Line scan-based rapid magnetic resonance imaging of repetitive motion

Abstract Two-dimensional (2D) line scan-based dynamic magnetic resonance imaging (MRI) is examined as a means to capture the interior of objects under repetitive motion with high spatiotemporal resolutions. The method was demonstrated in a 9.4-T animal MRI scanner where line-by-line segmented k-spac...

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Autores principales:	Hankyeol Lee, Jeongtaek Lee, Jang-Yeon Park, Seung-Kyun Lee
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/70267dc8374d4d5b9b8fec787305324b
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spelling	oai:doaj.org-article:70267dc8374d4d5b9b8fec787305324b2021-12-02T13:30:51ZLine scan-based rapid magnetic resonance imaging of repetitive motion10.1038/s41598-021-83954-y2045-2322https://doaj.org/article/70267dc8374d4d5b9b8fec787305324b2021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-83954-yhttps://doaj.org/toc/2045-2322Abstract Two-dimensional (2D) line scan-based dynamic magnetic resonance imaging (MRI) is examined as a means to capture the interior of objects under repetitive motion with high spatiotemporal resolutions. The method was demonstrated in a 9.4-T animal MRI scanner where line-by-line segmented k-space acquisition enabled recording movements of an agarose phantom and quail eggs in different conditions—raw and cooked. A custom MR-compatible actuator which utilized the Lorentz force on its wire loops in the scanner’s main magnetic field effectively induced the required periodic movements of the objects inside the magnet. The line-by-line k-space segmentation was achieved by acquiring a single k-space line for every frame in a motion period before acquisition of another line with a different phase-encode gradient in the succeeding motion period. The reconstructed time-course images accurately represented the objects’ displacements with temporal resolutions up to 5.5 ms. The proposed method can drastically increase the temporal resolution of MRI for imaging rapid periodic motion of objects while preserving adequate spatial resolution for internal details when their movements are driven by a reliable motion-inducing mechanism.Hankyeol LeeJeongtaek LeeJang-Yeon ParkSeung-Kyun LeeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hankyeol Lee Jeongtaek Lee Jang-Yeon Park Seung-Kyun Lee Line scan-based rapid magnetic resonance imaging of repetitive motion
description	Abstract Two-dimensional (2D) line scan-based dynamic magnetic resonance imaging (MRI) is examined as a means to capture the interior of objects under repetitive motion with high spatiotemporal resolutions. The method was demonstrated in a 9.4-T animal MRI scanner where line-by-line segmented k-space acquisition enabled recording movements of an agarose phantom and quail eggs in different conditions—raw and cooked. A custom MR-compatible actuator which utilized the Lorentz force on its wire loops in the scanner’s main magnetic field effectively induced the required periodic movements of the objects inside the magnet. The line-by-line k-space segmentation was achieved by acquiring a single k-space line for every frame in a motion period before acquisition of another line with a different phase-encode gradient in the succeeding motion period. The reconstructed time-course images accurately represented the objects’ displacements with temporal resolutions up to 5.5 ms. The proposed method can drastically increase the temporal resolution of MRI for imaging rapid periodic motion of objects while preserving adequate spatial resolution for internal details when their movements are driven by a reliable motion-inducing mechanism.
format	article
author	Hankyeol Lee Jeongtaek Lee Jang-Yeon Park Seung-Kyun Lee
author_facet	Hankyeol Lee Jeongtaek Lee Jang-Yeon Park Seung-Kyun Lee
author_sort	Hankyeol Lee
title	Line scan-based rapid magnetic resonance imaging of repetitive motion
title_short	Line scan-based rapid magnetic resonance imaging of repetitive motion
title_full	Line scan-based rapid magnetic resonance imaging of repetitive motion
title_fullStr	Line scan-based rapid magnetic resonance imaging of repetitive motion
title_full_unstemmed	Line scan-based rapid magnetic resonance imaging of repetitive motion
title_sort	line scan-based rapid magnetic resonance imaging of repetitive motion
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/70267dc8374d4d5b9b8fec787305324b
work_keys_str_mv	AT hankyeollee linescanbasedrapidmagneticresonanceimagingofrepetitivemotion AT jeongtaeklee linescanbasedrapidmagneticresonanceimagingofrepetitivemotion AT jangyeonpark linescanbasedrapidmagneticresonanceimagingofrepetitivemotion AT seungkyunlee linescanbasedrapidmagneticresonanceimagingofrepetitivemotion
_version_	1718392921641713664

Line scan-based rapid magnetic resonance imaging of repetitive motion

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