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Optimization of scan protocol for high temporal resolution magnetic resonance imaging of the liver under single breath-holding using compressed sensing and parallel imaging techniques in a 1.5-T magnetic resonance system
OBJECTIVE: To optimize the scan protocol for high temporal resolution magnetic resonance (MR) imaging of the liver under single breath-holding, using compressed sensing (CS) and parallel imaging (PI) techniques in a 1.5 T MR system. METHODS: 31 healthy volunteers who underwent fat-suppressed gradien...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The British Institute of Radiology.
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8611679/ https://www.ncbi.nlm.nih.gov/pubmed/34877452 http://dx.doi.org/10.1259/bjro.20210018 |
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author | Fukamatsu, Fumiaki Yamada, Akira Hayashihara, Hayato Kitou, Yoshihiro Fujinaga, Yasunari |
author_facet | Fukamatsu, Fumiaki Yamada, Akira Hayashihara, Hayato Kitou, Yoshihiro Fujinaga, Yasunari |
author_sort | Fukamatsu, Fumiaki |
collection | PubMed |
description | OBJECTIVE: To optimize the scan protocol for high temporal resolution magnetic resonance (MR) imaging of the liver under single breath-holding, using compressed sensing (CS) and parallel imaging (PI) techniques in a 1.5 T MR system. METHODS: 31 healthy volunteers who underwent fat-suppressed gradient-echo T (1) weighted imaging using a 1.5 T MR system were included. Image quality was evaluated on altering various imaging parameters in CS and PI so that the scan time was adjusted to 10 and 6 s within a single breath-holding. Normalized standard deviation (nSD = SD/mean value) and signal-to-noise ratio (SNR = mean value/SD) of liver signal intensity were measured. Visual scores for the outline of the liver and inferior right hepatic vein (IRHV) were evaluated using a 4-point scale and compared with that of the reference standard (20 s scan without CS). RESULTS: The nSD and SNR were not significantly different when the 10 s scan with CS factor 2.0 and the 6 s scan with CS factor 2.0 and 2.5 were compared to the 20 s scan. Overall visual score (mean score of the outline of the liver and IRHV) was significantly better (p < 0.05) with the 10 s scan with CS factor 2.0 compared to the other scan protocols. CONCLUSION: The 10 s scan with CS factor 2.0 should be recommended for high temporal resolution MR imaging of the liver using CS and PI in a 1.5 T MR system. ADVANCES IN KNOWLEDGE: This study conducts a novel MR imaging of the liver using CS and PI in a 1.5 T MR system. |
format | Online Article Text |
id | pubmed-8611679 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | The British Institute of Radiology. |
record_format | MEDLINE/PubMed |
spelling | pubmed-86116792021-12-06 Optimization of scan protocol for high temporal resolution magnetic resonance imaging of the liver under single breath-holding using compressed sensing and parallel imaging techniques in a 1.5-T magnetic resonance system Fukamatsu, Fumiaki Yamada, Akira Hayashihara, Hayato Kitou, Yoshihiro Fujinaga, Yasunari BJR Open Original Research OBJECTIVE: To optimize the scan protocol for high temporal resolution magnetic resonance (MR) imaging of the liver under single breath-holding, using compressed sensing (CS) and parallel imaging (PI) techniques in a 1.5 T MR system. METHODS: 31 healthy volunteers who underwent fat-suppressed gradient-echo T (1) weighted imaging using a 1.5 T MR system were included. Image quality was evaluated on altering various imaging parameters in CS and PI so that the scan time was adjusted to 10 and 6 s within a single breath-holding. Normalized standard deviation (nSD = SD/mean value) and signal-to-noise ratio (SNR = mean value/SD) of liver signal intensity were measured. Visual scores for the outline of the liver and inferior right hepatic vein (IRHV) were evaluated using a 4-point scale and compared with that of the reference standard (20 s scan without CS). RESULTS: The nSD and SNR were not significantly different when the 10 s scan with CS factor 2.0 and the 6 s scan with CS factor 2.0 and 2.5 were compared to the 20 s scan. Overall visual score (mean score of the outline of the liver and IRHV) was significantly better (p < 0.05) with the 10 s scan with CS factor 2.0 compared to the other scan protocols. CONCLUSION: The 10 s scan with CS factor 2.0 should be recommended for high temporal resolution MR imaging of the liver using CS and PI in a 1.5 T MR system. ADVANCES IN KNOWLEDGE: This study conducts a novel MR imaging of the liver using CS and PI in a 1.5 T MR system. The British Institute of Radiology. 2021-09-29 /pmc/articles/PMC8611679/ /pubmed/34877452 http://dx.doi.org/10.1259/bjro.20210018 Text en © 2021 The Authors. Published by the British Institute of Radiology https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Original Research Fukamatsu, Fumiaki Yamada, Akira Hayashihara, Hayato Kitou, Yoshihiro Fujinaga, Yasunari Optimization of scan protocol for high temporal resolution magnetic resonance imaging of the liver under single breath-holding using compressed sensing and parallel imaging techniques in a 1.5-T magnetic resonance system |
title | Optimization of scan protocol for high temporal resolution magnetic resonance imaging of the liver under single breath-holding using compressed sensing and parallel imaging techniques in a 1.5-T magnetic resonance system |
title_full | Optimization of scan protocol for high temporal resolution magnetic resonance imaging of the liver under single breath-holding using compressed sensing and parallel imaging techniques in a 1.5-T magnetic resonance system |
title_fullStr | Optimization of scan protocol for high temporal resolution magnetic resonance imaging of the liver under single breath-holding using compressed sensing and parallel imaging techniques in a 1.5-T magnetic resonance system |
title_full_unstemmed | Optimization of scan protocol for high temporal resolution magnetic resonance imaging of the liver under single breath-holding using compressed sensing and parallel imaging techniques in a 1.5-T magnetic resonance system |
title_short | Optimization of scan protocol for high temporal resolution magnetic resonance imaging of the liver under single breath-holding using compressed sensing and parallel imaging techniques in a 1.5-T magnetic resonance system |
title_sort | optimization of scan protocol for high temporal resolution magnetic resonance imaging of the liver under single breath-holding using compressed sensing and parallel imaging techniques in a 1.5-t magnetic resonance system |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8611679/ https://www.ncbi.nlm.nih.gov/pubmed/34877452 http://dx.doi.org/10.1259/bjro.20210018 |
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