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Quantification of turbulence and velocity in stenotic flow using spiral three‐dimensional phase‐contrast MRI
PURPOSE: Evaluate spiral three‐dimensional (3D) phase contrast MRI for the assessment of turbulence and velocity in stenotic flow. METHODS: A‐stack‐of‐spirals 3D phase contrast MRI sequence was evaluated in vitro against a conventional Cartesian sequence. Measurements were made in a flow phantom wit...
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/PMC6618270/ https://www.ncbi.nlm.nih.gov/pubmed/25846511 http://dx.doi.org/10.1002/mrm.25698 |
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author | Petersson, Sven Dyverfeldt, Petter Sigfridsson, Andreas Lantz, Jonas Carlhäll, Carl‐Johan Ebbers, Tino |
author_facet | Petersson, Sven Dyverfeldt, Petter Sigfridsson, Andreas Lantz, Jonas Carlhäll, Carl‐Johan Ebbers, Tino |
author_sort | Petersson, Sven |
collection | PubMed |
description | PURPOSE: Evaluate spiral three‐dimensional (3D) phase contrast MRI for the assessment of turbulence and velocity in stenotic flow. METHODS: A‐stack‐of‐spirals 3D phase contrast MRI sequence was evaluated in vitro against a conventional Cartesian sequence. Measurements were made in a flow phantom with a 75% stenosis. Both spiral and Cartesian imaging were performed using different scan orientations and flow rates. Volume flow rate, maximum velocity and turbulent kinetic energy (TKE) were computed for both methods. Moreover, the estimated TKE was compared with computational fluid dynamics (CFD) data. RESULTS: There was good agreement between the turbulent kinetic energy from the spiral, Cartesian and CFD data. Flow rate and maximum velocity from the spiral data agreed well with Cartesian data. As expected, the short echo time of the spiral sequence resulted in less prominent displacement artifacts compared with the Cartesian sequence. However, both spiral and Cartesian flow rate estimates were sensitive to displacement when the flow was oblique to the encoding directions. CONCLUSION: Spiral 3D phase contrast MRI appears favorable for the assessment of stenotic flow. The spiral sequence was more than three times faster and less sensitive to displacement artifacts when compared with a conventional Cartesian sequence. Magn Reson Med 75:1249–1255, 2016. © 2015 Wiley Periodicals, Inc. |
format | Online Article Text |
id | pubmed-6618270 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-66182702019-07-22 Quantification of turbulence and velocity in stenotic flow using spiral three‐dimensional phase‐contrast MRI Petersson, Sven Dyverfeldt, Petter Sigfridsson, Andreas Lantz, Jonas Carlhäll, Carl‐Johan Ebbers, Tino Magn Reson Med Imaging Methodology—Notes PURPOSE: Evaluate spiral three‐dimensional (3D) phase contrast MRI for the assessment of turbulence and velocity in stenotic flow. METHODS: A‐stack‐of‐spirals 3D phase contrast MRI sequence was evaluated in vitro against a conventional Cartesian sequence. Measurements were made in a flow phantom with a 75% stenosis. Both spiral and Cartesian imaging were performed using different scan orientations and flow rates. Volume flow rate, maximum velocity and turbulent kinetic energy (TKE) were computed for both methods. Moreover, the estimated TKE was compared with computational fluid dynamics (CFD) data. RESULTS: There was good agreement between the turbulent kinetic energy from the spiral, Cartesian and CFD data. Flow rate and maximum velocity from the spiral data agreed well with Cartesian data. As expected, the short echo time of the spiral sequence resulted in less prominent displacement artifacts compared with the Cartesian sequence. However, both spiral and Cartesian flow rate estimates were sensitive to displacement when the flow was oblique to the encoding directions. CONCLUSION: Spiral 3D phase contrast MRI appears favorable for the assessment of stenotic flow. The spiral sequence was more than three times faster and less sensitive to displacement artifacts when compared with a conventional Cartesian sequence. Magn Reson Med 75:1249–1255, 2016. © 2015 Wiley Periodicals, Inc. John Wiley and Sons Inc. 2015-04-04 2016-03 /pmc/articles/PMC6618270/ /pubmed/25846511 http://dx.doi.org/10.1002/mrm.25698 Text en © 2015 The Authors Magnetic Resonance in Medicine published by John Wiley & Sons Ltd 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—Notes Petersson, Sven Dyverfeldt, Petter Sigfridsson, Andreas Lantz, Jonas Carlhäll, Carl‐Johan Ebbers, Tino Quantification of turbulence and velocity in stenotic flow using spiral three‐dimensional phase‐contrast MRI |
title | Quantification of turbulence and velocity in stenotic flow using spiral three‐dimensional phase‐contrast MRI |
title_full | Quantification of turbulence and velocity in stenotic flow using spiral three‐dimensional phase‐contrast MRI |
title_fullStr | Quantification of turbulence and velocity in stenotic flow using spiral three‐dimensional phase‐contrast MRI |
title_full_unstemmed | Quantification of turbulence and velocity in stenotic flow using spiral three‐dimensional phase‐contrast MRI |
title_short | Quantification of turbulence and velocity in stenotic flow using spiral three‐dimensional phase‐contrast MRI |
title_sort | quantification of turbulence and velocity in stenotic flow using spiral three‐dimensional phase‐contrast mri |
topic | Imaging Methodology—Notes |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6618270/ https://www.ncbi.nlm.nih.gov/pubmed/25846511 http://dx.doi.org/10.1002/mrm.25698 |
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