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Retrospectively gated intracardiac 4D flow MRI using spiral trajectories
PURPOSE: To develop and evaluate retrospectively gated spiral readout four‐dimensional (4D) flow MRI for intracardiac flow analysis. METHODS: Retrospectively gated spiral 4D flow MRI was implemented on a 1.5‐tesla scanner. The spiral sequence was compared against conventional Cartesian 4D flow (SENS...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6618063/ https://www.ncbi.nlm.nih.gov/pubmed/25684309 http://dx.doi.org/10.1002/mrm.25612 |
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author | Petersson, Sven Sigfridsson, Andreas Dyverfeldt, Petter Carlhäll, Carl‐Johan Ebbers, Tino |
author_facet | Petersson, Sven Sigfridsson, Andreas Dyverfeldt, Petter Carlhäll, Carl‐Johan Ebbers, Tino |
author_sort | Petersson, Sven |
collection | PubMed |
description | PURPOSE: To develop and evaluate retrospectively gated spiral readout four‐dimensional (4D) flow MRI for intracardiac flow analysis. METHODS: Retrospectively gated spiral 4D flow MRI was implemented on a 1.5‐tesla scanner. The spiral sequence was compared against conventional Cartesian 4D flow (SENSE [sensitivity encoding] 2) in seven healthy volunteers and three patients (only spiral). In addition to comparing flow values, linear regression was used to assess internal consistency of aortic versus pulmonary net volume flows and left ventricular inflow versus outflow using quantitative pathlines analysis. RESULTS: Total scan time with spiral 4D flow was 44% ± 6% of the Cartesian counterpart (13 ± 3 vs. 31 ± 7 min). Aortic versus pulmonary flow correlated strongly for the spiral sequence (P < 0.05, slope = 1.03, R(2) = 0.88, N = 10), whereas the linear relationship for the Cartesian sequence was not significant (P = 0.06, N = 7). Pathlines analysis indicated good data quality for the spiral (P < 0.05, slope = 1.02, R(2) = 0.90, N = 10) and Cartesian sequence (P < 0.05, slope = 1.10, R(2) = 0.93, N = 7). Spiral and Cartesian peak flow rate (P < 0.05, slope = 0.96, R(2) = 0.72, N = 14), peak velocity (P < 0.05, slope = 1.00, R(2) = 0.81, N = 14), and pathlines flow components (P < 0.05, slope = 1.04, R(2) = 0.87, N = 28) correlated well. CONCLUSION: Retrospectively gated spiral 4D flow MRI permits more than two‐fold reduction in scan time compared to conventional Cartesian 4D flow MRI, while maintaining similar data quality. Magn Reson Med 75:196–206, 2016. © 2015 Wiley Periodicals, Inc. |
format | Online Article Text |
id | pubmed-6618063 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-66180632019-07-22 Retrospectively gated intracardiac 4D flow MRI using spiral trajectories Petersson, Sven Sigfridsson, Andreas Dyverfeldt, Petter Carlhäll, Carl‐Johan Ebbers, Tino Magn Reson Med Imaging Methodology—Full Papers PURPOSE: To develop and evaluate retrospectively gated spiral readout four‐dimensional (4D) flow MRI for intracardiac flow analysis. METHODS: Retrospectively gated spiral 4D flow MRI was implemented on a 1.5‐tesla scanner. The spiral sequence was compared against conventional Cartesian 4D flow (SENSE [sensitivity encoding] 2) in seven healthy volunteers and three patients (only spiral). In addition to comparing flow values, linear regression was used to assess internal consistency of aortic versus pulmonary net volume flows and left ventricular inflow versus outflow using quantitative pathlines analysis. RESULTS: Total scan time with spiral 4D flow was 44% ± 6% of the Cartesian counterpart (13 ± 3 vs. 31 ± 7 min). Aortic versus pulmonary flow correlated strongly for the spiral sequence (P < 0.05, slope = 1.03, R(2) = 0.88, N = 10), whereas the linear relationship for the Cartesian sequence was not significant (P = 0.06, N = 7). Pathlines analysis indicated good data quality for the spiral (P < 0.05, slope = 1.02, R(2) = 0.90, N = 10) and Cartesian sequence (P < 0.05, slope = 1.10, R(2) = 0.93, N = 7). Spiral and Cartesian peak flow rate (P < 0.05, slope = 0.96, R(2) = 0.72, N = 14), peak velocity (P < 0.05, slope = 1.00, R(2) = 0.81, N = 14), and pathlines flow components (P < 0.05, slope = 1.04, R(2) = 0.87, N = 28) correlated well. CONCLUSION: Retrospectively gated spiral 4D flow MRI permits more than two‐fold reduction in scan time compared to conventional Cartesian 4D flow MRI, while maintaining similar data quality. Magn Reson Med 75:196–206, 2016. © 2015 Wiley Periodicals, Inc. John Wiley and Sons Inc. 2015-02-13 2016-01 /pmc/articles/PMC6618063/ /pubmed/25684309 http://dx.doi.org/10.1002/mrm.25612 Text en © 2015 The Authors Magnetic Resonance in Medicine published by Wiley Periodicals, Inc. on behalf of International Society for Magnetic Resonance in Medicine This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Imaging Methodology—Full Papers Petersson, Sven Sigfridsson, Andreas Dyverfeldt, Petter Carlhäll, Carl‐Johan Ebbers, Tino Retrospectively gated intracardiac 4D flow MRI using spiral trajectories |
title | Retrospectively gated intracardiac 4D flow MRI using spiral trajectories |
title_full | Retrospectively gated intracardiac 4D flow MRI using spiral trajectories |
title_fullStr | Retrospectively gated intracardiac 4D flow MRI using spiral trajectories |
title_full_unstemmed | Retrospectively gated intracardiac 4D flow MRI using spiral trajectories |
title_short | Retrospectively gated intracardiac 4D flow MRI using spiral trajectories |
title_sort | retrospectively gated intracardiac 4d flow mri using spiral trajectories |
topic | Imaging Methodology—Full Papers |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6618063/ https://www.ncbi.nlm.nih.gov/pubmed/25684309 http://dx.doi.org/10.1002/mrm.25612 |
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