula presented.) map acquisition (SIMBA) was developed, which combined with RUFIS VFA allows for a completely silent (Formula presented.) mapping protocol. Results: The silent protocol was found to have comparable repeatability but higher reproducibility in vivo compared to the standard SPGR protocol, and showed no increase in acoustic noise levels above background noise levels compared to a 33 dBA increase for the SPGR acquisition. Conclusions: VFA (Formula presented.) mapping using RUFIS is a feasible alternative to SPGR, achieving silent (Formula presented.) mapping with comparable acquisition time.

AB - Purpose: To compare the silent rotating ultrafast imaging sequence (RUFIS) to a traditional Cartesian spoiled gradient-echo (SPGR) acquisition scheme for variable flip angle (VFA) (Formula presented.) mapping. Methods: A two-point VFA measurement was performed using RUFIS and Cartesian SPGR in a quantitative phantom and healthy volunteers. To correct for (Formula presented.) errors, a novel silent magnetization prepared (Formula presented.) map acquisition (SIMBA) was developed, which combined with RUFIS VFA allows for a completely silent (Formula presented.) mapping protocol. Results: The silent protocol was found to have comparable repeatability but higher reproducibility in vivo compared to the standard SPGR protocol, and showed no increase in acoustic noise levels above background noise levels compared to a 33 dBA increase for the SPGR acquisition. Conclusions: VFA (Formula presented.) mapping using RUFIS is a feasible alternative to SPGR, achieving silent (Formula presented.) mapping with comparable acquisition time.

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JO - Magnetic Resonance in Medicine

JF - Magnetic Resonance in Medicine

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Silent T1 mapping using the variable flip angle method with B1 correction

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